fix errors

Signed-off-by: Мария Малыгина <m.malygina@yadro.com>
fix errors
2023-07-18 13:01:53 +03:00 · 2023-07-18 13:00:05 +03:00 · 2023-07-18 12:58:46 +03:00 · 2023-07-18 12:55:21 +03:00 · 2023-07-18 12:53:29 +03:00 · 2023-07-18 12:32:57 +03:00
70 changed files with 1900 additions and 3454 deletions
--- a/.forgejo/workflows/dco.yml
+++ b/.forgejo/workflows/dco.yml
@ -1,21 +0,0 @@
-name: DCO action
-on: [pull_request]
-
-jobs:
-  dco:
-    name: DCO
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-
-      - name: Setup Go
-        uses: actions/setup-go@v3
-        with:
-          go-version: '1.22'
-
-      - name: Run commit format checker
-        uses: https://git.frostfs.info/TrueCloudLab/dco-go@v2
-        with:
-          from: 'origin/${{ github.event.pull_request.base.ref }}'
--- a/.forgejo/workflows/tests.yml
+++ b/.forgejo/workflows/tests.yml
@ -1,56 +0,0 @@
-name: Tests and linters
-on: [pull_request]
-
-jobs:
-  lint:
-    name: Lint
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Set up Go
-        uses: actions/setup-go@v3
-        with:
-          go-version: '1.23'
-          cache: true
-
-      - name: Install linters
-        run: make lint-install
-
-      - name: Run linters
-        run: make lint
-
-  tests:
-    name: Tests
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        go_versions: [ '1.22', '1.23' ]
-      fail-fast: false
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Set up Go
-        uses: actions/setup-go@v3
-        with:
-          go-version: '${{ matrix.go_versions }}'
-          cache: true
-
-      - name: Run tests
-        run: make test
-
-  tests-race:
-    name: Tests with -race
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Set up Go
-        uses: actions/setup-go@v3
-        with:
-          go-version: '1.22'
-          cache: true
-
-      - name: Run tests
-        run: go test ./... -count=1 -race
-
--- a/.forgejo/CODEOWNERS
+++ b/.forgejo/CODEOWNERS
--- a/.forgejo/ISSUE_TEMPLATE/bug_report.md
+++ b/.forgejo/ISSUE_TEMPLATE/bug_report.md
--- a/.forgejo/ISSUE_TEMPLATE/config.yml
+++ b/.forgejo/ISSUE_TEMPLATE/config.yml
--- a/.forgejo/ISSUE_TEMPLATE/feature_request.md
+++ b/.forgejo/ISSUE_TEMPLATE/feature_request.md
--- a/.forgejo/logo.svg
+++ b/.forgejo/logo.svg
--- a/.github/workflows/dco.yml
+++ b/.github/workflows/dco.yml
@ -0,0 +1,21 @@
+name: DCO check
+
+on:
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  commits_check_job:
+    runs-on: ubuntu-latest
+    name: Commits Check
+    steps:
+      - name: Get PR Commits
+        id: 'get-pr-commits'
+        uses: tim-actions/get-pr-commits@master
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+      - name: DCO Check
+        uses: tim-actions/dco@master
+        with:
+          commits: ${{ steps.get-pr-commits.outputs.commits }}
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@ -0,0 +1,34 @@
+name: Tests
+
+on:
+  pull_request:
+    branches:
+      - master
+    types: [opened, synchronize]
+    paths-ignore:
+      - '**/*.md'
+  workflow_dispatch:
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v2
+
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v2
+        with:
+          version: latest
+          args: --timeout=2m
+
+  tests:
+    name: Tests
+    runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+        go_versions: [ '1.17', '1.18', '1.19' ]
+      fail-fast: false
+    steps:
+    - uses: actions/checkout@v3
--- a/.gitignore
+++ b/.gitignore
@ -1,6 +1,3 @@
 k6
 *.bolt
 presets
-bin
-# Preset script artifacts.
-__pycache__
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@ -3,8 +3,8 @@
 First, thank you for contributing! We love and encourage pull requests from
 everyone. Please follow the guidelines:

- Check the open [issues](https://git.frostfs.info/TrueCloudLab/xk6-frostfs/issues) and
-  [pull requests](https://git.frostfs.info/TrueCloudLab/xk6-frostfs/pulls) for existing
+- Check the open [issues](https://github.com/TrueCloudLab/xk6-frostfs/issues) and
+  [pull requests](https://github.com/TrueCloudLab/xk6-frostfs/pulls) for existing
  discussions.

 - Open an issue first, to discuss a new feature or enhancement.
@ -28,18 +28,18 @@ send a pull request. We encourage pull requests to discuss code changes. Here
 are the steps in details:

 ### Set up your GitHub Repository
-Fork [xk6-frostfs upstream](https://git.frostfs.info/TrueCloudLab/xk6-frostfs/fork) source
+Fork [xk6-frostfs upstream](https://github.com/TrueCloudLab/xk6-frostfs/fork) source
 repository to your own personal repository. Copy the URL of your fork (you will
 need it for the `git clone` command below).

 ```sh
-$ git clone https://git.frostfs.info/TrueCloudLab/xk6-frostfs
+$ git clone https://github.com/TrueCloudLab/xk6-frostfs
 ```

 ### Set up git remote as ``upstream``
 ```sh
 $ cd xk6-frostfs
-$ git remote add upstream https://git.frostfs.info/TrueCloudLab/xk6-frostfs
+$ git remote add upstream https://github.com/TrueCloudLab/xk6-frostfs
 $ git fetch upstream
 $ git merge upstream/master
 ...
--- a/114
+++ b/114
@ -1,114 +0,0 @@
-#!/usr/bin/make -f
-
-# Common variables
-REPO ?= $(shell go list -m)
-VERSION ?= $(shell git describe --tags --dirty --match "v*" --always --abbrev=8 2>/dev/null || cat VERSION 2>/dev/null || echo "develop")
-GO_VERSION ?= 1.22
-LINT_VERSION ?= 1.60.3
-TRUECLOUDLAB_LINT_VERSION ?= 0.0.7
-BINDIR = bin
-
-OUTPUT_LINT_DIR ?= $(abspath $(BINDIR))/linters
-LINT_DIR = $(OUTPUT_LINT_DIR)/golangci-lint-$(LINT_VERSION)-v$(TRUECLOUDLAB_LINT_VERSION)
-TMP_DIR := .cache
-
-# Binaries to build
-CMDS = $(addprefix frostfs-, $(notdir $(wildcard cmd/*)))
-BINS = $(addprefix $(BINDIR)/, $(CMDS))
-
-.PHONY: all $(BINS) $(BINDIR) dep docker/ test cover format lint docker/lint pre-commit unpre-commit version clean
-
-# Make all binaries
-all: $(BINS)
-
-$(BINS): $(BINDIR) dep
-	@echo "⇒ Build $@"
-	CGO_ENABLED=0 \
-	go build -v -trimpath \
-	-ldflags "-X $(REPO)/internal/version.Version=$(VERSION)" \
-	-o $@ ./cmd/$(subst frostfs-,,$(notdir $@))
-
-$(BINDIR):
-	@echo "⇒ Ensure dir: $@"
-	@mkdir -p $@
-
-# Pull go dependencies
-dep:
-	@printf "⇒ Download requirements: "
-	@CGO_ENABLED=0 \
-	go mod download && echo OK
-	@printf "⇒ Tidy requirements: "
-	@CGO_ENABLED=0 \
-	go mod tidy -v && echo OK
-
-# Run `make %` in Golang container, for more information run `make help.docker/%`
-docker/%:
-	$(if $(filter $*,all $(BINS)), \
-		@echo "=> Running 'make $*' in clean Docker environment" && \
-		docker run --rm -t \
-		  -v `pwd`:/src \
-		  -w /src \
-		  -u `stat -c "%u:%g" .` \
-		  --env HOME=/src \
-		  golang:$(GO_VERSION) make $*,\
-	  	@echo "supported docker targets: all $(BINS) lint")
-
-# Run tests
-test:
-	@go test ./... -cover
-
-# Run tests with race detection and produce coverage output
-cover:
-	@go test -v -race ./... -coverprofile=coverage.txt -covermode=atomic
-	@go tool cover -html=coverage.txt -o coverage.html
-
-# Reformat code
-format:
-	@echo "⇒ Processing gofmt check"
-	@gofmt -s -w ./
-
-# Run linters
-lint:
-	@if [ ! -d "$(LINT_DIR)" ]; then \
-		make lint-install; \
-	fi
-	$(LINT_DIR)/golangci-lint run --timeout=5m
-
-# Install linters
-lint-install:
-	@rm -rf $(OUTPUT_LINT_DIR)
-	@mkdir -p $(OUTPUT_LINT_DIR)
-	@mkdir -p $(TMP_DIR)
-	@rm -rf $(TMP_DIR)/linters
-	@git -c advice.detachedHead=false clone --branch v$(TRUECLOUDLAB_LINT_VERSION) https://git.frostfs.info/TrueCloudLab/linters.git $(TMP_DIR)/linters
-	@@make -C $(TMP_DIR)/linters lib CGO_ENABLED=1 OUT_DIR=$(OUTPUT_LINT_DIR)
-	@rm -rf $(TMP_DIR)/linters
-	@rmdir $(TMP_DIR) 2>/dev/null || true
-	@CGO_ENABLED=1 GOBIN=$(LINT_DIR) go install -trimpath github.com/golangci/golangci-lint/cmd/golangci-lint@v$(LINT_VERSION)
-
-# Run linters in Docker
-docker/lint:
-	docker run --rm -it \
-	-v `pwd`:/src \
-	-u `stat -c "%u:%g" .` \
-	--env HOME=/src \
-	golangci/golangci-lint:v$(LINT_VERSION) bash -c 'cd /src/ && make lint'
-
-# Activate pre-commit hooks
-pre-commit:
-	pre-commit install -t pre-commit -t commit-msg
-
-# Deactivate pre-commit hooks
-unpre-commit:
-	pre-commit uninstall -t pre-commit -t commit-msg
-
-# Show current version
-version:
-	@echo $(VERSION)
-
-# Clean up files
-clean:
-	rm -rf .cache
-	rm -rf $(BINDIR)
-
-include help.mk
--- a/README.md
+++ b/README.md
@ -1,5 +1,5 @@
 <p align="center">
-<img src="./.forgejo/logo.svg" width="500px" alt="FrostFS logo">
+<img src="./.github/logo.svg" width="500px" alt="FrostFS logo">
 </p>
 <p align="center">
  <a href="https://go.k6.io/k6">k6</a> extension to test and benchmark FrostFS related protocols.
@ -48,11 +48,10 @@ Create native client with `connect` method. Arguments:
 - dial timeout in seconds (0 for the default value)
 - stream timeout in seconds (0 for the default value)
 - generate object header on the client side (for big object - split locally too)
- max size for generated object header on the client side (for big object - the size that the object is splitted into)

 ```js
 import native from 'k6/x/frostfs/native';
-const frostfs_cli = native.connect("s01.frostfs.devenv:8080", "", 0, 0, false, 0)
+const frostfs_cli = native.connect("s01.frostfs.devenv:8080", "", 0, 0, false)
 ```

 ### Methods
@ -75,13 +74,12 @@ const frostfs_cli = native.connect("s01.frostfs.devenv:8080", "", 0, 0, false, 0

 Create a local client with `connect` method. Arguments:
 - local path to frostfs storage node configuration file
- local path to frostfs storage node configuration directory
 - hex encoded private key (empty value produces random key)
 - whether to use the debug logger (warning: very verbose)

 ```js
 import local from 'k6/x/frostfs/local';
-const local_client = local.connect("/path/to/config.yaml", "/path/to/config/dir", "", false)
+const local_client = local.connect("/path/to/config.yaml", "", false)
 ```

 ### Methods
@ -125,7 +123,6 @@ const s3_cli = s3.connect("https://s3.frostfs.devenv:8080", {'no_verify_ssl': 't

 Create local s3 client with `connect` method. Arguments:
 - local path to frostfs storage node configuration file
- local path to frostfs storage node configuration directory
 - parameter map with the following options:
  * `hex_key`: private key to use as a hexadecimal string. A random one is created if none is provided.
  * `node_position`: position of this node in the node array if loading multiple nodes independently (default: 0).
@ -138,7 +135,7 @@ Create local s3 client with `connect` method. Arguments:
 import local from 'k6/x/frostfs/local';
 const params = {'node_position': 1, 'node_count': 3}
 const bucketMapping = {'mytestbucket': 'GBQDDUM1hdodXmiRHV57EUkFWJzuntsG8BG15wFSwam6'}
-const local_client = local.connect("/path/to/config.yaml", "/path/to/config/dir", params, bucketMapping)
+const local_client = local.connect("/path/to/config.yaml", params, bucketMapping)
 ```

 ### Methods
@ -151,41 +148,6 @@ const local_client = local.connect("/path/to/config.yaml", "/path/to/config/dir"

 See native protocol and s3 test suite examples in [examples](./examples) dir.

-# Command line utils
-
-To build all command line utils just run:
-
-```shell
-$ make
-```
-
-All binaries will be in `bin` directory.
-
-## Export registry db
-
-You can export registry bolt db to json file, that can be used as pregen for scenarios (see [docs](./scenarios/run_scenarios.md)).
-To do this use `frostfs-xk6-registry-exporter`, available flags can be seen in help:
-
-```shell
-$ ./bin/frostfs-xk6-registry-exporter -h
-Registry exporter for xk6
-
-Usage:
-registry-exporter [flags]
-
-Examples:
-registry-exporter registry.bolt
-registry-exporter --status created --out out.json registry.bolt
-
-Flags:
--age int         Object age
--format string   Output format (default "json")
-h, --help            help for registry-exporter
--out string      Path to output file (default "dumped-registry.json")
--status string   Object status (default "created")
-v, --version         version for registry-exporter
-```
-
 # License

 - [GNU General Public License v3.0](LICENSE)
--- a/cmd/xk6-registry-exporter/main.go
+++ b/cmd/xk6-registry-exporter/main.go
@ -1,18 +0,0 @@
-package main
-
-import (
-	"context"
-	"os"
-	"os/signal"
-	"syscall"
-)
-
-func main() {
-	ctx, _ := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)
-
-	if cmd, err := rootCmd.ExecuteContextC(ctx); err != nil {
-		cmd.PrintErrln("Error:", err.Error())
-		cmd.PrintErrf("Run '%v --help' for usage.\n", cmd.CommandPath())
-		os.Exit(1)
-	}
-}
--- a/cmd/xk6-registry-exporter/root.go
+++ b/cmd/xk6-registry-exporter/root.go
@ -1,89 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"runtime"
-
-	"git.frostfs.info/TrueCloudLab/xk6-frostfs/internal/registry"
-	"git.frostfs.info/TrueCloudLab/xk6-frostfs/internal/version"
-	"github.com/spf13/cobra"
-)
-
-var rootCmd = &cobra.Command{
-	Use:     "registry-exporter",
-	Version: version.Version,
-	Short:   "Registry exporter",
-	Long:    "Registry exporter for xk6",
-	Example: `registry-exporter registry.bolt
-registry-exporter --status created --out out.json registry.bolt`,
-	SilenceErrors: true,
-	SilenceUsage:  true,
-	RunE:          rootCmdRun,
-}
-
-const (
-	outFlag    = "out"
-	formatFlag = "format"
-	statusFlag = "status"
-	ageFlag    = "age"
-)
-
-const (
-	defaultOutPath = "dumped-registry.json"
-
-	jsonFormat = "json"
-
-	createdStatus = "created"
-)
-
-func init() {
-	rootCmd.Flags().String(outFlag, defaultOutPath, "Path to output file")
-	rootCmd.Flags().String(formatFlag, jsonFormat, "Output format")
-	rootCmd.Flags().String(statusFlag, createdStatus, "Object status")
-	rootCmd.Flags().Int(ageFlag, 0, "Object age")
-
-	cobra.AddTemplateFunc("runtimeVersion", runtime.Version)
-	rootCmd.SetVersionTemplate(`FrostFS xk6 Registry Exporter
-{{printf "Version: %s" .Version }}
-GoVersion: {{ runtimeVersion }}
-`)
-}
-
-func rootCmdRun(cmd *cobra.Command, args []string) error {
-	if len(args) != 1 {
-		return fmt.Errorf("expected exacly one non-flag argumet: path to the registry, got: %s", args)
-	}
-
-	format, err := cmd.Flags().GetString(formatFlag)
-	if err != nil {
-		return fmt.Errorf("get '%s' flag: %w", formatFlag, err)
-	}
-	if format != jsonFormat {
-		return fmt.Errorf("unknown format '%s', only '%s' is supported", format, jsonFormat)
-	}
-
-	out, err := cmd.Flags().GetString(outFlag)
-	if err != nil {
-		return fmt.Errorf("get '%s' flag: %w", outFlag, err)
-	}
-
-	status, err := cmd.Flags().GetString(statusFlag)
-	if err != nil {
-		return fmt.Errorf("get '%s' flag: %w", statusFlag, err)
-	}
-
-	age, err := cmd.Flags().GetInt(ageFlag)
-	if err != nil {
-		return fmt.Errorf("get '%s' flag: %w", ageFlag, err)
-	}
-
-	objRegistry := registry.NewObjRegistry(cmd.Context(), args[0])
-	objSelector := registry.NewObjSelector(objRegistry, 0, registry.SelectorAwaiting, &registry.ObjFilter{
-		Status: status,
-		Age:    age,
-	})
-	objExporter := registry.NewObjExporter(objSelector)
-
-	cmd.Println("Writing result file:", out)
-	return objExporter.ExportJSONPreGen(out)
-}
--- a/cmd/xk6-registry/importer/import.go
+++ b/cmd/xk6-registry/importer/import.go
@ -1,55 +0,0 @@
-package importer
-
-import (
-	"encoding/json"
-	"os"
-
-	"git.frostfs.info/TrueCloudLab/xk6-frostfs/internal/registry"
-)
-
-type PreGenObj struct {
-	Bucket    string `json:"bucket"`
-	Object    string `json:"object"`
-	Container string `json:"container"`
-}
-
-type PreGenerateInfo struct {
-	Buckets    []string    `json:"buckets"`
-	Containers []string    `json:"containers"`
-	Objects    []PreGenObj `json:"objects"`
-	ObjSize    string      `json:"obj_size"`
-}
-
-// ImportJSONPreGen writes objects from pregenerated JSON file
-// to the registry.
-// Note that ImportJSONPreGen does not check if object already
-// exists in the registry so in case of re-entry the registry
-// will have two entities representing the same object.
-func ImportJSONPreGen(o *registry.ObjRegistry, filename string) error {
-	f, err := os.ReadFile(filename)
-	if err != nil {
-		return err
-	}
-
-	var pregenInfo PreGenerateInfo
-	err = json.Unmarshal(f, &pregenInfo)
-	if err != nil {
-		return err
-	}
-
-	// AddObject uses DB.Batch to combine concurrent Batch calls
-	// into a single Bolt transaction. DB.Batch is limited by
-	// DB.MaxBatchDelay which may affect perfomance.
-	for _, obj := range pregenInfo.Objects {
-		if obj.Bucket != "" {
-			err = o.AddObject("", "", obj.Bucket, obj.Object, "")
-		} else {
-			err = o.AddObject(obj.Container, obj.Object, "", "", "")
-		}
-		if err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
--- a/cmd/xk6-registry/importer/root.go
+++ b/cmd/xk6-registry/importer/root.go
@ -1,27 +0,0 @@
-package importer
-
-import (
-	"git.frostfs.info/TrueCloudLab/xk6-frostfs/internal/registry"
-	"github.com/spf13/cobra"
-)
-
-// Cmd represents the import command.
-var Cmd = &cobra.Command{
-	Use:   "import",
-	Short: "Import objects into registry",
-	Long:  "Import objects into registry from pregenerated files",
-	Example: `xk6-registry import registry.bolt preset.json
-xk6-registry import --status created registry.bolt preset.json another_preset.json`,
-	RunE: runCmd,
-	Args: cobra.MinimumNArgs(2),
-}
-
-func runCmd(cmd *cobra.Command, args []string) error {
-	objRegistry := registry.NewObjRegistry(cmd.Context(), args[0])
-	for i := 1; i < len(args); i++ {
-		if err := ImportJSONPreGen(objRegistry, args[i]); err != nil {
-			return err
-		}
-	}
-	return nil
-}
--- a/cmd/xk6-registry/main.go
+++ b/cmd/xk6-registry/main.go
@ -1,18 +0,0 @@
-package main
-
-import (
-	"context"
-	"os"
-	"os/signal"
-	"syscall"
-)
-
-func main() {
-	ctx, _ := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)
-
-	if cmd, err := rootCmd.ExecuteContextC(ctx); err != nil {
-		cmd.PrintErrln("Error:", err.Error())
-		cmd.PrintErrf("Run '%v --help' for usage.\n", cmd.CommandPath())
-		os.Exit(1)
-	}
-}
--- a/cmd/xk6-registry/root.go
+++ b/cmd/xk6-registry/root.go
@ -1,33 +0,0 @@
-package main
-
-import (
-	"runtime"
-
-	"git.frostfs.info/TrueCloudLab/xk6-frostfs/cmd/xk6-registry/importer"
-	"git.frostfs.info/TrueCloudLab/xk6-frostfs/internal/version"
-	"github.com/spf13/cobra"
-)
-
-var rootCmd = &cobra.Command{
-	Use:     "xk6-registry",
-	Version: version.Version,
-	Short:   "Command Line Tool to work with Registry",
-	Long: `Registry provides tools to work with object registry for xk6.
-It contains command for importing objects in registry from preset`,
-	SilenceErrors: true,
-	SilenceUsage:  true,
-	Run:           rootCmdRun,
-}
-
-func init() {
-	cobra.AddTemplateFunc("runtimeVersion", runtime.Version)
-	rootCmd.SetVersionTemplate(`FrostFS xk6-registry
-{{printf "Version: %s" .Version }}
-GoVersion: {{ runtimeVersion }}
-`)
-	rootCmd.AddCommand(importer.Cmd)
-}
-
-func rootCmdRun(cmd *cobra.Command, _ []string) {
-	_ = cmd.Usage()
-}
--- a/examples/local.js
+++ b/examples/local.js
@ -2,7 +2,7 @@ import local from 'k6/x/frostfs/local';
 import { uuidv4 } from '../scenarios/libs/k6-utils-1.4.0.js';

 const payload = open('../go.sum', 'b');
-const local_cli = local.connect("/path/to/config.yaml", "/path/to/config/dir", "", false)
+const local_cli = local.connect("/path/to/config.yaml", "", false)

 export const options = {
    stages: [
--- a/examples/native.js
+++ b/examples/native.js
@ -3,11 +3,11 @@ import { fail } from "k6";
 import { uuidv4 } from '../scenarios/libs/k6-utils-1.4.0.js';

 const payload = open('../go.sum', 'b');
-const frostfs_cli = native.connect("s01.frostfs.devenv:8080", "1dd37fba80fec4e6a6f13fd708d8dcb3b29def768017052f6c930fa1c5d90bbb", 0, 0, false, 0)
+const frostfs_cli = native.connect("s01.frostfs.devenv:8080", "1dd37fba80fec4e6a6f13fd708d8dcb3b29def768017052f6c930fa1c5d90bbb", 0, 0, false)

 export const options = {
    stages: [
-        { duration: '30s', target: 10 },
+        {duration: '30s', target: 10},
    ],
 };

@ -24,7 +24,7 @@ export function setup() {
        fail(res.error)
    }
    console.info("created container", res.container_id)
-    return { container_id: res.container_id }
+    return {container_id: res.container_id}
 }

 export default function (data) {
--- a/examples/native_onsite.js
+++ b/examples/native_onsite.js
@ -3,7 +3,7 @@ import { uuidv4 } from '../scenarios/libs/k6-utils-1.4.0.js';

 const payload = open('../go.sum', 'b');
 const container = "AjSxSNNXbJUDPqqKYm1VbFVDGCakbpUNH8aGjPmGAH3B"
-const frostfs_cli = native.connect("s01.frostfs.devenv:8080", "", 0, 0, false, 0)
+const frostfs_cli = native.connect("s01.frostfs.devenv:8080", "", 0, 0, false)
 const frostfs_obj = frostfs_cli.onsite(container, payload)

 export const options = {
@ -14,11 +14,11 @@ export const options = {

 export default function () {
    let headers = {
-        'unique_header': uuidv4()
+       'unique_header': uuidv4()
    }
    let resp = frostfs_obj.put(headers)
    if (resp.success) {
-        frostfs_cli.get(container, resp.object_id)
+       frostfs_cli.get(container, resp.object_id)
    } else {
        console.log(resp.error)
    }
--- a/examples/s3local.js
+++ b/examples/s3local.js
@ -3,7 +3,7 @@ import { uuidv4 } from '../scenarios/libs/k6-utils-1.4.0.js';

 const bucket = "testbucket"
 const payload = open('../go.sum', 'b');
-const s3local_cli = s3local.connect("path/to/storage/config.yml", "path/to/storage/config/dir", {}, {
+const s3local_cli = s3local.connect("path/to/storage/config.yml", {}, {
    'testbucket': 'GBQDDUM1hdodXmiRHV57EUkFWJzuntsG8BG15wFSwam6',
 });

--- a/go.mod
+++ b/go.mod
@ -1,11 +1,11 @@
 module git.frostfs.info/TrueCloudLab/xk6-frostfs

-go 1.22
+go 1.19

 require (
-	git.frostfs.info/TrueCloudLab/frostfs-node v0.38.3-0.20240502170333-ec2873caa7c6
-	git.frostfs.info/TrueCloudLab/frostfs-s3-gw v0.29.0-rc.1.0.20240422122918-034396d554ec
-	git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20240502080121-12ddefe07877
+	git.frostfs.info/TrueCloudLab/frostfs-node v0.22.2-0.20230704155826-b520a3049e6f
+	git.frostfs.info/TrueCloudLab/frostfs-s3-gw v0.27.0-rc.2
+	git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20230705125206-769f6eec0565
 	git.frostfs.info/TrueCloudLab/tzhash v1.8.0
 	github.com/aws/aws-sdk-go-v2 v1.19.0
 	github.com/aws/aws-sdk-go-v2/config v1.18.28
@ -13,28 +13,24 @@ require (
 	github.com/aws/aws-sdk-go-v2/service/s3 v1.37.0
 	github.com/dop251/goja v0.0.0-20230626124041-ba8a63e79201
 	github.com/go-loremipsum/loremipsum v1.1.3
-	github.com/google/uuid v1.6.0
+	github.com/google/uuid v1.3.0
 	github.com/joho/godotenv v1.5.1
-	github.com/nspcc-dev/neo-go v0.105.1
-	github.com/panjf2000/ants/v2 v2.9.0
+	github.com/nspcc-dev/neo-go v0.101.2
+	github.com/panjf2000/ants/v2 v2.8.0
 	github.com/sirupsen/logrus v1.9.3
-	github.com/spf13/cobra v1.8.0
 	github.com/stretchr/testify v1.8.4
-	go.etcd.io/bbolt v1.3.8
-	go.k6.io/k6 v0.45.1
-	go.uber.org/zap v1.26.0
-	golang.org/x/sys v0.18.0
+	go.etcd.io/bbolt v1.3.7
+	go.k6.io/k6 v0.45.0
+	go.uber.org/zap v1.24.0
+	golang.org/x/sys v0.10.0
 )

 require (
-	git.frostfs.info/TrueCloudLab/frostfs-api-go/v2 v2.16.1-0.20240427200446-67c6f305b21f // indirect
-	git.frostfs.info/TrueCloudLab/frostfs-contract v0.19.3-0.20240409115729-6eb492025bdd // indirect
+	git.frostfs.info/TrueCloudLab/frostfs-api-go/v2 v2.15.1-0.20230602142716-68021b910acb // indirect
 	git.frostfs.info/TrueCloudLab/frostfs-crypto v0.6.0 // indirect
-	git.frostfs.info/TrueCloudLab/frostfs-observability v0.0.0-20231101111734-b3ad3335ff65 // indirect
+	git.frostfs.info/TrueCloudLab/frostfs-observability v0.0.0-20230531082742-c97d21411eb6 // indirect
 	git.frostfs.info/TrueCloudLab/hrw v1.2.1 // indirect
-	git.frostfs.info/TrueCloudLab/policy-engine v0.0.0-20240416071728-04a79f57ef1f // indirect
 	git.frostfs.info/TrueCloudLab/rfc6979 v0.4.0 // indirect
-	git.frostfs.info/TrueCloudLab/zapjournald v0.0.0-20240124114243-cb2e66427d02 // indirect
 	github.com/antlr4-go/antlr/v4 v4.13.0 // indirect
 	github.com/aws/aws-sdk-go v1.44.296 // indirect
 	github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.4.10 // indirect
@ -56,77 +52,76 @@ require (
 	github.com/bluele/gcache v0.0.2 // indirect
 	github.com/cenkalti/backoff/v4 v4.2.1 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
-	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // indirect
 	github.com/dlclark/regexp2 v1.10.0 // indirect
 	github.com/fatih/color v1.15.0 // indirect
-	github.com/fsnotify/fsnotify v1.7.0 // indirect
-	github.com/go-chi/chi/v5 v5.0.8 // indirect
-	github.com/go-logr/logr v1.4.1 // indirect
+	github.com/fsnotify/fsnotify v1.6.0 // indirect
+	github.com/go-logr/logr v1.2.4 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
-	github.com/go-pkgz/expirable-cache/v3 v3.0.0 // indirect
 	github.com/go-sourcemap/sourcemap v2.1.4-0.20211119122758-180fcef48034+incompatible // indirect
-	github.com/golang/snappy v0.0.4 // indirect
-	github.com/google/pprof v0.0.0-20230817174616-7a8ec2ada47b // indirect
-	github.com/grpc-ecosystem/grpc-gateway/v2 v2.19.0 // indirect
-	github.com/hashicorp/golang-lru v1.0.2 // indirect
-	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/google/pprof v0.0.0-20230705174524-200ffdc848b8 // indirect
+	github.com/gorilla/mux v1.8.0 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.16.0 // indirect
+	github.com/hashicorp/golang-lru v0.6.0 // indirect
+	github.com/hashicorp/golang-lru/v2 v2.0.4 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
-	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/jmespath/go-jmespath v0.4.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
-	github.com/klauspost/compress v1.17.4 // indirect
+	github.com/klauspost/compress v1.16.7 // indirect
 	github.com/magiconair/properties v1.8.7 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.19 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
+	github.com/minio/highwayhash v1.0.2 // indirect
 	github.com/minio/sio v0.3.1 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/mr-tron/base58 v1.2.0 // indirect
 	github.com/mstoykov/atlas v0.0.0-20220811071828-388f114305dd // indirect
-	github.com/nats-io/nats.go v1.32.0 // indirect
-	github.com/nats-io/nkeys v0.4.7 // indirect
+	github.com/nats-io/jwt/v2 v2.4.1 // indirect
+	github.com/nats-io/nats.go v1.27.1 // indirect
+	github.com/nats-io/nkeys v0.4.4 // indirect
 	github.com/nats-io/nuid v1.0.1 // indirect
-	github.com/nspcc-dev/go-ordered-json v0.0.0-20240112074137-296698a162ae // indirect
 	github.com/nspcc-dev/rfc6979 v0.2.0 // indirect
+	github.com/onsi/ginkgo v1.16.5 // indirect
 	github.com/onsi/gomega v1.20.2 // indirect
-	github.com/pelletier/go-toml/v2 v2.1.1 // indirect
-	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
-	github.com/prometheus/client_golang v1.18.0 // indirect
-	github.com/prometheus/client_model v0.5.0 // indirect
-	github.com/prometheus/common v0.46.0 // indirect
-	github.com/prometheus/procfs v0.12.0 // indirect
-	github.com/sagikazarmark/locafero v0.4.0 // indirect
-	github.com/sagikazarmark/slog-shim v0.1.0 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.8 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/prometheus/client_golang v1.16.0 // indirect
+	github.com/prometheus/client_model v0.4.0 // indirect
+	github.com/prometheus/common v0.44.0 // indirect
+	github.com/prometheus/procfs v0.11.0 // indirect
 	github.com/serenize/snaker v0.0.0-20201027110005-a7ad2135616e // indirect
-	github.com/sourcegraph/conc v0.3.0 // indirect
-	github.com/spf13/afero v1.11.0 // indirect
-	github.com/spf13/cast v1.6.0 // indirect
+	github.com/spf13/afero v1.9.5 // indirect
+	github.com/spf13/cast v1.5.1 // indirect
+	github.com/spf13/jwalterweatherman v1.1.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
-	github.com/spf13/viper v1.18.2 // indirect
-	github.com/ssgreg/journald v1.0.0 // indirect
-	github.com/subosito/gotenv v1.6.0 // indirect
-	github.com/syndtr/goleveldb v1.0.1-0.20220721030215-126854af5e6d // indirect
+	github.com/spf13/viper v1.16.0 // indirect
+	github.com/subosito/gotenv v1.4.2 // indirect
 	github.com/twmb/murmur3 v1.1.8 // indirect
-	go.opentelemetry.io/otel v1.22.0 // indirect
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.22.0 // indirect
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.22.0 // indirect
-	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.22.0 // indirect
-	go.opentelemetry.io/otel/metric v1.22.0 // indirect
-	go.opentelemetry.io/otel/sdk v1.22.0 // indirect
-	go.opentelemetry.io/otel/trace v1.22.0 // indirect
-	go.opentelemetry.io/proto/otlp v1.1.0 // indirect
+	go.opentelemetry.io/otel v1.16.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.16.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.16.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.16.0 // indirect
+	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.16.0 // indirect
+	go.opentelemetry.io/otel/metric v1.16.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.16.0 // indirect
+	go.opentelemetry.io/otel/trace v1.16.0 // indirect
+	go.opentelemetry.io/proto/otlp v0.20.0 // indirect
+	go.uber.org/atomic v1.11.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
-	golang.org/x/crypto v0.21.0 // indirect
-	golang.org/x/exp v0.0.0-20240119083558-1b970713d09a // indirect
-	golang.org/x/net v0.23.0 // indirect
-	golang.org/x/sync v0.6.0 // indirect
-	golang.org/x/text v0.14.0 // indirect
-	golang.org/x/time v0.5.0 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20240227224415-6ceb2ff114de // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20240227224415-6ceb2ff114de // indirect
-	google.golang.org/grpc v1.63.2 // indirect
-	google.golang.org/protobuf v1.33.0 // indirect
+	golang.org/x/crypto v0.11.0 // indirect
+	golang.org/x/exp v0.0.0-20230626212559-97b1e661b5df // indirect
+	golang.org/x/net v0.12.0 // indirect
+	golang.org/x/sync v0.3.0 // indirect
+	golang.org/x/text v0.11.0 // indirect
+	golang.org/x/time v0.3.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20230629202037-9506855d4529 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20230629202037-9506855d4529 // indirect
+	google.golang.org/grpc v1.56.1 // indirect
+	google.golang.org/protobuf v1.31.0 // indirect
 	gopkg.in/guregu/null.v3 v3.5.0 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
--- a/go.sum
+++ b/go.sum
@ -1,29 +1,62 @@
-git.frostfs.info/TrueCloudLab/frostfs-api-go/v2 v2.16.1-0.20240427200446-67c6f305b21f h1:YyjsQNtrngQzIKOUtApXoi5r5pewatM+cXfpY19vZWo=
-git.frostfs.info/TrueCloudLab/frostfs-api-go/v2 v2.16.1-0.20240427200446-67c6f305b21f/go.mod h1:OBDSr+DqV1z4VDouoX3YMleNc4DPBVBWTG3WDT2PK1o=
-git.frostfs.info/TrueCloudLab/frostfs-contract v0.19.3-0.20240409115729-6eb492025bdd h1:fujTUMMn0wnpEKNDWLejFL916EPuaYD1MdZpk1ZokU8=
-git.frostfs.info/TrueCloudLab/frostfs-contract v0.19.3-0.20240409115729-6eb492025bdd/go.mod h1:F/fe1OoIDKr5Bz99q4sriuHDuf3aZefZy9ZsCqEtgxc=
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
+cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
+cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.44.3/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
+cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
+cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
+cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4=
+cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M=
+cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc=
+cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk=
+cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs=
+cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc=
+cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
+cloud.google.com/go v0.72.0/go.mod h1:M+5Vjvlc2wnp6tjzE102Dw08nGShTscUx2nZMufOKPI=
+cloud.google.com/go v0.74.0/go.mod h1:VV1xSbzvo+9QJOxLDaJfTjx5e+MePCpCWwvftOeQmWk=
+cloud.google.com/go v0.75.0/go.mod h1:VGuuCn7PG0dwsd5XPVm2Mm3wlh3EL55/79EKB6hlPTY=
+cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
+cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
+cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
+cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
+cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
+cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
+cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
+cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
+cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
+cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
+cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA=
+cloud.google.com/go/pubsub v1.3.1/go.mod h1:i+ucay31+CNRpDW4Lu78I4xXG+O1r/MAHgjpRVR+TSU=
+cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
+cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos=
+cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
+cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
+cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
+cloud.google.com/go/storage v1.14.0/go.mod h1:GrKmX003DSIwi9o29oFT7YDnHYwZoctc3fOKtUw0Xmo=
+dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
+git.frostfs.info/TrueCloudLab/frostfs-api-go/v2 v2.15.1-0.20230602142716-68021b910acb h1:gaq4wgk7b+i9+rkDa+goPkv5FzqYlMxEuCKdZ57mSc0=
+git.frostfs.info/TrueCloudLab/frostfs-api-go/v2 v2.15.1-0.20230602142716-68021b910acb/go.mod h1:pKJJRLOChW4zDQsAt1e8k/snWKljJtpkiPfxV53ngjI=
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@ -177,17 +252,16 @@ github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
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@ -201,30 +275,32 @@ github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovk
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 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
 google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
 google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
+google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
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 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
-google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
+google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=
+google.golang.org/protobuf v1.31.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
@ -458,5 +759,13 @@ gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-rsc.io/tmplfunc v0.0.3 h1:53XFQh69AfOa8Tw0Jm7t+GV7KZhOi6jzsCzTtKbMvzU=
-rsc.io/tmplfunc v0.0.3/go.mod h1:AG3sTPzElb1Io3Yg4voV9AGZJuleGAwaVRxL9M49PhA=
+honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
+honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
+rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
+rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
--- a/help.mk
+++ b/help.mk
@ -1,22 +0,0 @@
-.PHONY: help
-
-# Show this help prompt
-help:
-	@echo '  Usage:'
-	@echo ''
-	@echo '    make <target>'
-	@echo ''
-	@echo '  Targets:'
-	@echo ''
-	@awk '/^#/{ comment = substr($$0,3) } comment && /^[a-zA-Z][a-zA-Z0-9.%_/-]+ ?:/{ print "   ", $$1, comment }' $(MAKEFILE_LIST) | column -t -s ':' | grep -v 'IGNORE' | sort | uniq
-
-# Show help for docker/% IGNORE
-help.docker/%:
-	$(eval TARGETS:=$(notdir all lint) ${BINS})
-	@echo '  Usage:'
-	@echo ''
-	@echo '    make docker/% -- Run `make %` in Golang container'
-	@echo ''
-	@echo '  Supported docker targets:'
-	@echo ''
-	@$(foreach bin, $(TARGETS), echo '   ' $(bin);)
--- a/internal/datagen/datagen.go
+++ b/internal/datagen/datagen.go
@ -38,7 +38,7 @@ func (d *Datagen) Exports() modules.Exports {
 	return modules.Exports{Default: d}
 }

-func (d *Datagen) Generator(size int, typ string, streaming bool) *Generator {
-	g := NewGenerator(d.vu, size, strings.ToLower(typ), streaming)
+func (d *Datagen) Generator(size int, typ string) *Generator {
+	g := NewGenerator(d.vu, size, strings.ToLower(typ))
 	return &g
 }
--- a/internal/datagen/generator.go
+++ b/internal/datagen/generator.go
@ -2,10 +2,12 @@ package datagen

 import (
 	"bytes"
+	"crypto/sha256"
+	"encoding/hex"
 	"math/rand"
-	"sync/atomic"
 	"time"

+	"github.com/dop251/goja"
 	"github.com/go-loremipsum/loremipsum"
 	"go.k6.io/k6/js/modules"
 )
@ -26,9 +28,11 @@ type (
 		buf    []byte
 		typ    string
 		offset int
+	}

-		streaming bool
-		seed      *atomic.Int64
+	GenPayloadResponse struct {
+		Payload goja.ArrayBuffer
+		Hash    string
 	}
 )

@ -41,7 +45,7 @@ var payloadTypes = []string{
 	"",
 }

-func NewGenerator(vu modules.VU, size int, typ string, streaming bool) Generator {
+func NewGenerator(vu modules.VU, size int, typ string) Generator {
 	if size <= 0 {
 		panic("size should be positive")
 	}
@ -56,20 +60,17 @@ func NewGenerator(vu modules.VU, size int, typ string, streaming bool) Generator
 	if !found {
 		vu.InitEnv().Logger.Info("Unknown payload type '%s', random will be used.", typ)
 	}
+
+	r := rand.New(rand.NewSource(time.Now().UnixNano()))
+	buf := make([]byte, size+TailSize)
 	g := Generator{
 		vu:   vu,
 		size: size,
+		rand: r,
+		buf:  buf,
 		typ:  typ,
 	}
-
-	if streaming {
-		g.streaming = true
-		g.seed = new(atomic.Int64)
-	} else {
-		g.rand = rand.New(rand.NewSource(time.Now().UnixNano()))
-		g.buf = make([]byte, size+TailSize)
-		g.fillBuffer()
-	}
+	g.fillBuffer()
 	return g
 }

@ -84,17 +85,21 @@ func (g *Generator) fillBuffer() {
 		}
 		g.buf = b.Bytes()
 	default:
-		g.rand.Read(g.buf) // Per docs, err is always nil here
+		rand.Read(g.buf) // Per docs, err is always nil here
 	}
 }

-func (g *Generator) GenPayload() Payload {
-	if g.streaming {
-		return NewStreamPayload(g.size, g.seed.Add(1), g.typ)
+func (g *Generator) GenPayload(calcHash bool) GenPayloadResponse {
+	data := g.nextSlice()
+
+	dataHash := ""
+	if calcHash {
+		hashBytes := sha256.Sum256(data)
+		dataHash = hex.EncodeToString(hashBytes[:])
 	}

-	data := g.nextSlice()
-	return NewFixedPayload(data)
+	payload := g.vu.Runtime().NewArrayBuffer(data)
+	return GenPayloadResponse{Payload: payload, Hash: dataHash}
 }

 func (g *Generator) nextSlice() []byte {
--- a/internal/datagen/generator_test.go
+++ b/internal/datagen/generator_test.go
@ -16,25 +16,25 @@ func TestGenerator(t *testing.T) {

 	t.Run("fails on negative size", func(t *testing.T) {
 		require.Panics(t, func() {
-			_ = NewGenerator(vu, -1, "", false)
+			_ = NewGenerator(vu, -1, "")
 		})
 	})

 	t.Run("fails on zero size", func(t *testing.T) {
 		require.Panics(t, func() {
-			_ = NewGenerator(vu, 0, "", false)
+			_ = NewGenerator(vu, 0, "")
 		})
 	})

 	t.Run("creates slice of specified size", func(t *testing.T) {
 		size := 10
-		g := NewGenerator(vu, size, "", false)
+		g := NewGenerator(vu, size, "")
 		slice := g.nextSlice()
 		require.Len(t, slice, size)
 	})

 	t.Run("creates a different slice on each call", func(t *testing.T) {
-		g := NewGenerator(vu, 1000, "", false)
+		g := NewGenerator(vu, 1000, "")
 		slice1 := g.nextSlice()
 		slice2 := g.nextSlice()
 		// Each slice should be unique (assuming that 1000 random bytes will never coincide
@ -43,7 +43,7 @@ func TestGenerator(t *testing.T) {
 	})

 	t.Run("keeps generating slices after consuming entire tail", func(t *testing.T) {
-		g := NewGenerator(vu, 1000, "", false)
+		g := NewGenerator(vu, 1000, "")
 		initialSlice := g.nextSlice()
 		for i := 0; i < TailSize; i++ {
 			g.nextSlice()
--- a/internal/datagen/payload.go
+++ b/internal/datagen/payload.go
@ -1,121 +0,0 @@
-package datagen
-
-import (
-	"bufio"
-	"bytes"
-	"crypto/sha256"
-	"encoding/hex"
-	"hash"
-	"io"
-	"math/rand"
-
-	"github.com/go-loremipsum/loremipsum"
-)
-
-// Payload represents arbitrary data to be packed into S3 or native object.
-// Implementations could be thread-unsafe.
-type Payload interface {
-	// Reader returns io.Reader instance to read the payload.
-	// Must not be called twice.
-	Reader() io.Reader
-	// Bytes is a helper which reads all data from Reader() into slice.
-	// The sole purpose of this method is to simplify HTTP scenario,
-	// where all payload needs to be read and wrapped.
-	Bytes() []byte
-	// Size returns payload size, which is equal to the total amount of data
-	// that could be read from the Reader().
-	Size() int
-	// Hash returns payload sha256 hash. Must be called after all data is read from the reader.
-	Hash() string
-}
-
-type bytesPayload struct {
-	data []byte
-}
-
-func (p *bytesPayload) Reader() io.Reader {
-	return bytes.NewReader(p.data)
-}
-
-func (p *bytesPayload) Size() int {
-	return len(p.data)
-}
-
-func (p *bytesPayload) Hash() string {
-	h := sha256.Sum256(p.data[:])
-	return hex.EncodeToString(h[:])
-}
-
-func (p *bytesPayload) Bytes() []byte {
-	return p.data
-}
-
-func NewFixedPayload(data []byte) Payload {
-	return &bytesPayload{data: data}
-}
-
-type randomPayload struct {
-	r    io.Reader
-	s    hash.Hash
-	h    string
-	size int
-}
-
-func NewStreamPayload(size int, seed int64, typ string) Payload {
-	var rr io.Reader
-	switch typ {
-	case "text":
-		rr = &textReader{li: loremipsum.NewWithSeed(seed)}
-	default:
-		rr = rand.New(rand.NewSource(seed))
-	}
-
-	lr := io.LimitReader(rr, int64(size))
-	// We need some buffering to write complete blocks in the TeeReader.
-	// Streaming payload read is expected to be used for big objects, thus 4k seems like a good choice.
-	br := bufio.NewReaderSize(lr, 4096)
-	s := sha256.New()
-	tr := io.TeeReader(br, s)
-	return &randomPayload{
-		r:    tr,
-		s:    s,
-		size: size,
-	}
-}
-
-func (p *randomPayload) Reader() io.Reader {
-	return p.r
-}
-
-func (p *randomPayload) Size() int {
-	return p.size
-}
-
-func (p *randomPayload) Hash() string {
-	if p.h == "" {
-		p.h = hex.EncodeToString(p.s.Sum(nil))
-		// Prevent possible misuse.
-		p.r = nil
-		p.s = nil
-	}
-	return p.h
-}
-
-func (p *randomPayload) Bytes() []byte {
-	data, err := io.ReadAll(p.r)
-	if err != nil {
-		// We use only 2 readers, either `bytes.Reader` or `rand.Reader`.
-		// None of them returns errors, thus encountering an error is a fatal error.
-		panic(err)
-	}
-	return data
-}
-
-type textReader struct {
-	li *loremipsum.LoremIpsum
-}
-
-func (r *textReader) Read(p []byte) (n int, err error) {
-	paragraph := r.li.Paragraph()
-	return copy(p, paragraph), nil
-}
--- a/internal/datagen/payload_test.go
+++ b/internal/datagen/payload_test.go
@ -1,40 +0,0 @@
-package datagen
-
-import (
-	"crypto/rand"
-	"crypto/sha256"
-	"encoding/hex"
-	"io"
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestFixedPayload(t *testing.T) {
-	const size = 123
-	data := make([]byte, size)
-	_, err := rand.Read(data)
-	require.NoError(t, err)
-
-	p := NewFixedPayload(data)
-	require.Equal(t, size, p.Size())
-
-	actual, err := io.ReadAll(p.Reader())
-	require.NoError(t, err)
-	require.Equal(t, data, actual)
-
-	h := sha256.Sum256(data)
-	require.Equal(t, hex.EncodeToString(h[:]), p.Hash())
-}
-
-func TestStreamingPayload(t *testing.T) {
-	const size = 123
-
-	p := NewStreamPayload(size, 0, "")
-	require.Equal(t, size, p.Size())
-
-	actual, err := io.ReadAll(p.Reader())
-	require.NoError(t, err)
-	require.Equal(t, size, len(actual))
-	require.Equal(t, sha256.Size*2, len(p.Hash()))
-}
--- a/internal/local/client.go
+++ b/internal/local/client.go
@ -5,15 +5,14 @@ import (

 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
-	"git.frostfs.info/TrueCloudLab/xk6-frostfs/internal/datagen"
 	"git.frostfs.info/TrueCloudLab/xk6-frostfs/internal/local/rawclient"
+	"github.com/dop251/goja"
 	"go.k6.io/k6/js/modules"
 )

 type Client struct {
 	vu modules.VU
 	rc *rawclient.RawClient
-	l  Limiter
 }

 type (
@ -26,21 +25,13 @@ type (
 		Success  bool
 		ObjectID string
 		Error    string
-		Abort    bool
 	}

 	GetResponse    SuccessOrErrorResponse
 	DeleteResponse SuccessOrErrorResponse
 )

-func (c *Client) Put(containerID string, headers map[string]string, payload datagen.Payload) PutResponse {
-	if c.l.IsFull() {
-		return PutResponse{
-			Success: false,
-			Error:   "engine size limit reached",
-			Abort:   true,
-		}
-	}
+func (c *Client) Put(containerID string, headers map[string]string, payload goja.ArrayBuffer) PutResponse {
 	id, err := c.rc.Put(c.vu.Context(), mustParseContainerID(containerID), nil, headers, payload.Bytes())
 	if err != nil {
 		return PutResponse{Error: err.Error()}
--- a/internal/local/limiter.go
+++ b/internal/local/limiter.go
@ -1,105 +0,0 @@
-package local
-
-import (
-	"sync/atomic"
-	"time"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/engine"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/metrics"
-)
-
-var (
-	_ Limiter = &noopLimiter{}
-	_ Limiter = &sizeLimiter{}
-)
-
-type Limiter interface {
-	engine.MetricRegister
-	IsFull() bool
-}
-
-func NewLimiter(maxSizeGB int64) Limiter {
-	if maxSizeGB < 0 {
-		panic("max size is negative")
-	}
-	if maxSizeGB == 0 {
-		return &noopLimiter{}
-	}
-	return &sizeLimiter{
-		maxSize:     maxSizeGB * 1024 * 1024 * 1024,
-		currentSize: &atomic.Int64{},
-	}
-}
-
-type sizeLimiter struct {
-	maxSize     int64
-	currentSize *atomic.Int64
-}
-
-func (*sizeLimiter) AddMethodDuration(method string, d time.Duration)                {}
-func (*sizeLimiter) AddToContainerSize(cnrID string, size int64)                     {}
-func (*sizeLimiter) AddToObjectCounter(shardID string, objectType string, delta int) {}
-func (*sizeLimiter) ClearErrorCounter(shardID string)                                {}
-func (*sizeLimiter) DeleteShardMetrics(shardID string)                               {}
-func (*sizeLimiter) GC() metrics.GCMetrics                                           { return &noopGCMetrics{} }
-func (*sizeLimiter) IncErrorCounter(shardID string)                                  {}
-func (*sizeLimiter) SetMode(shardID string, mode mode.Mode)                          {}
-func (*sizeLimiter) SetObjectCounter(shardID string, objectType string, v uint64)    {}
-func (*sizeLimiter) WriteCache() metrics.WriteCacheMetrics                           { return &noopWriteCacheMetrics{} }
-func (*sizeLimiter) DeleteContainerSize(cnrID string)                                {}
-func (*sizeLimiter) DeleteContainerCount(cnrID string)                               {}
-func (*sizeLimiter) SetContainerObjectCounter(_, _, _ string, _ uint64)              {}
-func (*sizeLimiter) IncContainerObjectCounter(_, _, _ string)                        {}
-func (*sizeLimiter) SubContainerObjectCounter(_, _, _ string, _ uint64)              {}
-func (*sizeLimiter) IncRefillObjectsCount(_, _ string, _ int, _ bool)                {}
-func (*sizeLimiter) SetRefillPercent(_, _ string, _ uint32)                          {}
-func (*sizeLimiter) SetRefillStatus(_, _, _ string)                                  {}
-
-func (sl *sizeLimiter) AddToPayloadCounter(shardID string, size int64) {
-	sl.currentSize.Add(size)
-}
-
-func (sl *sizeLimiter) IsFull() bool {
-	cur := sl.currentSize.Load()
-	return cur > sl.maxSize
-}
-
-type noopLimiter struct{}
-
-func (*noopLimiter) AddMethodDuration(method string, d time.Duration)                {}
-func (*noopLimiter) AddToContainerSize(cnrID string, size int64)                     {}
-func (*noopLimiter) AddToObjectCounter(shardID string, objectType string, delta int) {}
-func (*noopLimiter) AddToPayloadCounter(shardID string, size int64)                  {}
-func (*noopLimiter) ClearErrorCounter(shardID string)                                {}
-func (*noopLimiter) DeleteShardMetrics(shardID string)                               {}
-func (*noopLimiter) GC() metrics.GCMetrics                                           { return &noopGCMetrics{} }
-func (*noopLimiter) IncErrorCounter(shardID string)                                  {}
-func (*noopLimiter) SetMode(shardID string, mode mode.Mode)                          {}
-func (*noopLimiter) SetObjectCounter(shardID string, objectType string, v uint64)    {}
-func (*noopLimiter) WriteCache() metrics.WriteCacheMetrics                           { return &noopWriteCacheMetrics{} }
-func (*noopLimiter) IsFull() bool                                                    { return false }
-func (*noopLimiter) DeleteContainerSize(cnrID string)                                {}
-func (*noopLimiter) DeleteContainerCount(cnrID string)                               {}
-func (*noopLimiter) SetContainerObjectCounter(_, _, _ string, _ uint64)              {}
-func (*noopLimiter) IncContainerObjectCounter(_, _, _ string)                        {}
-func (*noopLimiter) SubContainerObjectCounter(_, _, _ string, _ uint64)              {}
-func (*noopLimiter) IncRefillObjectsCount(_, _ string, _ int, _ bool)                {}
-func (*noopLimiter) SetRefillPercent(_, _ string, _ uint32)                          {}
-func (*noopLimiter) SetRefillStatus(_, _, _ string)                                  {}
-
-type noopGCMetrics struct{}
-
-func (*noopGCMetrics) AddDeletedCount(shardID string, deleted uint64, failed uint64)          {}
-func (*noopGCMetrics) AddExpiredObjectCollectionDuration(string, time.Duration, bool, string) {}
-func (*noopGCMetrics) AddInhumedObjectCount(shardID string, count uint64, objectType string)  {}
-func (*noopGCMetrics) AddRunDuration(shardID string, d time.Duration, success bool)           {}
-
-type noopWriteCacheMetrics struct{}
-
-func (*noopWriteCacheMetrics) AddMethodDuration(_, _, _, _ string, _ bool, _ time.Duration) {}
-func (*noopWriteCacheMetrics) Close(_, _ string)                                            {}
-func (*noopWriteCacheMetrics) IncOperationCounter(_, _, _, _ string, _ metrics.NullBool)    {}
-func (*noopWriteCacheMetrics) SetActualCount(_, _, _ string, count uint64)                  {}
-func (*noopWriteCacheMetrics) SetEstimateSize(_, _, _ string, _ uint64)                     {}
-func (*noopWriteCacheMetrics) SetMode(shardID string, mode string)                          {}
--- a/internal/local/local.go
+++ b/internal/local/local.go
@ -40,18 +40,15 @@ type RootModule struct {
 	mu sync.Mutex
 	// configFile is the name of the configuration file used during one test.
 	configFile string
-	// configDir is the name of the configuration directory used during one test.
-	configDir string
 	// ng is the engine instance used during one test, corresponding to the configFile. Each VU
 	// gets the same engine instance.
 	ng *engine.StorageEngine
-	l  Limiter
 }

 // Local represents an instance of the module for every VU.
 type Local struct {
 	vu            modules.VU
-	ResolveEngine func(context.Context, string, string, bool, int64) (*engine.StorageEngine, Limiter, error)
+	ResolveEngine func(context.Context, string, bool) (*engine.StorageEngine, error)
 }

 // Ensure the interfaces are implemented correctly.
@ -59,9 +56,9 @@ var (
 	_ modules.Module   = &RootModule{}
 	_ modules.Instance = &Local{}

-	objPutSuccess, objPutFails, objPutDuration, objPutData *metrics.Metric
-	objGetSuccess, objGetFails, objGetDuration, objGetData *metrics.Metric
-	objDeleteSuccess, objDeleteFails, objDeleteDuration    *metrics.Metric
+	objPutTotal, objPutFails, objPutDuration          *metrics.Metric
+	objGetTotal, objGetFails, objGetDuration          *metrics.Metric
+	objDeleteTotal, objDeleteFails, objDeleteDuration *metrics.Metric
 )

 func init() {
@ -74,7 +71,7 @@ func (r *RootModule) NewModuleInstance(vu modules.VU) modules.Instance {
 	return NewLocalModuleInstance(vu, r.GetOrCreateEngine)
 }

-func NewLocalModuleInstance(vu modules.VU, resolveEngine func(context.Context, string, string, bool, int64) (*engine.StorageEngine, Limiter, error)) *Local {
+func NewLocalModuleInstance(vu modules.VU, resolveEngine func(context.Context, string, bool) (*engine.StorageEngine, error)) *Local {
 	return &Local{
 		vu:            vu,
 		ResolveEngine: resolveEngine,
@ -103,53 +100,45 @@ func checkResourceLimits() error {
 	return nil
 }

-// GetOrCreateEngine returns the current engine instance for the given configuration file or directory,
+// GetOrCreateEngine returns the current engine instance for the given configuration file,
 // creating a new one if none exists. Note that the identity of configuration files is their
 // file name for the purposes of test runs.
-func (r *RootModule) GetOrCreateEngine(ctx context.Context, configFile string, configDir string, debug bool, maxSizeGB int64) (*engine.StorageEngine, Limiter, error) {
+func (r *RootModule) GetOrCreateEngine(ctx context.Context, configFile string, debug bool) (*engine.StorageEngine, error) {
 	r.mu.Lock()
 	defer r.mu.Unlock()

-	if len(configFile) == 0 && len(configDir) == 0 {
-		return nil, nil, errors.New("provide configFile or configDir")
+	if len(configFile) == 0 {
+		return nil, errors.New("configFile cannot be empty")
 	}

-	if r.l == nil {
-		r.l = NewLimiter(maxSizeGB)
-	}
 	// Create and initialize engine for the given configFile if it doesn't exist already
 	if r.ng == nil {
 		r.configFile = configFile
-		r.configDir = configDir
-		appCfg := config.New(configFile, configDir, "")
-		ngOpts, shardOpts, err := storageEngineOptionsFromConfig(ctx, appCfg, debug, r.l)
+		appCfg := config.New(configFile, "", "")
+		ngOpts, shardOpts, err := storageEngineOptionsFromConfig(appCfg, debug)
 		if err != nil {
-			return nil, nil, fmt.Errorf("creating engine options from config: %v", err)
+			return nil, fmt.Errorf("creating engine options from config: %v", err)
 		}
 		if err := checkResourceLimits(); err != nil {
-			return nil, nil, err
+			return nil, err
 		}
 		r.ng = engine.New(ngOpts...)
 		for i, opts := range shardOpts {
-			if _, err := r.ng.AddShard(ctx, opts...); err != nil {
-				return nil, nil, fmt.Errorf("adding shard %d: %v", i, err)
+			if _, err := r.ng.AddShard(opts...); err != nil {
+				return nil, fmt.Errorf("adding shard %d: %v", i, err)
 			}
 		}
-		if err := r.ng.Open(ctx); err != nil {
-			return nil, nil, fmt.Errorf("opening engine: %v", err)
+		if err := r.ng.Open(); err != nil {
+			return nil, fmt.Errorf("opening engine: %v", err)
 		}
 		if err := r.ng.Init(ctx); err != nil {
-			return nil, nil, fmt.Errorf("initializing engine: %v", err)
+			return nil, fmt.Errorf("initializing engine: %v", err)
 		}
 	} else if configFile != r.configFile {
-		return nil, nil, fmt.Errorf("GetOrCreateEngine called with mismatching configFile after engine was "+
-			"initialized: got %q, want %q", configFile, r.configFile)
-	} else if configDir != r.configDir {
-		return nil, nil, fmt.Errorf("GetOrCreateEngine called with mismatching configDir after engine was "+
-			"initialized: got %q, want %q", configDir, r.configDir)
+		return nil, fmt.Errorf("GetOrCreateEngine called with mismatching configFile after engine was initialized: got %q, want %q", configFile, r.configFile)
 	}

-	return r.ng, r.l, nil
+	return r.ng, nil
 }

 // Exports implements the modules.Instance interface and returns the exports
@ -160,10 +149,10 @@ func (s *Local) Exports() modules.Exports {

 func (s *Local) VU() modules.VU { return s.vu }

-func (s *Local) Connect(configFile, configDir, hexKey string, debug bool, maxSizeGB int64) (*Client, error) {
-	ng, l, err := s.ResolveEngine(s.VU().Context(), configFile, configDir, debug, maxSizeGB)
+func (s *Local) Connect(configFile, hexKey string, debug bool) (*Client, error) {
+	ng, err := s.ResolveEngine(s.VU().Context(), configFile, debug)
 	if err != nil {
-		return nil, fmt.Errorf("connecting to engine for config - file %q dir %q: %v", configFile, configDir, err)
+		return nil, fmt.Errorf("connecting to engine for config %q: %v", configFile, err)
 	}

 	key, err := ParseOrCreateKey(hexKey)
@ -172,19 +161,18 @@ func (s *Local) Connect(configFile, configDir, hexKey string, debug bool, maxSiz
 	}

 	// Register metrics.
-	objPutSuccess, _ = stats.Registry.NewMetric("local_obj_put_success", metrics.Counter)
-	objPutFails, _ = stats.Registry.NewMetric("local_obj_put_fails", metrics.Counter)
-	objPutDuration, _ = stats.Registry.NewMetric("local_obj_put_duration", metrics.Trend, metrics.Time)
-	objPutData, _ = stats.Registry.NewMetric("local_obj_put_bytes", metrics.Counter, metrics.Data)
+	registry := metrics.NewRegistry()
+	objPutTotal, _ = registry.NewMetric("local_obj_put_total", metrics.Counter)
+	objPutFails, _ = registry.NewMetric("local_obj_put_fails", metrics.Counter)
+	objPutDuration, _ = registry.NewMetric("local_obj_put_duration", metrics.Trend, metrics.Time)

-	objGetSuccess, _ = stats.Registry.NewMetric("local_obj_get_success", metrics.Counter)
-	objGetFails, _ = stats.Registry.NewMetric("local_obj_get_fails", metrics.Counter)
-	objGetDuration, _ = stats.Registry.NewMetric("local_obj_get_duration", metrics.Trend, metrics.Time)
-	objGetData, _ = stats.Registry.NewMetric("local_obj_get_bytes", metrics.Counter, metrics.Data)
+	objGetTotal, _ = registry.NewMetric("local_obj_get_total", metrics.Counter)
+	objGetFails, _ = registry.NewMetric("local_obj_get_fails", metrics.Counter)
+	objGetDuration, _ = registry.NewMetric("local_obj_get_duration", metrics.Trend, metrics.Time)

-	objDeleteSuccess, _ = stats.Registry.NewMetric("local_obj_delete_success", metrics.Counter)
-	objDeleteFails, _ = stats.Registry.NewMetric("local_obj_delete_fails", metrics.Counter)
-	objDeleteDuration, _ = stats.Registry.NewMetric("local_obj_delete_duration", metrics.Trend, metrics.Time)
+	objDeleteTotal, _ = registry.NewMetric("local_obj_delete_total", metrics.Counter)
+	objDeleteFails, _ = registry.NewMetric("local_obj_delete_fails", metrics.Counter)
+	objDeleteDuration, _ = registry.NewMetric("local_obj_delete_duration", metrics.Trend, metrics.Time)

 	// Create raw client backed by local storage engine.
 	rc := rawclient.New(ng,
@ -193,32 +181,30 @@ func (s *Local) Connect(configFile, configDir, hexKey string, debug bool, maxSiz
 			if err != nil {
 				stats.Report(s.vu, objPutFails, 1)
 			} else {
-				stats.Report(s.vu, objPutSuccess, 1)
+				stats.Report(s.vu, objPutTotal, 1)
 				stats.ReportDataSent(s.vu, float64(sz))
 				stats.Report(s.vu, objPutDuration, metrics.D(dt))
-				stats.Report(s.vu, objPutData, float64(sz))
 			}
 		}),
 		rawclient.WithGetHandler(func(sz uint64, err error, dt time.Duration) {
 			if err != nil {
 				stats.Report(s.vu, objGetFails, 1)
 			} else {
-				stats.Report(s.vu, objGetSuccess, 1)
+				stats.Report(s.vu, objGetTotal, 1)
 				stats.Report(s.vu, objGetDuration, metrics.D(dt))
 				stats.ReportDataReceived(s.vu, float64(sz))
-				stats.Report(s.vu, objGetData, float64(sz))
 			}
 		}),
 		rawclient.WithDeleteHandler(func(err error, dt time.Duration) {
 			if err != nil {
 				stats.Report(s.vu, objDeleteFails, 1)
 			} else {
-				stats.Report(s.vu, objDeleteSuccess, 1)
+				stats.Report(s.vu, objDeleteTotal, 1)
 				stats.Report(s.vu, objDeleteDuration, metrics.D(dt))
 			}
 		}),
 	)
-	return &Client{vu: s.vu, rc: rc, l: l}, nil
+	return &Client{vu: s.vu, rc: rc}, nil
 }

 type epochState struct{}
@ -231,7 +217,7 @@ func (epochState) CurrentEpoch() uint64 { return 0 }
 // preloaded the storage (if any), by using the same configuration file.
 //
 // Note that the configuration file only needs to contain the storage-specific sections.
-func storageEngineOptionsFromConfig(ctx context.Context, c *config.Config, debug bool, l Limiter) ([]engine.Option, [][]shard.Option, error) {
+func storageEngineOptionsFromConfig(c *config.Config, debug bool) ([]engine.Option, [][]shard.Option, error) {
 	log := zap.L()
 	if debug {
 		var err error
@ -245,12 +231,11 @@ func storageEngineOptionsFromConfig(ctx context.Context, c *config.Config, debug
 		engine.WithErrorThreshold(engineconfig.ShardErrorThreshold(c)),
 		engine.WithShardPoolSize(engineconfig.ShardPoolSize(c)),
 		engine.WithLogger(&logger.Logger{Logger: log}),
-		engine.WithMetrics(l),
 	}

 	var shOpts [][]shard.Option

-	err := engineconfig.IterateShards(c, false, func(sc *shardconfig.Config) error {
+	engineconfig.IterateShards(c, false, func(sc *shardconfig.Config) error {
 		opts := []shard.Option{
 			shard.WithRefillMetabase(sc.RefillMetabase()),
 			shard.WithMode(sc.Mode()),
@ -266,7 +251,6 @@ func storageEngineOptionsFromConfig(ctx context.Context, c *config.Config, debug
 					cfg := blobovniczaconfig.From((*config.Config)(scfg))
 					ss := blobstor.SubStorage{
 						Storage: blobovniczatree.NewBlobovniczaTree(
-							ctx,
 							blobovniczatree.WithRootPath(scfg.Path()),
 							blobovniczatree.WithPermissions(scfg.Perm()),
 							blobovniczatree.WithBlobovniczaSize(cfg.Size()),
@ -311,17 +295,15 @@ func storageEngineOptionsFromConfig(ctx context.Context, c *config.Config, debug
 			opts = append(opts,
 				shard.WithWriteCache(true),
 				shard.WithWriteCacheOptions(
-					[]writecache.Option{
-						writecache.WithPath(wc.Path()),
-						writecache.WithMaxBatchSize(wc.BoltDB().MaxBatchSize()),
-						writecache.WithMaxBatchDelay(wc.BoltDB().MaxBatchDelay()),
-						writecache.WithMaxObjectSize(wc.MaxObjectSize()),
-						writecache.WithSmallObjectSize(wc.SmallObjectSize()),
-						writecache.WithFlushWorkersCount(wc.WorkerCount()),
-						writecache.WithMaxCacheSize(wc.SizeLimit()),
-						writecache.WithNoSync(wc.NoSync()),
-						writecache.WithLogger(&logger.Logger{Logger: log}),
-					},
+					writecache.WithPath(wc.Path()),
+					writecache.WithMaxBatchSize(wc.BoltDB().MaxBatchSize()),
+					writecache.WithMaxBatchDelay(wc.BoltDB().MaxBatchDelay()),
+					writecache.WithMaxObjectSize(wc.MaxObjectSize()),
+					writecache.WithSmallObjectSize(wc.SmallObjectSize()),
+					writecache.WithFlushWorkersCount(wc.WorkersNumber()),
+					writecache.WithMaxCacheSize(wc.SizeLimit()),
+					writecache.WithNoSync(wc.NoSync()),
+					writecache.WithLogger(&logger.Logger{Logger: log}),
 				),
 			)
 		}
@ -375,9 +357,7 @@ func storageEngineOptionsFromConfig(ctx context.Context, c *config.Config, debug

 		return nil
 	})
-	if err != nil {
-		return nil, nil, fmt.Errorf("iterate shards: %w", err)
-	}
+
 	return ngOpts, shOpts, nil
 }

--- a/internal/local/rawclient/rawclient.go
+++ b/internal/local/rawclient/rawclient.go
@ -52,7 +52,7 @@ func (c *RawClient) Put(ctx context.Context, containerID cid.ID, ownerID *user.I

 	obj := object.New()
 	obj.SetContainerID(containerID)
-	obj.SetOwnerID(*ownerID)
+	obj.SetOwnerID(ownerID)
 	obj.SetAttributes(attrs...)
 	obj.SetPayload(payload)
 	obj.SetPayloadSize(uint64(sz))
--- a/internal/native/cache.go
+++ b/internal/native/cache.go
@ -1,58 +0,0 @@
-package native
-
-import (
-	"context"
-	"sync"
-	"time"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
-)
-
-const networkCacheTTL = time.Minute
-
-var networkInfoCache = &networkInfoCacheT{}
-
-type networkInfoCacheT struct {
-	guard   sync.RWMutex
-	current *netmap.NetworkInfo
-	fetchTS time.Time
-}
-
-func (c *networkInfoCacheT) getOrFetch(ctx context.Context, cli *client.Client) (*netmap.NetworkInfo, error) {
-	if v := c.get(); v != nil {
-		return v, nil
-	}
-	return c.fetch(ctx, cli)
-}
-
-func (c *networkInfoCacheT) get() *netmap.NetworkInfo {
-	c.guard.RLock()
-	defer c.guard.RUnlock()
-
-	if c.current == nil || time.Since(c.fetchTS) > networkCacheTTL {
-		return nil
-	}
-
-	return c.current
-}
-
-func (c *networkInfoCacheT) fetch(ctx context.Context, cli *client.Client) (*netmap.NetworkInfo, error) {
-	c.guard.Lock()
-	defer c.guard.Unlock()
-
-	if time.Since(c.fetchTS) <= networkCacheTTL {
-		return c.current, nil
-	}
-
-	res, err := cli.NetworkInfo(ctx, client.PrmNetworkInfo{})
-	if err != nil {
-		return nil, err
-	}
-
-	v := res.Info()
-	c.current = &v
-	c.fetchTS = time.Now()
-
-	return c.current, nil
-}
--- a/internal/native/client.go
+++ b/internal/native/client.go
@ -1,6 +1,7 @@
 package native

 import (
+	"bytes"
 	"context"
 	"crypto/ecdsa"
 	"crypto/sha256"
@ -22,8 +23,8 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/version"
 	"git.frostfs.info/TrueCloudLab/tzhash/tz"
-	"git.frostfs.info/TrueCloudLab/xk6-frostfs/internal/datagen"
 	"git.frostfs.info/TrueCloudLab/xk6-frostfs/internal/stats"
+	"github.com/dop251/goja"
 	"go.k6.io/k6/js/modules"
 	"go.k6.io/k6/metrics"
 )
@ -35,7 +36,6 @@ type (
 		tok            session.Object
 		cli            *client.Client
 		prepareLocally bool
-		maxObjSize     uint64
 	}

 	PutResponse struct {
@ -72,13 +72,12 @@ type (
 		hdr            object.Object
 		payload        []byte
 		prepareLocally bool
-		maxObjSize     uint64
 	}
 )

 const defaultBufferSize = 64 * 1024

-func (c *Client) Put(containerID string, headers map[string]string, payload datagen.Payload, chunkSize int) PutResponse {
+func (c *Client) Put(containerID string, headers map[string]string, payload goja.ArrayBuffer, chunkSize int) PutResponse {
 	cliContainerID := parseContainerID(containerID)

 	tok := c.tok
@ -102,10 +101,10 @@ func (c *Client) Put(containerID string, headers map[string]string, payload data

 	var o object.Object
 	o.SetContainerID(cliContainerID)
-	o.SetOwnerID(owner)
+	o.SetOwnerID(&owner)
 	o.SetAttributes(attrs...)

-	resp, err := put(c.vu, c.cli, c.prepareLocally, &tok, &o, payload, chunkSize, c.maxObjSize)
+	resp, err := put(c.vu, c.cli, c.prepareLocally, &tok, &o, payload.Bytes(), chunkSize)
 	if err != nil {
 		return PutResponse{Success: false, Error: err.Error()}
 	}
@ -129,9 +128,9 @@ func (c *Client) Delete(containerID string, objectID string) DeleteResponse {
 	start := time.Now()

 	var prm client.PrmObjectDelete
-	prm.ObjectID = &cliObjectID
-	prm.ContainerID = &cliContainerID
-	prm.Session = &tok
+	prm.ByID(cliObjectID)
+	prm.FromContainer(cliContainerID)
+	prm.WithinSession(tok)

 	_, err = c.cli.ObjectDelete(c.vu.Context(), prm)
 	if err != nil {
@ -139,7 +138,7 @@ func (c *Client) Delete(containerID string, objectID string) DeleteResponse {
 		return DeleteResponse{Success: false, Error: err.Error()}
 	}

-	stats.Report(c.vu, objDeleteSuccess, 1)
+	stats.Report(c.vu, objDeleteTotal, 1)
 	stats.Report(c.vu, objDeleteDuration, metrics.D(time.Since(start)))
 	return DeleteResponse{Success: true}
 }
@ -160,11 +159,11 @@ func (c *Client) Get(containerID, objectID string) GetResponse {
 	start := time.Now()

 	var prm client.PrmObjectGet
-	prm.ObjectID = &cliObjectID
-	prm.ContainerID = &cliContainerID
-	prm.Session = &tok
+	prm.ByID(cliObjectID)
+	prm.FromContainer(cliContainerID)
+	prm.WithinSession(tok)

-	objSize := 0
+	var objSize = 0
 	err = get(c.cli, prm, c.vu.Context(), func(data []byte) {
 		objSize += len(data)
 	})
@ -173,10 +172,9 @@ func (c *Client) Get(containerID, objectID string) GetResponse {
 		return GetResponse{Success: false, Error: err.Error()}
 	}

-	stats.Report(c.vu, objGetSuccess, 1)
+	stats.Report(c.vu, objGetTotal, 1)
 	stats.Report(c.vu, objGetDuration, metrics.D(time.Since(start)))
 	stats.ReportDataReceived(c.vu, float64(objSize))
-	stats.Report(c.vu, objGetData, float64(objSize))
 	return GetResponse{Success: true}
 }

@ -186,7 +184,7 @@ func get(
 	ctx context.Context,
 	onDataChunk func(chunk []byte),
 ) error {
-	buf := make([]byte, defaultBufferSize)
+	var buf = make([]byte, defaultBufferSize)

 	objectReader, err := cli.ObjectGetInit(ctx, prm)
 	if err != nil {
@ -229,9 +227,9 @@ func (c *Client) VerifyHash(containerID, objectID, expectedHash string) VerifyHa
 	}

 	var prm client.PrmObjectGet
-	prm.ObjectID = &cliObjectID
-	prm.ContainerID = &cliContainerID
-	prm.Session = &tok
+	prm.ByID(cliObjectID)
+	prm.FromContainer(cliContainerID)
+	prm.WithinSession(tok)

 	hasher := sha256.New()
 	err = get(c.cli, prm, c.vu.Context(), func(data []byte) {
@ -242,7 +240,7 @@ func (c *Client) VerifyHash(containerID, objectID, expectedHash string) VerifyHa
 	}
 	actualHash := hex.EncodeToString(hasher.Sum(nil))
 	if actualHash != expectedHash {
-		return VerifyHashResponse{Success: false, Error: "hash mismatch"}
+		return VerifyHashResponse{Success: true, Error: "hash mismatch"}
 	}

 	return VerifyHashResponse{Success: true}
@ -311,9 +309,10 @@ func (c *Client) PutContainer(params map[string]string) PutContainerResponse {
 	}

 	start := time.Now()
-	res, err := c.cli.ContainerPut(c.vu.Context(), client.PrmContainerPut{
-		Container: &cnr,
-	})
+	var prm client.PrmContainerPut
+	prm.SetContainer(cnr)
+
+	res, err := c.cli.ContainerPut(c.vu.Context(), prm)
 	if err != nil {
 		return c.putCnrErrorResponse(err)
 	}
@ -329,7 +328,7 @@ func (c *Client) PutContainer(params map[string]string) PutContainerResponse {
 	return PutContainerResponse{Success: true, ContainerID: res.ID().EncodeToString()}
 }

-func (c *Client) Onsite(containerID string, payload datagen.Payload) PreparedObject {
+func (c *Client) Onsite(containerID string, payload goja.ArrayBuffer) PreparedObject {
 	maxObjectSize, epoch, hhDisabled, err := parseNetworkInfo(c.vu.Context(), c.cli)
 	if err != nil {
 		panic(err)
@ -356,7 +355,7 @@ func (c *Client) Onsite(containerID string, payload datagen.Payload) PreparedObj
 	obj.SetVersion(&apiVersion)
 	obj.SetType(object.TypeRegular)
 	obj.SetContainerID(cliContainerID)
-	obj.SetOwnerID(owner)
+	obj.SetOwnerID(&owner)
 	obj.SetPayloadSize(uint64(ln))
 	obj.SetCreationEpoch(epoch)

@ -375,7 +374,6 @@ func (c *Client) Onsite(containerID string, payload datagen.Payload) PreparedObj
 		hdr:            *obj,
 		payload:        data,
 		prepareLocally: c.prepareLocally,
-		maxObjSize:     c.maxObjSize,
 	}
 }

@ -401,7 +399,7 @@ func (p PreparedObject) Put(headers map[string]string) PutResponse {
 		return PutResponse{Success: false, Error: err.Error()}
 	}

-	_, err = put(p.vu, p.cli, p.prepareLocally, nil, &obj, datagen.NewFixedPayload(p.payload), 0, p.maxObjSize)
+	_, err = put(p.vu, p.cli, p.prepareLocally, nil, &obj, p.payload, 0)
 	if err != nil {
 		return PutResponse{Success: false, Error: err.Error()}
 	}
@ -416,37 +414,33 @@ func (s epochSource) CurrentEpoch() uint64 {
 }

 func put(vu modules.VU, cli *client.Client, prepareLocally bool, tok *session.Object,
-	hdr *object.Object, payload datagen.Payload, chunkSize int, maxObjSize uint64,
-) (*client.ResObjectPut, error) {
+	hdr *object.Object, payload []byte, chunkSize int) (*client.ResObjectPut, error) {
 	bufSize := defaultBufferSize
 	if chunkSize > 0 {
 		bufSize = chunkSize
 	}
 	buf := make([]byte, bufSize)
-	rdr := payload.Reader()
-	sz := payload.Size()
+	rdr := bytes.NewReader(payload)
+	sz := rdr.Size()

 	// starting upload
 	start := time.Now()

 	var prm client.PrmObjectPutInit
 	if tok != nil {
-		prm.Session = tok
+		prm.WithinSession(*tok)
 	}
 	if chunkSize > 0 {
-		prm.MaxChunkLength = chunkSize
+		prm.SetGRPCPayloadChunkLen(chunkSize)
 	}
 	if prepareLocally {
-		ni, err := networkInfoCache.getOrFetch(vu.Context(), cli)
+		res, err := cli.NetworkInfo(vu.Context(), client.PrmNetworkInfo{})
 		if err != nil {
 			return nil, err
 		}
-		prm.MaxSize = ni.MaxObjectSize()
-		prm.EpochSource = epochSource(ni.CurrentEpoch())
-		prm.WithoutHomomorphHash = true
-		if maxObjSize > 0 {
-			prm.MaxSize = maxObjSize
-		}
+		prm.WithObjectMaxSize(res.Info().MaxObjectSize())
+		prm.WithEpochSource(epochSource(res.Info().CurrentEpoch()))
+		prm.WithoutHomomorphicHash(true)
 	}

 	objectWriter, err := cli.ObjectPutInit(vu.Context(), prm)
@ -475,10 +469,9 @@ func put(vu modules.VU, cli *client.Client, prepareLocally bool, tok *session.Ob
 		return nil, err
 	}

-	stats.Report(vu, objPutSuccess, 1)
+	stats.Report(vu, objPutTotal, 1)
 	stats.ReportDataSent(vu, float64(sz))
 	stats.Report(vu, objPutDuration, metrics.D(time.Since(start)))
-	stats.Report(vu, objPutData, float64(sz))

 	return resp, nil
 }
@ -506,9 +499,10 @@ func (x *waitParams) setDefaults() {

 func (c *Client) waitForContainerPresence(ctx context.Context, cnrID cid.ID, wp *waitParams) error {
 	return waitFor(ctx, wp, func(ctx context.Context) bool {
-		_, err := c.cli.ContainerGet(ctx, client.PrmContainerGet{
-			ContainerID: &cnrID,
-		})
+		var prm client.PrmContainerGet
+		prm.SetContainer(cnrID)
+
+		_, err := c.cli.ContainerGet(ctx, prm)
 		return err == nil
 	})
 }
--- a/internal/native/native.go
+++ b/internal/native/native.go
@ -8,7 +8,6 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
 	frostfsecdsa "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/crypto/ecdsa"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/session"
-	"git.frostfs.info/TrueCloudLab/xk6-frostfs/internal/stats"
 	"github.com/google/uuid"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"go.k6.io/k6/js/modules"
@ -29,10 +28,10 @@ var (
 	_ modules.Instance = &Native{}
 	_ modules.Module   = &RootModule{}

-	objPutSuccess, objPutFails, objPutDuration, objPutData *metrics.Metric
-	objGetSuccess, objGetFails, objGetDuration, objGetData *metrics.Metric
-	objDeleteSuccess, objDeleteFails, objDeleteDuration    *metrics.Metric
-	cnrPutTotal, cnrPutFails, cnrPutDuration               *metrics.Metric
+	objPutTotal, objPutFails, objPutDuration          *metrics.Metric
+	objGetTotal, objGetFails, objGetDuration          *metrics.Metric
+	objDeleteTotal, objDeleteFails, objDeleteDuration *metrics.Metric
+	cnrPutTotal, cnrPutFails, cnrPutDuration          *metrics.Metric
 )

 func init() {
@ -52,17 +51,13 @@ func (n *Native) Exports() modules.Exports {
 	return modules.Exports{Default: n}
 }

-func (n *Native) Connect(endpoint, hexPrivateKey string, dialTimeout, streamTimeout int, prepareLocally bool, maxObjSize int) (*Client, error) {
+func (n *Native) Connect(endpoint, hexPrivateKey string, dialTimeout, streamTimeout int, prepareLocally bool) (*Client, error) {
 	var (
 		cli client.Client
 		pk  *keys.PrivateKey
 		err error
 	)

-	if maxObjSize < 0 {
-		return nil, fmt.Errorf("max object size value must be positive")
-	}
-
 	pk, err = keys.NewPrivateKey()
 	if len(hexPrivateKey) != 0 {
 		pk, err = keys.NewPrivateKeyFromHex(hexPrivateKey)
@ -72,18 +67,19 @@ func (n *Native) Connect(endpoint, hexPrivateKey string, dialTimeout, streamTime
 	}

 	var prmInit client.PrmInit
-	prmInit.Key = pk.PrivateKey
+	prmInit.ResolveFrostFSFailures()
+	prmInit.SetDefaultPrivateKey(pk.PrivateKey)
 	cli.Init(prmInit)

 	var prmDial client.PrmDial
-	prmDial.Endpoint = endpoint
+	prmDial.SetServerURI(endpoint)

 	if dialTimeout > 0 {
-		prmDial.DialTimeout = time.Duration(dialTimeout) * time.Second
+		prmDial.SetTimeout(time.Duration(dialTimeout) * time.Second)
 	}

 	if streamTimeout > 0 {
-		prmDial.StreamTimeout = time.Duration(streamTimeout) * time.Second
+		prmDial.SetStreamTimeout(time.Duration(streamTimeout) * time.Second)
 	}

 	err = cli.Dial(n.vu.Context(), prmDial)
@ -93,9 +89,9 @@ func (n *Native) Connect(endpoint, hexPrivateKey string, dialTimeout, streamTime

 	// generate session token
 	exp := uint64(math.MaxUint64)
-	sessionResp, err := cli.SessionCreate(n.vu.Context(), client.PrmSessionCreate{
-		Expiration: exp,
-	})
+	var prmSessionCreate client.PrmSessionCreate
+	prmSessionCreate.SetExp(exp)
+	sessionResp, err := cli.SessionCreate(n.vu.Context(), prmSessionCreate)
 	if err != nil {
 		return nil, fmt.Errorf("dial endpoint: %s %w", endpoint, err)
 	}
@ -118,35 +114,23 @@ func (n *Native) Connect(endpoint, hexPrivateKey string, dialTimeout, streamTime
 	tok.SetAuthKey(&key)
 	tok.SetExp(exp)

-	if prepareLocally && maxObjSize > 0 {
-		res, err := cli.NetworkInfo(n.vu.Context(), client.PrmNetworkInfo{})
-		if err != nil {
-			return nil, err
-		}
-		if uint64(maxObjSize) > res.Info().MaxObjectSize() {
-			return nil, fmt.Errorf("max object size must be not greater than %d bytes", res.Info().MaxObjectSize())
-		}
-	}
-
 	// register metrics
+	registry := metrics.NewRegistry()
+	objPutTotal, _ = registry.NewMetric("frostfs_obj_put_total", metrics.Counter)
+	objPutFails, _ = registry.NewMetric("frostfs_obj_put_fails", metrics.Counter)
+	objPutDuration, _ = registry.NewMetric("frostfs_obj_put_duration", metrics.Trend, metrics.Time)

-	objPutSuccess, _ = stats.Registry.NewMetric("frostfs_obj_put_success", metrics.Counter)
-	objPutFails, _ = stats.Registry.NewMetric("frostfs_obj_put_fails", metrics.Counter)
-	objPutDuration, _ = stats.Registry.NewMetric("frostfs_obj_put_duration", metrics.Trend, metrics.Time)
-	objPutData, _ = stats.Registry.NewMetric("frostfs_obj_put_bytes", metrics.Counter, metrics.Data)
+	objGetTotal, _ = registry.NewMetric("frostfs_obj_get_total", metrics.Counter)
+	objGetFails, _ = registry.NewMetric("frostfs_obj_get_fails", metrics.Counter)
+	objGetDuration, _ = registry.NewMetric("frostfs_obj_get_duration", metrics.Trend, metrics.Time)

-	objGetSuccess, _ = stats.Registry.NewMetric("frostfs_obj_get_success", metrics.Counter)
-	objGetFails, _ = stats.Registry.NewMetric("frostfs_obj_get_fails", metrics.Counter)
-	objGetDuration, _ = stats.Registry.NewMetric("frostfs_obj_get_duration", metrics.Trend, metrics.Time)
-	objGetData, _ = stats.Registry.NewMetric("frostfs_obj_get_bytes", metrics.Counter, metrics.Data)
+	objDeleteTotal, _ = registry.NewMetric("frostfs_obj_delete_total", metrics.Counter)
+	objDeleteFails, _ = registry.NewMetric("frostfs_obj_delete_fails", metrics.Counter)
+	objDeleteDuration, _ = registry.NewMetric("frostfs_obj_delete_duration", metrics.Trend, metrics.Time)

-	objDeleteSuccess, _ = stats.Registry.NewMetric("frostfs_obj_delete_success", metrics.Counter)
-	objDeleteFails, _ = stats.Registry.NewMetric("frostfs_obj_delete_fails", metrics.Counter)
-	objDeleteDuration, _ = stats.Registry.NewMetric("frostfs_obj_delete_duration", metrics.Trend, metrics.Time)
-
-	cnrPutTotal, _ = stats.Registry.NewMetric("frostfs_cnr_put_total", metrics.Counter)
-	cnrPutFails, _ = stats.Registry.NewMetric("frostfs_cnr_put_fails", metrics.Counter)
-	cnrPutDuration, _ = stats.Registry.NewMetric("frostfs_cnr_put_duration", metrics.Trend, metrics.Time)
+	cnrPutTotal, _ = registry.NewMetric("frostfs_cnr_put_total", metrics.Counter)
+	cnrPutFails, _ = registry.NewMetric("frostfs_cnr_put_fails", metrics.Counter)
+	cnrPutDuration, _ = registry.NewMetric("frostfs_cnr_put_duration", metrics.Trend, metrics.Time)

 	return &Client{
 		vu:             n.vu,
@ -154,6 +138,5 @@ func (n *Native) Connect(endpoint, hexPrivateKey string, dialTimeout, streamTime
 		tok:            tok,
 		cli:            &cli,
 		prepareLocally: prepareLocally,
-		maxObjSize:     uint64(maxObjSize),
 	}, nil
 }
--- a/internal/registry/obj_exporter.go
+++ b/internal/registry/obj_exporter.go
@ -1,124 +0,0 @@
-package registry
-
-import (
-	"fmt"
-	"os"
-)
-
-type ObjExporter struct {
-	selector *ObjSelector
-}
-
-type PreGenerateInfo struct {
-	Buckets    []string  `json:"buckets"`
-	Containers []string  `json:"containers"`
-	Objects    []ObjInfo `json:"objects"`
-	ObjSize    string    `json:"obj_size"`
-}
-
-type ObjInfo struct {
-	Bucket string `json:"bucket"`
-	Object string `json:"object"`
-	CID    string `json:"cid"`
-	OID    string `json:"oid"`
-}
-
-func NewObjExporter(selector *ObjSelector) *ObjExporter {
-	return &ObjExporter{selector: selector}
-}
-
-func (o *ObjExporter) ExportJSONPreGen(fileName string) error {
-	f, err := os.Create(fileName)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-
-	// there can be a lot of object, so manually form json
-	if _, err = f.WriteString(`{"objects":[`); err != nil {
-		return err
-	}
-
-	bucketMap := make(map[string]struct{})
-	containerMap := make(map[string]struct{})
-
-	count, err := o.selector.Count()
-	if err != nil {
-		return err
-	}
-
-	var comma string
-	for i := 0; i < count; i++ {
-		info := o.selector.NextObject()
-		if info == nil {
-			break
-		}
-
-		if err = writeObjectInfo(comma, info, f); err != nil {
-			return err
-		}
-
-		if i == 0 {
-			comma = ","
-		}
-
-		if info.S3Bucket != "" {
-			bucketMap[info.S3Bucket] = struct{}{}
-		}
-		if info.CID != "" {
-			containerMap[info.CID] = struct{}{}
-		}
-	}
-
-	if _, err = f.WriteString(`]`); err != nil {
-		return err
-	}
-
-	if len(bucketMap) > 0 {
-		if err = writeContainerInfo("buckets", bucketMap, f); err != nil {
-			return err
-		}
-	}
-	if len(containerMap) > 0 {
-		if err = writeContainerInfo("containers", containerMap, f); err != nil {
-			return err
-		}
-	}
-
-	if _, err = f.WriteString(`}`); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func writeObjectInfo(comma string, info *ObjectInfo, f *os.File) (err error) {
-	var res string
-	if info.S3Bucket != "" || info.S3Key != "" {
-		res = fmt.Sprintf(`%s{"bucket":"%s","object":"%s"}`, comma, info.S3Bucket, info.S3Key)
-	} else {
-		res = fmt.Sprintf(`%s{"cid":"%s","oid":"%s"}`, comma, info.CID, info.OID)
-	}
-	_, err = f.WriteString(res)
-	return err
-}
-
-func writeContainerInfo(attrName string, bucketMap map[string]struct{}, f *os.File) (err error) {
-	if _, err = f.WriteString(fmt.Sprintf(`,"%s":[`, attrName)); err != nil {
-		return err
-	}
-
-	i := 0
-	comma := ""
-	for bucket := range bucketMap {
-		if _, err = f.WriteString(fmt.Sprintf(`%s"%s"`, comma, bucket)); err != nil {
-			return err
-		}
-		if i == 0 {
-			comma = ","
-		}
-		i++
-	}
-	_, err = f.WriteString(`]`)
-	return err
-}
--- a/internal/registry/obj_exporter_test.go
+++ b/internal/registry/obj_exporter_test.go
@ -1,156 +0,0 @@
-package registry
-
-import (
-	"context"
-	"encoding/json"
-	"fmt"
-	"math/rand"
-	"os"
-	"path/filepath"
-	"slices"
-	"strings"
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-type expectedResult struct {
-	mode     string
-	objects  []ObjectInfo
-	dir      string
-	dbName   string
-	jsonName string
-}
-
-func TestObjectExporter(t *testing.T) {
-	names := []string{"s3", "grpc"}
-	for _, name := range names {
-		t.Run(name, runExportTest)
-		t.Run(name+"-changed", runExportChangedTest)
-		t.Run(name+"-empty", runExportEmptyTest)
-	}
-}
-
-func runExportTest(t *testing.T) {
-	expected := getExpectedResult(t)
-	objReg := getFilledRegistry(t, expected)
-	objExp := NewObjExporter(NewObjSelector(objReg, 0, SelectorOneshot, &ObjFilter{Status: statusCreated}))
-
-	require.NoError(t, objExp.ExportJSONPreGen(expected.jsonName))
-	require.NoError(t, checkExported(expected.objects, expected.jsonName))
-}
-
-func runExportChangedTest(t *testing.T) {
-	expected := getExpectedResult(t)
-	objReg := getFilledRegistry(t, expected)
-
-	newStatus := randString(10)
-	num := randPositiveInt(1, len(expected.objects))
-	changedObjects := make([]ObjectInfo, num)
-	require.Equal(t, num, copy(changedObjects[:], expected.objects[:]))
-
-	sel := NewObjSelector(objReg, 0, SelectorOneshot, &ObjFilter{Status: statusCreated})
-	for i := range changedObjects {
-		changedObjects[i].Status = newStatus
-		require.NoError(t, objReg.SetObjectStatus(sel.NextObject().Id, statusCreated, newStatus))
-	}
-
-	objExp := NewObjExporter(NewObjSelector(objReg, 0, SelectorOneshot, &ObjFilter{Status: newStatus}))
-	require.NoError(t, objExp.ExportJSONPreGen(expected.jsonName))
-	require.NoError(t, checkExported(changedObjects, expected.jsonName))
-}
-
-func runExportEmptyTest(t *testing.T) {
-	expected := getExpectedResult(t)
-	expected.objects = make([]ObjectInfo, 0)
-	objReg := getFilledRegistry(t, expected)
-	objExp := NewObjExporter(NewObjSelector(objReg, 0, SelectorOneshot, &ObjFilter{Status: statusCreated}))
-
-	require.NoError(t, objExp.ExportJSONPreGen(expected.jsonName))
-	require.NoError(t, checkExported(expected.objects, expected.jsonName))
-}
-
-func getExpectedResult(t *testing.T) expectedResult {
-	num := randPositiveInt(2, 100)
-	mode := getMode(t.Name())
-	require.NotEqual(t, "", mode, "test mode should contain either \"s3\" or\"grpc\"")
-	dir := t.TempDir()
-	res := expectedResult{
-		mode:     mode,
-		objects:  generateObjectInfo(num, t.Name()),
-		dir:      dir,
-		dbName:   filepath.Join(dir, "registry-"+mode+".db"),
-		jsonName: filepath.Join(dir, "registry-"+mode+".json"),
-	}
-	return res
-}
-
-func randPositiveInt(min, max int) int {
-	return rand.Intn(max-min) + min
-}
-
-func getMode(name string) (res string) {
-	if strings.Contains(name, "s3") {
-		res = filepath.Base(name)
-	}
-	if strings.Contains(name, "grpc") {
-		res = filepath.Base(name)
-	}
-	return res
-}
-
-func generateObjectInfo(num int, mode string) []ObjectInfo {
-	res := make([]ObjectInfo, num)
-	for i := range res {
-		res[i] = randomObjectInfo()
-		if !strings.Contains(mode, "s3") {
-			res[i].S3Bucket = ""
-			res[i].S3Key = ""
-		}
-		if !strings.Contains(mode, "grpc") {
-			res[i].CID = ""
-			res[i].OID = ""
-		}
-	}
-	return res
-}
-
-func getFilledRegistry(t *testing.T, expected expectedResult) *ObjRegistry {
-	objReg := NewObjRegistry(context.Background(), expected.dbName)
-	for i := range expected.objects {
-		require.NoError(t, objReg.AddObject(expected.objects[i].CID, expected.objects[i].OID, expected.objects[i].S3Bucket, expected.objects[i].S3Key, expected.objects[i].PayloadHash))
-	}
-	return objReg
-}
-
-func checkExported(expected []ObjectInfo, fileName string) error {
-	file, err := os.ReadFile(fileName)
-	if err != nil {
-		return err
-	}
-
-	if !json.Valid(file) {
-		return fmt.Errorf("exported json file %s is invalid", fileName)
-	}
-
-	var actual PreGenerateInfo
-	if json.Unmarshal(file, &actual) != nil {
-		return err
-	}
-
-	if len(expected) != len(actual.Objects) {
-		return fmt.Errorf("expected len(): %v, got len(): %v", len(expected), len(actual.Objects))
-	}
-
-	for i := range expected {
-		if !slices.ContainsFunc(actual.Objects, func(oi ObjInfo) bool {
-			compareS3 := oi.Bucket == expected[i].S3Bucket && oi.Object == expected[i].S3Key
-			comparegRPC := oi.CID == expected[i].CID && oi.OID == expected[i].OID
-			return compareS3 && comparegRPC
-		}) {
-			return fmt.Errorf("object %v not found in exported json file %s", expected[i], fileName)
-		}
-	}
-
-	return nil
-}
--- a/internal/registry/obj_info_test.go
+++ b/internal/registry/obj_info_test.go
@ -101,7 +101,7 @@ func randomObjectInfo() ObjectInfo {
 func randString(n int) string {
 	var sb strings.Builder
 	for i := 0; i < n; i++ {
-		sb.WriteRune('a' + rune(rand.Int31())%('z'-'a'+1))
+		sb.WriteRune('a' + rune(rand.Int())%('z'-'a'+1))
 	}
 	return sb.String()
 }
--- a/internal/registry/obj_registry.go
+++ b/internal/registry/obj_registry.go
@ -44,7 +44,7 @@ func NewObjRegistry(ctx context.Context, dbFilePath string) *ObjRegistry {
 }

 func (o *ObjRegistry) AddObject(cid, oid, s3Bucket, s3Key, payloadHash string) error {
-	return o.boltDB.Batch(func(tx *bbolt.Tx) error {
+	return o.boltDB.Update(func(tx *bbolt.Tx) error {
 		b, err := tx.CreateBucketIfNotExists([]byte(statusCreated))
 		if err != nil {
 			return err
@ -75,7 +75,7 @@ func (o *ObjRegistry) AddObject(cid, oid, s3Bucket, s3Key, payloadHash string) e
 }

 func (o *ObjRegistry) SetObjectStatus(id uint64, oldStatus, newStatus string) error {
-	return o.boltDB.Batch(func(tx *bbolt.Tx) error {
+	return o.boltDB.Update(func(tx *bbolt.Tx) error {
 		oldB := tx.Bucket([]byte(oldStatus))
 		if oldB == nil {
 			return fmt.Errorf("bucket doesn't exist: '%s'", oldStatus)
@ -110,7 +110,7 @@ func (o *ObjRegistry) SetObjectStatus(id uint64, oldStatus, newStatus string) er
 }

 func (o *ObjRegistry) DeleteObject(id uint64) error {
-	return o.boltDB.Batch(func(tx *bbolt.Tx) error {
+	return o.boltDB.Update(func(tx *bbolt.Tx) error {
 		return tx.ForEach(func(_ []byte, b *bbolt.Bucket) error {
 			return b.Delete(encodeId(id))
 		})
--- a/internal/registry/obj_selector.go
+++ b/internal/registry/obj_selector.go
@ -3,15 +3,12 @@ package registry
 import (
 	"context"
 	"fmt"
-	"sync"
 	"time"

 	"github.com/nspcc-dev/neo-go/pkg/io"
 	"go.etcd.io/bbolt"
 )

-const nextObjectTimeout = 10 * time.Second
-
 type ObjFilter struct {
 	Status string
 	Age    int
@ -23,9 +20,6 @@ type ObjSelector struct {
 	boltDB    *bbolt.DB
 	filter    *ObjFilter
 	cacheSize int
-	kind      SelectorKind
-	// Sync synchronizes VU used for deletion.
-	Sync sync.WaitGroup
 }

 // objectSelectCache is the default maximum size of a batch to select from DB.
@ -33,7 +27,7 @@ const objectSelectCache = 1000

 // NewObjSelector creates a new instance of object selector that can iterate over
 // objects in the specified registry.
-func NewObjSelector(registry *ObjRegistry, selectionSize int, kind SelectorKind, filter *ObjFilter) *ObjSelector {
+func NewObjSelector(registry *ObjRegistry, selectionSize int, filter *ObjFilter) *ObjSelector {
 	if selectionSize <= 0 {
 		selectionSize = objectSelectCache
 	}
@ -46,7 +40,6 @@ func NewObjSelector(registry *ObjRegistry, selectionSize int, kind SelectorKind,
 		filter:    filter,
 		objChan:   make(chan *ObjectInfo, selectionSize*2),
 		cacheSize: selectionSize,
-		kind:      kind,
 	}

 	go objSelector.selectLoop()
@ -62,21 +55,12 @@ func NewObjSelector(registry *ObjRegistry, selectionSize int, kind SelectorKind,
 //   - underlying registry context is done, nil objects will be returned on the
 //     currently blocked and every further NextObject calls.
 func (o *ObjSelector) NextObject() *ObjectInfo {
-	if o.kind == SelectorOneshot {
-		return <-o.objChan
-	}
-
-	select {
-	case <-time.After(nextObjectTimeout):
-		return nil
-	case obj := <-o.objChan:
-		return obj
-	}
+	return <-o.objChan
 }

 // Count returns total number of objects that match filter of the selector.
 func (o *ObjSelector) Count() (int, error) {
-	count := 0
+	var count = 0
 	err := o.boltDB.View(func(tx *bbolt.Tx) error {
 		b := tx.Bucket([]byte(o.filter.Status))
 		if b == nil {
@ -176,23 +160,15 @@ func (o *ObjSelector) selectLoop() {
 			}
 		}

-		if o.kind == SelectorOneshot && len(cache) != o.cacheSize {
-			return
-		}
-
-		if o.kind != SelectorLooped && len(cache) != o.cacheSize {
+		if len(cache) != o.cacheSize {
 			// no more objects, wait a little; the logic could be improved.
 			select {
-			case <-time.After(time.Second):
+			case <-time.After(time.Second * time.Duration(o.filter.Age/2)):
 			case <-o.ctx.Done():
 				return
 			}
 		}

-		if o.kind == SelectorLooped && len(cache) != o.cacheSize {
-			lastID = 0
-		}
-
 		// clean handled objects
 		cache = cache[:0]
 	}
--- a/internal/registry/registry.go
+++ b/internal/registry/registry.go
@ -74,35 +74,7 @@ func (r *Registry) open(dbFilePath string) *ObjRegistry {
 	return registry
 }

-// SelectorKind represents selector behaviour when no items are available.
-type SelectorKind byte
-
-const (
-	// SelectorAwaiting waits for a new item to arrive.
-	// This selector visits each item exactly once and can be used when items
-	// to select are being pushed into registry concurrently.
-	SelectorAwaiting = iota
-	// SelectorLooped rewinds cursor to the start after all items have been read.
-	// It can encounter duplicates and should be used mostly for read scenarious.
-	SelectorLooped
-	// SelectorOneshot visits each item exactly once and exits immediately afterwards.
-	// It may be used to artificially abort the test after all items were processed.
-	SelectorOneshot
-)
-
 func (r *Registry) GetSelector(dbFilePath string, name string, cacheSize int, filter map[string]string) *ObjSelector {
-	return r.getSelectorInternal(dbFilePath, name, cacheSize, SelectorAwaiting, filter)
-}
-
-func (r *Registry) GetLoopedSelector(dbFilePath string, name string, cacheSize int, filter map[string]string) *ObjSelector {
-	return r.getSelectorInternal(dbFilePath, name, cacheSize, SelectorLooped, filter)
-}
-
-func (r *Registry) GetOneshotSelector(dbFilePath string, name string, cacheSize int, filter map[string]string) *ObjSelector {
-	return r.getSelectorInternal(dbFilePath, name, cacheSize, SelectorOneshot, filter)
-}
-
-func (r *Registry) getSelectorInternal(dbFilePath string, name string, cacheSize int, kind SelectorKind, filter map[string]string) *ObjSelector {
 	objFilter, err := parseFilter(filter)
 	if err != nil {
 		panic(err)
@ -114,7 +86,7 @@ func (r *Registry) getSelectorInternal(dbFilePath string, name string, cacheSize
 	selector := r.root.selectors[name]
 	if selector == nil {
 		registry := r.open(dbFilePath)
-		selector = NewObjSelector(registry, cacheSize, kind, objFilter)
+		selector = NewObjSelector(registry, cacheSize, objFilter)
 		r.root.selectors[name] = selector
 	} else if !reflect.DeepEqual(selector.filter, objFilter) {
 		panic(fmt.Sprintf("selector %s already has been created with a different filter", name))
@ -122,10 +94,6 @@ func (r *Registry) getSelectorInternal(dbFilePath string, name string, cacheSize
 	return selector
 }

-func (r *Registry) GetExporter(selector *ObjSelector) *ObjExporter {
-	return NewObjExporter(selector)
-}
-
 func parseFilter(filter map[string]string) (*ObjFilter, error) {
 	objFilter := ObjFilter{}
 	objFilter.Status = filter["status"]
--- a/internal/s3/client.go
+++ b/internal/s3/client.go
@ -1,6 +1,7 @@
 package s3

 import (
+	"bytes"
 	"context"
 	"crypto/sha256"
 	"encoding/hex"
@ -8,12 +9,12 @@ import (
 	"strconv"
 	"time"

-	"git.frostfs.info/TrueCloudLab/xk6-frostfs/internal/datagen"
 	"git.frostfs.info/TrueCloudLab/xk6-frostfs/internal/stats"
 	"github.com/aws/aws-sdk-go-v2/aws"
 	"github.com/aws/aws-sdk-go-v2/feature/s3/manager"
 	"github.com/aws/aws-sdk-go-v2/service/s3"
 	"github.com/aws/aws-sdk-go-v2/service/s3/types"
+	"github.com/dop251/goja"
 	"go.k6.io/k6/js/modules"
 	"go.k6.io/k6/metrics"
 )
@ -50,9 +51,9 @@ type (
 	}
 )

-func (c *Client) Put(bucket, key string, payload datagen.Payload) PutResponse {
-	rdr := payload.Reader()
-	sz := payload.Size()
+func (c *Client) Put(bucket, key string, payload goja.ArrayBuffer) PutResponse {
+	rdr := bytes.NewReader(payload.Bytes())
+	sz := rdr.Size()

 	start := time.Now()
 	_, err := c.cli.PutObject(c.vu.Context(), &s3.PutObjectInput{
@ -65,44 +66,41 @@ func (c *Client) Put(bucket, key string, payload datagen.Payload) PutResponse {
 		return PutResponse{Success: false, Error: err.Error()}
 	}

-	stats.Report(c.vu, objPutSuccess, 1)
+	stats.Report(c.vu, objPutTotal, 1)
 	stats.ReportDataSent(c.vu, float64(sz))
 	stats.Report(c.vu, objPutDuration, metrics.D(time.Since(start)))
-	stats.Report(c.vu, objPutData, float64(sz))
 	return PutResponse{Success: true}
 }

 const multipartUploadMinPartSize = 5 * 1024 * 1024 // 5MB

-func (c *Client) Multipart(bucket, key string, objPartSize, concurrency int, payload datagen.Payload) PutResponse {
+func (c *Client) Multipart(bucket, key string, objPartSize int, payload goja.ArrayBuffer, concurrency int) PutResponse {
 	if objPartSize < multipartUploadMinPartSize {
 		stats.Report(c.vu, objPutFails, 1)
 		return PutResponse{Success: false, Error: fmt.Sprintf("part size '%d' must be greater than '%d'(5 MB)", objPartSize, multipartUploadMinPartSize)}
 	}
-
+	if concurrency < 1 {
+		stats.Report(c.vu, objPutFails, 1)
+		return PutResponse{Success: false, Error: fmt.Sprintf("number of parts to upload in parallel must be greater than 0")}
+	}
 	start := time.Now()
 	uploader := manager.NewUploader(c.cli, func(u *manager.Uploader) {
 		u.PartSize = int64(objPartSize)
 		u.Concurrency = concurrency
 	})
-
-	payloadReader := payload.Reader()
-	sz := payload.Size()
-
 	_, err := uploader.Upload(c.vu.Context(), &s3.PutObjectInput{
 		Bucket: aws.String(bucket),
 		Key:    aws.String(key),
-		Body:   payloadReader,
+		Body:   bytes.NewReader(payload.Bytes()),
 	})
 	if err != nil {
 		stats.Report(c.vu, objPutFails, 1)
 		return PutResponse{Success: false, Error: err.Error()}
 	}
-
-	stats.Report(c.vu, objPutSuccess, 1)
-	stats.ReportDataSent(c.vu, float64(sz))
+	size := len(payload.Bytes())
+	stats.Report(c.vu, objPutTotal, 1)
+	stats.ReportDataSent(c.vu, float64(size))
 	stats.Report(c.vu, objPutDuration, metrics.D(time.Since(start)))
-	stats.Report(c.vu, objPutData, float64(sz))
 	return PutResponse{Success: true}
 }

@ -118,7 +116,7 @@ func (c *Client) Delete(bucket, key string) DeleteResponse {
 		return DeleteResponse{Success: false, Error: err.Error()}
 	}

-	stats.Report(c.vu, objDeleteSuccess, 1)
+	stats.Report(c.vu, objDeleteTotal, 1)
 	stats.Report(c.vu, objDeleteDuration, metrics.D(time.Since(start)))
 	return DeleteResponse{Success: true}
 }
@ -126,7 +124,7 @@ func (c *Client) Delete(bucket, key string) DeleteResponse {
 func (c *Client) Get(bucket, key string) GetResponse {
 	start := time.Now()

-	objSize := 0
+	var objSize = 0
 	err := get(c.cli, bucket, key, func(chunk []byte) {
 		objSize += len(chunk)
 	})
@ -135,10 +133,9 @@ func (c *Client) Get(bucket, key string) GetResponse {
 		return GetResponse{Success: false, Error: err.Error()}
 	}

-	stats.Report(c.vu, objGetSuccess, 1)
+	stats.Report(c.vu, objGetTotal, 1)
 	stats.Report(c.vu, objGetDuration, metrics.D(time.Since(start)))
 	stats.ReportDataReceived(c.vu, float64(objSize))
-	stats.Report(c.vu, objGetData, float64(objSize))
 	return GetResponse{Success: true}
 }

@ -180,7 +177,7 @@ func (c *Client) VerifyHash(bucket, key, expectedHash string) VerifyHashResponse
 	}
 	actualHash := hex.EncodeToString(hasher.Sum(nil))
 	if actualHash != expectedHash {
-		return VerifyHashResponse{Success: false, Error: "hash mismatch"}
+		return VerifyHashResponse{Success: true, Error: "hash mismatch"}
 	}

 	return VerifyHashResponse{Success: true}
@ -215,7 +212,7 @@ func (c *Client) CreateBucket(bucket string, params map[string]string) CreateBuc
 		return CreateBucketResponse{Success: false, Error: err.Error()}
 	}

-	stats.Report(c.vu, createBucketSuccess, 1)
+	stats.Report(c.vu, createBucketTotal, 1)
 	stats.Report(c.vu, createBucketDuration, metrics.D(time.Since(start)))
 	return CreateBucketResponse{Success: true}
 }
--- a/internal/s3/s3.go
+++ b/internal/s3/s3.go
@ -7,7 +7,6 @@ import (
 	"strconv"
 	"time"

-	"git.frostfs.info/TrueCloudLab/xk6-frostfs/internal/stats"
 	"github.com/aws/aws-sdk-go-v2/aws"
 	"github.com/aws/aws-sdk-go-v2/config"
 	"github.com/aws/aws-sdk-go-v2/service/s3"
@ -29,10 +28,10 @@ var (
 	_ modules.Instance = &S3{}
 	_ modules.Module   = &RootModule{}

-	objPutSuccess, objPutFails, objPutDuration, objPutData       *metrics.Metric
-	objGetSuccess, objGetFails, objGetDuration, objGetData       *metrics.Metric
-	objDeleteSuccess, objDeleteFails, objDeleteDuration          *metrics.Metric
-	createBucketSuccess, createBucketFails, createBucketDuration *metrics.Metric
+	objPutTotal, objPutFails, objPutDuration                   *metrics.Metric
+	objGetTotal, objGetFails, objGetDuration                   *metrics.Metric
+	objDeleteTotal, objDeleteFails, objDeleteDuration          *metrics.Metric
+	createBucketTotal, createBucketFails, createBucketDuration *metrics.Metric
 )

 func init() {
@ -95,23 +94,22 @@ func (s *S3) Connect(endpoint string, params map[string]string) (*Client, error)
 	})

 	// register metrics
-	objPutSuccess, _ = stats.Registry.NewMetric("aws_obj_put_success", metrics.Counter)
-	objPutFails, _ = stats.Registry.NewMetric("aws_obj_put_fails", metrics.Counter)
-	objPutDuration, _ = stats.Registry.NewMetric("aws_obj_put_duration", metrics.Trend, metrics.Time)
-	objPutData, _ = stats.Registry.NewMetric("aws_obj_put_bytes", metrics.Counter, metrics.Data)
+	registry := metrics.NewRegistry()
+	objPutTotal, _ = registry.NewMetric("aws_obj_put_total", metrics.Counter)
+	objPutFails, _ = registry.NewMetric("aws_obj_put_fails", metrics.Counter)
+	objPutDuration, _ = registry.NewMetric("aws_obj_put_duration", metrics.Trend, metrics.Time)

-	objGetSuccess, _ = stats.Registry.NewMetric("aws_obj_get_success", metrics.Counter)
-	objGetFails, _ = stats.Registry.NewMetric("aws_obj_get_fails", metrics.Counter)
-	objGetDuration, _ = stats.Registry.NewMetric("aws_obj_get_duration", metrics.Trend, metrics.Time)
-	objGetData, _ = stats.Registry.NewMetric("aws_obj_get_bytes", metrics.Counter, metrics.Data)
+	objGetTotal, _ = registry.NewMetric("aws_obj_get_total", metrics.Counter)
+	objGetFails, _ = registry.NewMetric("aws_obj_get_fails", metrics.Counter)
+	objGetDuration, _ = registry.NewMetric("aws_obj_get_duration", metrics.Trend, metrics.Time)

-	objDeleteSuccess, _ = stats.Registry.NewMetric("aws_obj_delete_success", metrics.Counter)
-	objDeleteFails, _ = stats.Registry.NewMetric("aws_obj_delete_fails", metrics.Counter)
-	objDeleteDuration, _ = stats.Registry.NewMetric("aws_obj_delete_duration", metrics.Trend, metrics.Time)
+	objDeleteTotal, _ = registry.NewMetric("aws_obj_delete_total", metrics.Counter)
+	objDeleteFails, _ = registry.NewMetric("aws_obj_delete_fails", metrics.Counter)
+	objDeleteDuration, _ = registry.NewMetric("aws_obj_delete_duration", metrics.Trend, metrics.Time)

-	createBucketSuccess, _ = stats.Registry.NewMetric("aws_create_bucket_success", metrics.Counter)
-	createBucketFails, _ = stats.Registry.NewMetric("aws_create_bucket_fails", metrics.Counter)
-	createBucketDuration, _ = stats.Registry.NewMetric("aws_create_bucket_duration", metrics.Trend, metrics.Time)
+	createBucketTotal, _ = registry.NewMetric("aws_create_bucket_total", metrics.Counter)
+	createBucketFails, _ = registry.NewMetric("aws_create_bucket_fails", metrics.Counter)
+	createBucketDuration, _ = registry.NewMetric("aws_create_bucket_duration", metrics.Trend, metrics.Time)

 	return &Client{
 		vu:  s.vu,
--- a/internal/s3local/client.go
+++ b/internal/s3local/client.go
@ -1,14 +1,14 @@
 package s3local

 import (
+	"bytes"
 	"time"

 	"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/data"
 	"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/layer"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
-	"git.frostfs.info/TrueCloudLab/xk6-frostfs/internal/datagen"
-	"git.frostfs.info/TrueCloudLab/xk6-frostfs/internal/local"
 	"git.frostfs.info/TrueCloudLab/xk6-frostfs/internal/stats"
+	"github.com/dop251/goja"
 	"go.k6.io/k6/js/modules"
 	"go.k6.io/k6/metrics"
 )
@ -18,13 +18,11 @@ type Client struct {
 	l        layer.Client
 	ownerID  *user.ID
 	resolver layer.BucketResolver
-	limiter  local.Limiter
 }

 type (
 	SuccessOrErrorResponse struct {
 		Success bool
-		Abort   bool
 		Error   string
 	}

@ -34,14 +32,7 @@ type (
 	GetResponse          SuccessOrErrorResponse
 )

-func (c *Client) Put(bucket, key string, payload datagen.Payload) PutResponse {
-	if c.limiter.IsFull() {
-		return PutResponse{
-			Success: false,
-			Abort:   true,
-			Error:   "engine size limit reached",
-		}
-	}
+func (c *Client) Put(bucket, key string, payload goja.ArrayBuffer) PutResponse {
 	cid, err := c.resolver.Resolve(c.vu.Context(), bucket)
 	if err != nil {
 		stats.Report(c.vu, objPutFails, 1)
@ -57,8 +48,8 @@ func (c *Client) Put(bucket, key string, payload datagen.Payload) PutResponse {
 		},
 		Header: map[string]string{},
 		Object: key,
-		Size:   uint64(payload.Size()),
-		Reader: payload.Reader(),
+		Size:   int64(len(payload.Bytes())),
+		Reader: bytes.NewReader(payload.Bytes()),
 	}

 	start := time.Now()
@ -68,9 +59,8 @@ func (c *Client) Put(bucket, key string, payload datagen.Payload) PutResponse {
 	}

 	stats.Report(c.vu, objPutDuration, metrics.D(time.Since(start)))
-	stats.Report(c.vu, objPutSuccess, 1)
+	stats.Report(c.vu, objPutTotal, 1)
 	stats.ReportDataSent(c.vu, float64(prm.Size))
-	stats.Report(c.vu, objPutData, float64(prm.Size))

 	return PutResponse{Success: true}
 }
@ -108,22 +98,16 @@ func (c *Client) Get(bucket, key string) GetResponse {
 			Start: 0,
 			End:   uint64(extInfo.ObjectInfo.Size),
 		},
+		Writer: wr,
 	}
-	objPayload, err := c.l.GetObject(c.vu.Context(), getPrm)
-	if err != nil {
-		stats.Report(c.vu, objGetFails, 1)
-		return GetResponse{Error: err.Error()}
-	}
-	err = objPayload.StreamTo(wr)
-	if err != nil {
+	if err := c.l.GetObject(c.vu.Context(), getPrm); err != nil {
 		stats.Report(c.vu, objGetFails, 1)
 		return GetResponse{Error: err.Error()}
 	}

 	stats.Report(c.vu, objGetDuration, metrics.D(time.Since(start)))
-	stats.Report(c.vu, objGetSuccess, 1)
+	stats.Report(c.vu, objGetTotal, 1)
 	stats.ReportDataReceived(c.vu, wr.total)
-	stats.Report(c.vu, objGetData, wr.total)

 	return GetResponse{Success: true}
 }
--- a/internal/s3local/frostfs.go
+++ b/internal/s3local/frostfs.go
@ -13,6 +13,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/eacl"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/session"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 	"git.frostfs.info/TrueCloudLab/xk6-frostfs/internal/local/rawclient"
 )

@ -29,15 +30,15 @@ func unimplementedMessage(fname string) string {
 		"something other than filling a cluster (i.e. PUT or GET).", fname)
 }

-func (*frostfs) CreateContainer(context.Context, layer.PrmContainerCreate) (*layer.ContainerCreateResult, error) {
+func (*frostfs) CreateContainer(context.Context, layer.PrmContainerCreate) (cid.ID, error) {
 	panic(unimplementedMessage("CreateContainer"))
 }

-func (*frostfs) Container(ctx context.Context, prmContainer layer.PrmContainer) (*container.Container, error) {
+func (*frostfs) Container(context.Context, cid.ID) (*container.Container, error) {
 	panic(unimplementedMessage("Container"))
 }

-func (*frostfs) UserContainers(ctx context.Context, containers layer.PrmUserContainers) ([]cid.ID, error) {
+func (*frostfs) UserContainers(context.Context, user.ID) ([]cid.ID, error) {
 	panic(unimplementedMessage("UserContainers"))
 }

@ -45,7 +46,7 @@ func (*frostfs) SetContainerEACL(context.Context, eacl.Table, *session.Container
 	panic(unimplementedMessage("SetContainerEACL"))
 }

-func (*frostfs) ContainerEACL(ctx context.Context, containerEACL layer.PrmContainerEACL) (*eacl.Table, error) {
+func (*frostfs) ContainerEACL(context.Context, cid.ID) (*eacl.Table, error) {
 	panic(unimplementedMessage("ContainerEACL"))
 }

@ -77,7 +78,7 @@ func (f *frostfs) CreateObject(ctx context.Context, prm layer.PrmObjectCreate) (
 	for _, attr := range prm.Attributes {
 		hdrs[attr[0]] = attr[1]
 	}
-	return f.Put(ctx, prm.Container, nil, hdrs, payload)
+	return f.Put(ctx, prm.Container, &prm.Creator, hdrs, payload)
 }

 func (f *frostfs) DeleteObject(context.Context, layer.PrmObjectDelete) error {
@ -87,7 +88,3 @@ func (f *frostfs) DeleteObject(context.Context, layer.PrmObjectDelete) error {
 func (f *frostfs) TimeToEpoch(ctx context.Context, now time.Time, future time.Time) (uint64, uint64, error) {
 	panic(unimplementedMessage("TimeToEpoch"))
 }
-
-func (f *frostfs) SearchObjects(ctx context.Context, search layer.PrmObjectSearch) ([]oid.ID, error) {
-	panic(unimplementedMessage("SearchObjects"))
-}
--- a/internal/s3local/local.go
+++ b/internal/s3local/local.go
@ -32,10 +32,10 @@ var (
 	_ modules.Module   = &RootModule{}
 	_ modules.Instance = &Local{}

-	internalObjPutSuccess, internalObjPutFails, internalObjPutDuration, internalObjPutData *metrics.Metric
-	internalObjGetSuccess, internalObjGetFails, internalObjGetDuration, internalObjGetData *metrics.Metric
-	objPutSuccess, objPutFails, objPutDuration, objPutData                                 *metrics.Metric
-	objGetSuccess, objGetFails, objGetDuration, objGetData                                 *metrics.Metric
+	internalObjPutTotal, internalObjPutFails, internalObjPutDuration *metrics.Metric
+	internalObjGetTotal, internalObjGetFails, internalObjGetDuration *metrics.Metric
+	objPutTotal, objPutFails, objPutDuration                         *metrics.Metric
+	objGetTotal, objGetFails, objGetDuration                         *metrics.Metric
 )

 func init() {
@ -56,7 +56,7 @@ func (s *Local) Exports() modules.Exports {
 	return modules.Exports{Default: s}
 }

-func (s *Local) Connect(configFile string, configDir string, params map[string]string, bucketMapping map[string]string, maxSizeGB int64) (*Client, error) {
+func (s *Local) Connect(configFile string, params map[string]string, bucketMapping map[string]string) (*Client, error) {
 	// Parse configuration flags.
 	fs := flag.NewFlagSet("s3local", flag.ContinueOnError)

@ -88,30 +88,28 @@ func (s *Local) Connect(configFile string, configDir string, params map[string]s
 	}

 	// Register metrics.
-	internalObjPutSuccess, _ = stats.Registry.NewMetric("s3local_internal_obj_put_success", metrics.Counter)
-	internalObjPutFails, _ = stats.Registry.NewMetric("s3local_internal_obj_put_fails", metrics.Counter)
-	internalObjPutDuration, _ = stats.Registry.NewMetric("s3local_internal_obj_put_duration", metrics.Trend, metrics.Time)
-	internalObjPutData, _ = stats.Registry.NewMetric("s3local_internal_obj_put_bytes", metrics.Counter, metrics.Data)
+	registry := metrics.NewRegistry()

-	internalObjGetSuccess, _ = stats.Registry.NewMetric("s3local_internal_obj_get_success", metrics.Counter)
-	internalObjGetFails, _ = stats.Registry.NewMetric("s3local_internal_obj_get_fails", metrics.Counter)
-	internalObjGetDuration, _ = stats.Registry.NewMetric("s3local_internal_obj_get_duration", metrics.Trend, metrics.Time)
-	internalObjGetData, _ = stats.Registry.NewMetric("s3local_internal_obj_get_bytes", metrics.Counter, metrics.Data)
+	internalObjPutTotal, _ = registry.NewMetric("s3local_internal_obj_put_total", metrics.Counter)
+	internalObjPutFails, _ = registry.NewMetric("s3local_internal_obj_put_fails", metrics.Counter)
+	internalObjPutDuration, _ = registry.NewMetric("s3local_internal_obj_put_duration", metrics.Trend, metrics.Time)

-	objPutSuccess, _ = stats.Registry.NewMetric("s3local_obj_put_success", metrics.Counter)
-	objPutFails, _ = stats.Registry.NewMetric("s3local_obj_put_fails", metrics.Counter)
-	objPutDuration, _ = stats.Registry.NewMetric("s3local_obj_put_duration", metrics.Trend, metrics.Time)
-	objPutData, _ = stats.Registry.NewMetric("s3local_obj_put_bytes", metrics.Counter, metrics.Data)
+	internalObjGetTotal, _ = registry.NewMetric("s3local_internal_obj_get_total", metrics.Counter)
+	internalObjGetFails, _ = registry.NewMetric("s3local_internal_obj_get_fails", metrics.Counter)
+	internalObjGetDuration, _ = registry.NewMetric("s3local_internal_obj_get_duration", metrics.Trend, metrics.Time)

-	objGetSuccess, _ = stats.Registry.NewMetric("s3local_obj_get_success", metrics.Counter)
-	objGetFails, _ = stats.Registry.NewMetric("s3local_obj_get_fails", metrics.Counter)
-	objGetDuration, _ = stats.Registry.NewMetric("s3local_obj_get_duration", metrics.Trend, metrics.Time)
-	objGetData, _ = stats.Registry.NewMetric("s3local_obj_get_bytes", metrics.Counter, metrics.Data)
+	objPutTotal, _ = registry.NewMetric("s3local_obj_put_total", metrics.Counter)
+	objPutFails, _ = registry.NewMetric("s3local_obj_put_fails", metrics.Counter)
+	objPutDuration, _ = registry.NewMetric("s3local_obj_put_duration", metrics.Trend, metrics.Time)
+
+	objGetTotal, _ = registry.NewMetric("s3local_obj_get_total", metrics.Counter)
+	objGetFails, _ = registry.NewMetric("s3local_obj_get_fails", metrics.Counter)
+	objGetDuration, _ = registry.NewMetric("s3local_obj_get_duration", metrics.Trend, metrics.Time)

 	// Create S3 layer backed by local storage engine and tree service.
-	ng, limiter, err := s.l.ResolveEngine(s.l.VU().Context(), configFile, configDir, *debugLogger, maxSizeGB)
+	ng, err := s.l.ResolveEngine(s.l.VU().Context(), configFile, *debugLogger)
 	if err != nil {
-		return nil, fmt.Errorf("connecting to engine for config - file %q dir %q: %v", configFile, configDir, err)
+		return nil, fmt.Errorf("connecting to engine for config %q: %v", configFile, err)
 	}

 	treeSvc := tree.NewTree(treeServiceEngineWrapper{
@ -126,18 +124,16 @@ func (s *Local) Connect(configFile string, configDir string, params map[string]s
 			if err != nil {
 				stats.Report(s.l.VU(), internalObjPutFails, 1)
 			} else {
-				stats.Report(s.l.VU(), internalObjPutSuccess, 1)
+				stats.Report(s.l.VU(), internalObjPutTotal, 1)
 				stats.Report(s.l.VU(), internalObjPutDuration, metrics.D(dt))
-				stats.Report(s.l.VU(), internalObjPutData, float64(sz))
 			}
 		}),
 		rawclient.WithGetHandler(func(sz uint64, err error, dt time.Duration) {
 			if err != nil {
 				stats.Report(s.l.VU(), internalObjGetFails, 1)
 			} else {
-				stats.Report(s.l.VU(), internalObjGetSuccess, 1)
+				stats.Report(s.l.VU(), internalObjGetTotal, 1)
 				stats.Report(s.l.VU(), internalObjGetDuration, metrics.D(dt))
-				stats.Report(s.l.VU(), internalObjGetData, float64(sz))
 			}
 		}),
 	)
@ -148,24 +144,20 @@ func (s *Local) Connect(configFile string, configDir string, params map[string]s
 	}

 	cfg := &layer.Config{
-		Cache:       layer.NewCache(layer.DefaultCachesConfigs(zap.L())),
+		Caches:      layer.DefaultCachesConfigs(zap.L()),
 		AnonKey:     layer.AnonymousKey{Key: key},
 		Resolver:    resolver,
 		TreeService: treeSvc,
 	}

 	l := layer.NewLayer(zap.L(), &frostfs{rc}, cfg)
-	err = l.Initialize(s.l.VU().Context(), nopEventListener{})
-	if err != nil {
-		return nil, fmt.Errorf("initialize: %w", err)
-	}
+	l.Initialize(s.l.VU().Context(), nopEventListener{})

 	return &Client{
 		vu:       s.l.VU(),
 		l:        l,
 		ownerID:  rc.OwnerID(),
 		resolver: resolver,
-		limiter:  limiter,
 	}, nil
 }

--- a/internal/s3local/treeService.go
+++ b/internal/s3local/treeService.go
@ -115,7 +115,7 @@ func (s treeServiceEngineWrapper) GetSubTree(ctx context.Context, bktInfo *data.
 			return fmt.Errorf("getting children: %v", err)
 		}
 		for _, child := range children {
-			if err := traverse(child.ID, curDepth+1); err != nil {
+			if err := traverse(child, curDepth+1); err != nil {
 				return err
 			}
 		}
@ -191,12 +191,6 @@ func (s treeServiceEngineWrapper) RemoveNode(ctx context.Context, bktInfo *data.
 	return err
 }

-func (s treeServiceEngineWrapper) GetSubTreeStream(
-	ctx context.Context, bktInfo *data.BucketInfo, treeID string, rootID uint64, depth uint32,
-) (tree.SubTreeStream, error) {
-	panic(unimplementedMessage("TreeService.GetSubTreeStream"))
-}
-
 func mapToKV(m map[string]string) []pilorama.KeyValue {
 	var kvs []pilorama.KeyValue
 	for k, v := range m {
--- a/internal/stats/stats.go
+++ b/internal/stats/stats.go
@ -1,54 +1,16 @@
 package stats

 import (
-	"strings"
 	"time"

 	"go.k6.io/k6/js/modules"
 	"go.k6.io/k6/metrics"
 )

-// RootModule is the global module object type. It is instantiated once per test
-// run and will be used to create k6/x/frostfs/stats module instances for each VU.
-type RootModule struct {
-	Instance string
-}
-
-var (
-	tagSet *metrics.TagSet
-
-	Registry *metrics.Registry
-)
-
-func init() {
-	Registry = metrics.NewRegistry()
-	tagSet = Registry.RootTagSet()
-	modules.Register("k6/x/frostfs/stats", &RootModule{})
-}
-
-// SetTags sets additional tags to custom metrics.
-// Format: "key1:value1;key2:value2".
-// Panics if input has invalid format.
-func (m *RootModule) SetTags(labels string) {
-	kv := make(map[string]string)
-	pairs := strings.Split(labels, ";")
-	for _, pair := range pairs {
-		items := strings.Split(pair, ":")
-		if len(items) != 2 {
-			panic("invalid labels format")
-		}
-		kv[strings.TrimSpace(items[0])] = strings.TrimSpace(items[1])
-	}
-	for k, v := range kv {
-		tagSet = tagSet.With(k, v)
-	}
-}
-
 func Report(vu modules.VU, metric *metrics.Metric, value float64) {
 	metrics.PushIfNotDone(vu.Context(), vu.State().Samples, metrics.Sample{
 		TimeSeries: metrics.TimeSeries{
 			Metric: metric,
-			Tags:   tagSet,
 		},
 		Time:  time.Now(),
 		Value: value,
@ -60,11 +22,9 @@ func ReportDataReceived(vu modules.VU, value float64) {
 		metrics.Sample{
 			TimeSeries: metrics.TimeSeries{
 				Metric: &metrics.Metric{},
-				Tags:   tagSet,
 			},
 			Value: value,
-			Time:  time.Now(),
-		},
+			Time:  time.Now()},
 	)
 }

@ -74,10 +34,8 @@ func ReportDataSent(vu modules.VU, value float64) {
 		metrics.Sample{
 			TimeSeries: metrics.TimeSeries{
 				Metric: &metrics.Metric{},
-				Tags:   tagSet,
 			},
 			Value: value,
-			Time:  time.Now(),
-		},
+			Time:  time.Now()},
 	)
 }
--- a/internal/version/version.go
+++ b/internal/version/version.go
@ -1,6 +0,0 @@
-package version
-
-var (
-	// Version is the xk6 command-line utils version.
-	Version = "dev"
-)
--- a/scenarios/grpc.js
+++ b/scenarios/grpc.js
@ -1,222 +1,177 @@
-import { sleep } from 'k6';
-import { SharedArray } from 'k6/data';
-import exec from 'k6/execution';
-import logging from 'k6/x/frostfs/logging';
+import datagen from 'k6/x/frostfs/datagen';
 import native from 'k6/x/frostfs/native';
+import logging from 'k6/x/frostfs/logging';
 import registry from 'k6/x/frostfs/registry';
-import stats from 'k6/x/frostfs/stats';
-
-import { newGenerator } from './libs/datagen.js';
-import { parseEnv } from './libs/env-parser.js';
+import { SharedArray } from 'k6/data';
+import { sleep } from 'k6';
 import { textSummary } from './libs/k6-summary-0.0.2.js';
+import { parseEnv } from './libs/env-parser.js';
 import { uuidv4 } from './libs/k6-utils-1.4.0.js';

 parseEnv();

-const obj_list = new SharedArray(
-  'obj_list',
-  function () { return JSON.parse(open(__ENV.PREGEN_JSON)).objects; });
+const obj_list = new SharedArray('obj_list', function () {
+    return JSON.parse(open(__ENV.PREGEN_JSON)).objects;
+});

-const container_list = new SharedArray(
-  'container_list',
-  function () { return JSON.parse(open(__ENV.PREGEN_JSON)).containers; });
+const container_list = new SharedArray('container_list', function () {
+    return JSON.parse(open(__ENV.PREGEN_JSON)).containers;
+});

 const read_size = JSON.parse(open(__ENV.PREGEN_JSON)).obj_size;
-const summary_json = __ENV.SUMMARY_JSON || '/tmp/summary.json';
+const summary_json = __ENV.SUMMARY_JSON || "/tmp/summary.json";

 // Select random gRPC endpoint for current VU
 const grpc_endpoints = __ENV.GRPC_ENDPOINTS.split(',');
-const grpc_endpoint =
-  grpc_endpoints[Math.floor(Math.random() * grpc_endpoints.length)];
-const grpc_client = native.connect(
-  grpc_endpoint, '', __ENV.DIAL_TIMEOUT ? parseInt(__ENV.DIAL_TIMEOUT) : 5,
-  __ENV.STREAM_TIMEOUT ? parseInt(__ENV.STREAM_TIMEOUT) : 60,
-  __ENV.PREPARE_LOCALLY ? __ENV.PREPARE_LOCALLY.toLowerCase() === 'true' : false,
-  1024 * parseInt(__ENV.MAX_OBJECT_SIZE || '0'));
-const log = logging.new().withField('endpoint', grpc_endpoint);
+const grpc_endpoint = grpc_endpoints[Math.floor(Math.random() * grpc_endpoints.length)];
+const grpc_client = native.connect(grpc_endpoint, '',
+    __ENV.DIAL_TIMEOUT ? parseInt(__ENV.DIAL_TIMEOUT) : 5,
+    __ENV.STREAM_TIMEOUT ? parseInt(__ENV.STREAM_TIMEOUT) : 60,
+    __ENV.PREPARE_LOCALLY ? __ENV.PREPARE_LOCALLY.toLowerCase() === "true" : false);
+const log = logging.new().withField("endpoint", grpc_endpoint);

 const registry_enabled = !!__ENV.REGISTRY_FILE;
-const obj_registry =
-  registry_enabled ? registry.open(__ENV.REGISTRY_FILE) : undefined;
+const obj_registry = registry_enabled ? registry.open(__ENV.REGISTRY_FILE) : undefined;

 const duration = __ENV.DURATION;

-if (!!__ENV.METRIC_TAGS) {
-  stats.setTags(__ENV.METRIC_TAGS)
+const delete_age = __ENV.DELETE_AGE ? parseInt(__ENV.DELETE_AGE) : undefined;
+let obj_to_delete_selector = undefined;
+if (registry_enabled && delete_age) {
+    obj_to_delete_selector = registry.getSelector(
+        __ENV.REGISTRY_FILE,
+        "obj_to_delete",
+        __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0,
+        {
+            status: "created",
+            age: delete_age,
+        }
+    );
 }

-const read_age = __ENV.READ_AGE ? parseInt(__ENV.READ_AGE) : 10;
-let obj_to_read_selector = undefined;
-if (registry_enabled) {
-  obj_to_read_selector = registry.getLoopedSelector(
-    __ENV.REGISTRY_FILE, 'obj_to_read',
-    __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0, {
-    status: 'created',
-    age: read_age,
-  })
-}
+
+const generator = datagen.generator(1024 * parseInt(__ENV.WRITE_OBJ_SIZE), __ENV.PAYLOAD_TYPE || "");

 const scenarios = {};

 const write_vu_count = parseInt(__ENV.WRITERS || '0');
 const write_grpc_chunk_size = 1024 * parseInt(__ENV.GRPC_CHUNK_SIZE || '0')
-const generator = newGenerator(write_vu_count > 0);
 if (write_vu_count > 0) {
-  scenarios.write = {
-    executor: 'constant-vus',
-    vus: write_vu_count,
-    duration: `${duration}s`,
-    exec: 'obj_write',
-    gracefulStop: '5s',
-  };
-}
-
-const delete_age = __ENV.DELETE_AGE ? parseInt(__ENV.DELETE_AGE) : undefined;
-let obj_to_delete_selector = undefined;
-let obj_to_delete_exit_on_null = undefined;
-if (registry_enabled && delete_age) {
-  obj_to_delete_exit_on_null = write_vu_count == 0;
-
-  let constructor = obj_to_delete_exit_on_null ? registry.getOneshotSelector
-    : registry.getSelector;
-
-  obj_to_delete_selector =
-    constructor(__ENV.REGISTRY_FILE, 'obj_to_delete',
-      __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0, {
-      status: 'created',
-      age: delete_age,
-    });
+    scenarios.write = {
+        executor: 'constant-vus',
+        vus: write_vu_count,
+        duration: `${duration}s`,
+        exec: 'obj_write', 
+        gracefulStop: '5s',
+    };
 }

 const read_vu_count = parseInt(__ENV.READERS || '0');
 if (read_vu_count > 0) {
-  scenarios.read = {
-    executor: 'constant-vus',
-    vus: read_vu_count,
-    duration: `${duration}s`,
-    exec: 'obj_read',
-    gracefulStop: '5s',
-  };
+    scenarios.read = {
+        executor: 'constant-vus',
+        vus: read_vu_count,
+        duration: `${duration}s`,
+        exec: 'obj_read', 
+        gracefulStop: '5s',
+    };
 }

 const delete_vu_count = parseInt(__ENV.DELETERS || '0');
 if (delete_vu_count > 0) {
-  if (!obj_to_delete_selector) {
-    throw new Error(
-      'Positive DELETE worker number without a proper object selector');
-  }
+    if (!obj_to_delete_selector) {
+        throw new Error('Positive DELETE worker number without a proper object selector');
+    }

-  scenarios.delete = {
-    executor: 'constant-vus',
-    vus: delete_vu_count,
-    duration: `${duration}s`,
-    exec: 'obj_delete',
-    gracefulStop: '5s',
-  };
+    scenarios.delete = {
+        executor: 'constant-vus',
+        vus: delete_vu_count,
+        duration: `${duration}s`,
+        exec: 'obj_delete', 
+        gracefulStop: '5s',
+    };
 }

 export const options = {
-  scenarios,
-  setupTimeout: '5s',
+    scenarios,
+    setupTimeout: '5s',
 };

 export function setup() {
-  const total_vu_count = write_vu_count + read_vu_count + delete_vu_count;
+    const total_vu_count = write_vu_count + read_vu_count + delete_vu_count;

-  console.log(`Pregenerated containers:       ${container_list.length}`);
-  console.log(`Pregenerated read object size: ${read_size}`);
-  console.log(`Pregenerated total objects:    ${obj_list.length}`);
-  console.log(`Reading VUs:                   ${read_vu_count}`);
-  console.log(`Writing VUs:                   ${write_vu_count}`);
-  console.log(`Deleting VUs:                  ${delete_vu_count}`);
-  console.log(`Total VUs:                     ${total_vu_count}`);
-
-  const start_timestamp = Date.now()
-  console.log(
-    `Load started at:               ${Date(start_timestamp).toString()}`)
+    console.log(`Pregenerated containers:       ${container_list.length}`);
+    console.log(`Pregenerated read object size: ${read_size}`);
+    console.log(`Pregenerated total objects:    ${obj_list.length}`);
+    console.log(`Reading VUs:                   ${read_vu_count}`);
+    console.log(`Writing VUs:                   ${write_vu_count}`);
+    console.log(`Deleting VUs:                  ${delete_vu_count}`);
+    console.log(`Total VUs:                     ${total_vu_count}`);
 }

 export function teardown(data) {
-  if (obj_registry) {
-    obj_registry.close();
-  }
-  const end_timestamp = Date.now()
-  console.log(
-    `Load finished at:              ${Date(end_timestamp).toString()}`)
+    if (obj_registry) {
+        obj_registry.close();
+    }
 }

 export function handleSummary(data) {
-  return {
-    'stdout': textSummary(data, { indent: ' ', enableColors: false }),
-    [summary_json]: JSON.stringify(data),
-  };
+    return {
+        'stdout': textSummary(data, { indent: ' ', enableColors: false }),
+        [summary_json]: JSON.stringify(data),
+    };
 }

 export function obj_write() {
-  if (__ENV.SLEEP_WRITE) {
-    sleep(__ENV.SLEEP_WRITE);
-  }
+    if (__ENV.SLEEP_WRITE) {
+        sleep(__ENV.SLEEP_WRITE);
+    }

-  const headers = { unique_header: uuidv4() };
-  const container =
-    container_list[Math.floor(Math.random() * container_list.length)];
+    const headers = {
+        unique_header: uuidv4()
+    };
+    const container = container_list[Math.floor(Math.random() * container_list.length)];

-  const payload = generator.genPayload();
-  const resp =
-    grpc_client.put(container, headers, payload, write_grpc_chunk_size);
-  if (!resp.success) {
-    log.withField('cid', container).error(resp.error);
-    return;
-  }
+    const { payload, hash } = generator.genPayload(registry_enabled);
+    const resp = grpc_client.put(container, headers, payload, write_grpc_chunk_size);
+    if (!resp.success) {
+        log.withField("cid", container).error(resp.error);
+        return;
+    }

-  if (obj_registry) {
-    obj_registry.addObject(container, resp.object_id, '', '', payload.hash());
-  }
+    if (obj_registry) {
+        obj_registry.addObject(container, resp.object_id, "", "", hash);
+    }
 }

 export function obj_read() {
-  if (__ENV.SLEEP_READ) {
-    sleep(__ENV.SLEEP_READ);
-  }
-
-  if (obj_to_read_selector) {
-    const obj = obj_to_read_selector.nextObject();
-    if (!obj) {
-      return;
+    if (__ENV.SLEEP_READ) {
+        sleep(__ENV.SLEEP_READ);
    }
-    const resp = grpc_client.get(obj.c_id, obj.o_id)
+
+    const obj = obj_list[Math.floor(Math.random() * obj_list.length)];
+    const resp = grpc_client.get(obj.container, obj.object)
    if (!resp.success) {
-      log.withFields({ cid: obj.c_id, oid: obj.o_id }).error(resp.error);
+        log.withFields({cid: obj.container, oid: obj.object}).error(resp.error);
    }
-    return
-  }
-
-  const obj = obj_list[Math.floor(Math.random() * obj_list.length)];
-  const resp = grpc_client.get(obj.container, obj.object)
-  if (!resp.success) {
-    log.withFields({ cid: obj.container, oid: obj.object }).error(resp.error);
-  }
 }

 export function obj_delete() {
-  if (__ENV.SLEEP_DELETE) {
-    sleep(__ENV.SLEEP_DELETE);
-  }
-
-  const obj = obj_to_delete_selector.nextObject();
-  if (!obj) {
-    if (obj_to_delete_exit_on_null) {
-      exec.test.abort("No more objects to select");
+    if (__ENV.SLEEP_DELETE) {
+        sleep(__ENV.SLEEP_DELETE);
    }
-    return;
-  }

-  const resp = grpc_client.delete(obj.c_id, obj.o_id);
-  if (!resp.success) {
-    // Log errors except (2052 - object already deleted)
-    log.withFields({ cid: obj.c_id, oid: obj.o_id }).error(resp.error);
-    return;
-  }
+    const obj = obj_to_delete_selector.nextObject();
+    if (!obj) {
+        return;
+    }

-  obj_registry.deleteObject(obj.id);
+    const resp = grpc_client.delete(obj.c_id, obj.o_id);
+    if (!resp.success) {
+        // Log errors except (2052 - object already deleted)
+        log.withFields({cid: obj.c_id, oid: obj.o_id}).error(resp.error);
+        return;
+    }
+
+    obj_registry.deleteObject(obj.id);
 }
--- a/scenarios/grpc_car.js
+++ b/scenarios/grpc_car.js
@ -1,70 +1,56 @@
-import { sleep } from 'k6';
-import { SharedArray } from 'k6/data';
-import logging from 'k6/x/frostfs/logging';
+import datagen from 'k6/x/frostfs/datagen';
 import native from 'k6/x/frostfs/native';
+import logging from 'k6/x/frostfs/logging';
 import registry from 'k6/x/frostfs/registry';
-import stats from 'k6/x/frostfs/stats';
-
-import { newGenerator } from './libs/datagen.js';
-import { parseEnv } from './libs/env-parser.js';
+import { SharedArray } from 'k6/data';
+import { sleep } from 'k6';
 import { textSummary } from './libs/k6-summary-0.0.2.js';
+import { parseEnv } from './libs/env-parser.js';
 import { uuidv4 } from './libs/k6-utils-1.4.0.js';

 parseEnv();

 const obj_list = new SharedArray('obj_list', function () {
-  return JSON.parse(open(__ENV.PREGEN_JSON)).objects;
+    return JSON.parse(open(__ENV.PREGEN_JSON)).objects;
 });

 const container_list = new SharedArray('container_list', function () {
-  return JSON.parse(open(__ENV.PREGEN_JSON)).containers;
+    return JSON.parse(open(__ENV.PREGEN_JSON)).containers;
 });

 const read_size = JSON.parse(open(__ENV.PREGEN_JSON)).obj_size;
-const summary_json = __ENV.SUMMARY_JSON || '/tmp/summary.json';
+const summary_json = __ENV.SUMMARY_JSON || "/tmp/summary.json";

 // Select random gRPC endpoint for current VU
 const grpc_endpoints = __ENV.GRPC_ENDPOINTS.split(',');
-const grpc_endpoint =
-  grpc_endpoints[Math.floor(Math.random() * grpc_endpoints.length)];
-const grpc_client = native.connect(
-  grpc_endpoint, '', __ENV.DIAL_TIMEOUT ? parseInt(__ENV.DIAL_TIMEOUT) : 5,
-  __ENV.STREAM_TIMEOUT ? parseInt(__ENV.STREAM_TIMEOUT) : 60,
-  __ENV.PREPARE_LOCALLY ? __ENV.PREPARE_LOCALLY.toLowerCase() === 'true' : false,
-  1024 * parseInt(__ENV.MAX_OBJECT_SIZE || '0'));
-const log = logging.new().withField('endpoint', grpc_endpoint);
+const grpc_endpoint = grpc_endpoints[Math.floor(Math.random() * grpc_endpoints.length)];
+const grpc_client = native.connect(grpc_endpoint, '',
+    __ENV.DIAL_TIMEOUT ? parseInt(__ENV.DIAL_TIMEOUT) : 5,
+    __ENV.STREAM_TIMEOUT ? parseInt(__ENV.STREAM_TIMEOUT) : 60,
+    __ENV.PREPARE_LOCALLY ? __ENV.PREPARE_LOCALLY.toLowerCase() === "true" : false);
+const log = logging.new().withField("endpoint", grpc_endpoint);

 const registry_enabled = !!__ENV.REGISTRY_FILE;
-const obj_registry =
-  registry_enabled ? registry.open(__ENV.REGISTRY_FILE) : undefined;
+const obj_registry = registry_enabled ? registry.open(__ENV.REGISTRY_FILE) : undefined;

 const duration = __ENV.DURATION;

-if (!!__ENV.METRIC_TAGS) {
-  stats.setTags(__ENV.METRIC_TAGS)
-}
-
 const delete_age = __ENV.DELETE_AGE ? parseInt(__ENV.DELETE_AGE) : undefined;
 let obj_to_delete_selector = undefined;
 if (registry_enabled && delete_age) {
-  obj_to_delete_selector = registry.getSelector(
-    __ENV.REGISTRY_FILE, 'obj_to_delete',
-    __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0, {
-    status: 'created',
-    age: delete_age,
-  });
+    obj_to_delete_selector = registry.getSelector(
+        __ENV.REGISTRY_FILE,
+        "obj_to_delete",
+        __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0,
+        {
+            status: "created",
+            age: delete_age,
+        }
+    );
 }

-const read_age = __ENV.READ_AGE ? parseInt(__ENV.READ_AGE) : 10;
-let obj_to_read_selector = undefined;
-if (registry_enabled) {
-  obj_to_read_selector = registry.getLoopedSelector(
-    __ENV.REGISTRY_FILE, 'obj_to_read',
-    __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0, {
-    status: 'created',
-    age: read_age,
-  })
-}
+
+const generator = datagen.generator(1024 * parseInt(__ENV.WRITE_OBJ_SIZE));

 const scenarios = {};

@ -73,166 +59,144 @@ const pre_alloc_write_vus = parseInt(__ENV.PRE_ALLOC_WRITERS || '0');
 const max_write_vus = parseInt(__ENV.MAX_WRITERS || pre_alloc_write_vus);
 const write_rate = parseInt(__ENV.WRITE_RATE || '0');
 const write_grpc_chunk_size = 1024 * parseInt(__ENV.GRPC_CHUNK_SIZE || '0')
-const generator = newGenerator(write_rate > 0);
 if (write_rate > 0) {
-  scenarios.write = {
-    executor: 'constant-arrival-rate',
-    duration: `${duration}s`,
-    preAllocatedVUs: pre_alloc_write_vus,
-    maxVUs: max_write_vus,
-    rate: write_rate,
-    timeUnit: time_unit,
-    exec: 'obj_write',
-    gracefulStop: '5s',
-  };
+    scenarios.write = {
+        executor: 'constant-arrival-rate',
+        duration: `${duration}s`,
+        preAllocatedVUs: pre_alloc_write_vus,
+        maxVUs: max_write_vus,
+        rate: write_rate,
+        timeUnit: time_unit,
+        exec: 'obj_write', 
+        gracefulStop: '5s',
+    };
 }

 const pre_alloc_read_vus = parseInt(__ENV.PRE_ALLOC_READERS || '0');
 const max_read_vus = parseInt(__ENV.MAX_READERS || pre_alloc_read_vus);
 const read_rate = parseInt(__ENV.READ_RATE || '0');
 if (read_rate > 0) {
-  scenarios.read = {
-    executor: 'constant-arrival-rate',
-    duration: `${duration}s`,
-    preAllocatedVUs: pre_alloc_write_vus,
-    maxVUs: max_read_vus,
-    rate: read_rate,
-    timeUnit: time_unit,
-    exec: 'obj_read',
-    gracefulStop: '5s',
-  };
+    scenarios.read = {
+        executor: 'constant-arrival-rate',
+        duration: `${duration}s`,
+        preAllocatedVUs: pre_alloc_write_vus,
+        maxVUs: max_read_vus,
+        rate: read_rate,
+        timeUnit: time_unit,
+        exec: 'obj_read', 
+        gracefulStop: '5s',
+    };
 }

 const pre_alloc_delete_vus = parseInt(__ENV.PRE_ALLOC_DELETERS || '0');
 const max_delete_vus = parseInt(__ENV.MAX_DELETERS || pre_alloc_write_vus);
 const delete_rate = parseInt(__ENV.DELETE_RATE || '0');
 if (delete_rate > 0) {
-  if (!obj_to_delete_selector) {
-    throw new Error(
-      'Positive DELETE worker number without a proper object selector');
-  }
+    if (!obj_to_delete_selector) {
+        throw new Error('Positive DELETE worker number without a proper object selector');
+    }

-  scenarios.delete = {
-    executor: 'constant-arrival-rate',
-    duration: `${duration}s`,
-    preAllocatedVUs: pre_alloc_delete_vus,
-    maxVUs: max_delete_vus,
-    rate: delete_rate,
-    timeUnit: time_unit,
-    exec: 'obj_delete',
-    gracefulStop: '5s',
-  };
+    scenarios.delete = {
+        executor: 'constant-arrival-rate',
+        duration: `${duration}s`,
+        preAllocatedVUs: pre_alloc_delete_vus,
+        maxVUs: max_delete_vus,
+        rate: delete_rate,
+        timeUnit: time_unit,
+        exec: 'obj_delete', 
+        gracefulStop: '5s',
+    };
 }

 export const options = {
-  scenarios,
-  setupTimeout: '5s',
+    scenarios,
+    setupTimeout: '5s',
 };

 export function setup() {
-  const total_pre_allocated_vu_count =
-    pre_alloc_write_vus + pre_alloc_read_vus + pre_alloc_delete_vus;
-  const total_max_vu_count = max_read_vus + max_write_vus + max_delete_vus
+    const total_pre_allocated_vu_count = pre_alloc_write_vus + pre_alloc_read_vus + pre_alloc_delete_vus;
+    const total_max_vu_count = max_read_vus + max_write_vus + max_delete_vus

-  console.log(`Pregenerated containers:       ${container_list.length}`);
-  console.log(`Pregenerated read object size: ${read_size}`);
-  console.log(`Pregenerated total objects:    ${obj_list.length}`);
-  console.log(`Pre allocated reading VUs:     ${pre_alloc_read_vus}`);
-  console.log(`Pre allocated writing VUs:     ${pre_alloc_write_vus}`);
-  console.log(`Pre allocated deleting VUs:    ${pre_alloc_delete_vus}`);
-  console.log(`Total pre allocated VUs:       ${total_pre_allocated_vu_count}`);
-  console.log(`Max reading VUs:               ${max_read_vus}`);
-  console.log(`Max writing VUs:               ${max_write_vus}`);
-  console.log(`Max deleting VUs:              ${max_delete_vus}`);
-  console.log(`Total max VUs:                 ${total_max_vu_count}`);
-  console.log(`Time unit:                     ${time_unit}`);
-  console.log(`Read rate:                     ${read_rate}`);
-  console.log(`Writing rate:                  ${write_rate}`);
-  console.log(`Delete rate:                   ${delete_rate}`);
-
-  const start_timestamp = Date.now()
-  console.log(
-    `Load started at:               ${Date(start_timestamp).toString()}`)
+    console.log(`Pregenerated containers:       ${container_list.length}`);
+    console.log(`Pregenerated read object size: ${read_size}`);
+    console.log(`Pregenerated total objects:    ${obj_list.length}`);
+    console.log(`Pre allocated reading VUs:     ${pre_alloc_read_vus}`);
+    console.log(`Pre allocated writing VUs:     ${pre_alloc_write_vus}`);
+    console.log(`Pre allocated deleting VUs:    ${pre_alloc_delete_vus}`);
+    console.log(`Total pre allocated VUs:       ${total_pre_allocated_vu_count}`);
+    console.log(`Max reading VUs:               ${max_read_vus}`);
+    console.log(`Max writing VUs:               ${max_write_vus}`);
+    console.log(`Max deleting VUs:              ${max_delete_vus}`);
+    console.log(`Total max VUs:                 ${total_max_vu_count}`);
+    console.log(`Time unit:                     ${time_unit}`);
+    console.log(`Read rate:                     ${read_rate}`);
+    console.log(`Writing rate:                  ${write_rate}`);
+    console.log(`Delete rate:                   ${delete_rate}`);
 }

 export function teardown(data) {
-  if (obj_registry) {
-    obj_registry.close();
-  }
-  const end_timestamp = Date.now()
-  console.log(
-    `Load finished at:              ${Date(end_timestamp).toString()}`)
+    if (obj_registry) {
+        obj_registry.close();
+    }
 }

 export function handleSummary(data) {
-  return {
-    'stdout': textSummary(data, { indent: ' ', enableColors: false }),
-    [summary_json]: JSON.stringify(data),
-  };
+    return {
+        'stdout': textSummary(data, { indent: ' ', enableColors: false }),
+        [summary_json]: JSON.stringify(data),
+    };
 }

 export function obj_write() {
-  if (__ENV.SLEEP_WRITE) {
-    sleep(__ENV.SLEEP_WRITE);
-  }
+    if (__ENV.SLEEP_WRITE) {
+        sleep(__ENV.SLEEP_WRITE);
+    }

-  const headers = { unique_header: uuidv4() };
-  const container =
-    container_list[Math.floor(Math.random() * container_list.length)];
+    const headers = {
+        unique_header: uuidv4()
+    };
+    const container = container_list[Math.floor(Math.random() * container_list.length)];

-  const payload = generator.genPayload();
-  const resp =
-    grpc_client.put(container, headers, payload, write_grpc_chunk_size);
-  if (!resp.success) {
-    log.withField('cid', container).error(resp.error);
-    return;
-  }
+    const { payload, hash } = generator.genPayload(registry_enabled);
+    const resp = grpc_client.put(container, headers, payload, write_grpc_chunk_size);
+    if (!resp.success) {
+        log.withField("cid", container).error(resp.error);
+        return;
+    }

-  if (obj_registry) {
-    obj_registry.addObject(container, resp.object_id, '', '', payload.hash());
-  }
+    if (obj_registry) {
+        obj_registry.addObject(container, resp.object_id, "", "", hash);
+    }
 }

 export function obj_read() {
-  if (__ENV.SLEEP_READ) {
-    sleep(__ENV.SLEEP_READ);
-  }
-
-  if (obj_to_read_selector) {
-    const obj = obj_to_read_selector.nextObject();
-    if (!obj) {
-      return;
+    if (__ENV.SLEEP_READ) {
+        sleep(__ENV.SLEEP_READ);
    }
-    const resp = grpc_client.get(obj.c_id, obj.o_id)
+
+    const obj = obj_list[Math.floor(Math.random() * obj_list.length)];
+    const resp = grpc_client.get(obj.container, obj.object)
    if (!resp.success) {
-      log.withFields({ cid: obj.c_id, oid: obj.o_id }).error(resp.error);
+        log.withFields({cid: obj.container, oid: obj.object}).error(resp.error);
    }
-    return
-  }
-
-  const obj = obj_list[Math.floor(Math.random() * obj_list.length)];
-  const resp = grpc_client.get(obj.container, obj.object)
-  if (!resp.success) {
-    log.withFields({ cid: obj.container, oid: obj.object }).error(resp.error);
-  }
 }

 export function obj_delete() {
-  if (__ENV.SLEEP_DELETE) {
-    sleep(__ENV.SLEEP_DELETE);
-  }
+    if (__ENV.SLEEP_DELETE) {
+        sleep(__ENV.SLEEP_DELETE);
+    }

-  const obj = obj_to_delete_selector.nextObject();
-  if (!obj) {
-    return;
-  }
+    const obj = obj_to_delete_selector.nextObject();
+    if (!obj) {
+        return;
+    }

-  const resp = grpc_client.delete(obj.c_id, obj.o_id);
-  if (!resp.success) {
-    // Log errors except (2052 - object already deleted)
-    log.withFields({ cid: obj.c_id, oid: obj.o_id }).error(resp.error);
-    return;
-  }
+    const resp = grpc_client.delete(obj.c_id, obj.o_id);
+    if (!resp.success) {
+        // Log errors except (2052 - object already deleted)
+        log.withFields({cid: obj.c_id, oid: obj.o_id}).error(resp.error);
+        return;
+    }

-  obj_registry.deleteObject(obj.id);
+    obj_registry.deleteObject(obj.id);
 }
--- a/scenarios/http.js
+++ b/scenarios/http.js
@ -1,143 +1,123 @@
-import {sleep} from 'k6';
-import {SharedArray} from 'k6/data';
-import http from 'k6/http';
+import datagen from 'k6/x/frostfs/datagen';
 import logging from 'k6/x/frostfs/logging';
 import registry from 'k6/x/frostfs/registry';
-import stats from 'k6/x/frostfs/stats';
-
-import {newGenerator} from './libs/datagen.js';
-import {parseEnv} from './libs/env-parser.js';
-import {textSummary} from './libs/k6-summary-0.0.2.js';
-import {uuidv4} from './libs/k6-utils-1.4.0.js';
+import http from 'k6/http';
+import { SharedArray } from 'k6/data';
+import { sleep } from 'k6';
+import { textSummary } from './libs/k6-summary-0.0.2.js';
+import { parseEnv } from './libs/env-parser.js';
+import { uuidv4 } from './libs/k6-utils-1.4.0.js';

 parseEnv();

-const obj_list = new SharedArray('obj_list', function() {
-  return JSON.parse(open(__ENV.PREGEN_JSON)).objects;
+const obj_list = new SharedArray('obj_list', function () {
+    return JSON.parse(open(__ENV.PREGEN_JSON)).objects;
 });

-const container_list = new SharedArray('container_list', function() {
-  return JSON.parse(open(__ENV.PREGEN_JSON)).containers;
+const container_list = new SharedArray('container_list', function () {
+    return JSON.parse(open(__ENV.PREGEN_JSON)).containers;
 });

 const read_size = JSON.parse(open(__ENV.PREGEN_JSON)).obj_size;
-const summary_json = __ENV.SUMMARY_JSON || '/tmp/summary.json';
+const summary_json = __ENV.SUMMARY_JSON || "/tmp/summary.json";

 // Select random HTTP endpoint for current VU
 const http_endpoints = __ENV.HTTP_ENDPOINTS.split(',');
-const http_endpoint =
-    http_endpoints[Math.floor(Math.random() * http_endpoints.length)];
-const log = logging.new().withField('endpoint', http_endpoint);
+const http_endpoint = http_endpoints[Math.floor(Math.random() * http_endpoints.length)];
+const log = logging.new().withField("endpoint", http_endpoint);

 const registry_enabled = !!__ENV.REGISTRY_FILE;
-const obj_registry =
-    registry_enabled ? registry.open(__ENV.REGISTRY_FILE) : undefined;
+const obj_registry = registry_enabled ? registry.open(__ENV.REGISTRY_FILE) : undefined;

 const duration = __ENV.DURATION;

-if (!!__ENV.METRIC_TAGS) {
-  stats.setTags(__ENV.METRIC_TAGS)
-}
+const generator = datagen.generator(1024 * parseInt(__ENV.WRITE_OBJ_SIZE), __ENV.PAYLOAD_TYPE || "");

 const scenarios = {};

 const write_vu_count = parseInt(__ENV.WRITERS || '0');
-const generator = newGenerator(write_vu_count > 0);
 if (write_vu_count > 0) {
-  scenarios.write = {
-    executor: 'constant-vus',
-    vus: write_vu_count,
-    duration: `${duration}s`,
-    exec: 'obj_write',
-    gracefulStop: '5s',
-  }
+    scenarios.write = {
+        executor: 'constant-vus',
+        vus: write_vu_count,
+        duration: `${duration}s`,
+        exec: 'obj_write', 
+        gracefulStop: '5s',
+    }
 }

 const read_vu_count = parseInt(__ENV.READERS || '0');
 if (read_vu_count > 0) {
-  scenarios.read = {
-    executor: 'constant-vus',
-    vus: read_vu_count,
-    duration: `${duration}s`,
-    exec: 'obj_read',
-    gracefulStop: '5s',
-  }
+    scenarios.read = {
+        executor: 'constant-vus',
+        vus: read_vu_count,
+        duration: `${duration}s`,
+        exec: 'obj_read', 
+        gracefulStop: '5s',
+    }
 }

 export const options = {
-  scenarios,
-  setupTimeout: '5s',
+    scenarios,
+    setupTimeout: '5s',
 };

 export function setup() {
-  const total_vu_count = write_vu_count + read_vu_count;
+    const total_vu_count = write_vu_count + read_vu_count;

-  console.log(`Pregenerated containers:       ${container_list.length}`);
-  console.log(`Pregenerated read object size: ${read_size}`);
-  console.log(`Pregenerated total objects:    ${obj_list.length}`);
-  console.log(`Reading VUs:                   ${read_vu_count}`);
-  console.log(`Writing VUs:                   ${write_vu_count}`);
-  console.log(`Total VUs:                     ${total_vu_count}`);
-
-  const start_timestamp = Date.now()
-  console.log(
-      `Load started at:               ${Date(start_timestamp).toString()}`)
+    console.log(`Pregenerated containers:       ${container_list.length}`);
+    console.log(`Pregenerated read object size: ${read_size}`);
+    console.log(`Pregenerated total objects:    ${obj_list.length}`);
+    console.log(`Reading VUs:                   ${read_vu_count}`);
+    console.log(`Writing VUs:                   ${write_vu_count}`);
+    console.log(`Total VUs:                     ${total_vu_count}`);
 }

 export function teardown(data) {
-  if (obj_registry) {
-    obj_registry.close();
-  }
-  const end_timestamp = Date.now()
-  console.log(
-      `Load finished at:              ${Date(end_timestamp).toString()}`)
+    if (obj_registry) {
+        obj_registry.close();
+    }
 }

 export function handleSummary(data) {
-  return {
-    'stdout': textSummary(data, {indent: ' ', enableColors: false}),
-    [summary_json]: JSON.stringify(data),
-  };
+    return {
+        'stdout': textSummary(data, { indent: ' ', enableColors: false }),
+        [summary_json]: JSON.stringify(data),
+    };
 }

 export function obj_write() {
-  if (__ENV.SLEEP_WRITE) {
-    sleep(__ENV.SLEEP_WRITE);
-  }
+    if (__ENV.SLEEP_WRITE) {
+        sleep(__ENV.SLEEP_WRITE);
+    }

-  const container =
-      container_list[Math.floor(Math.random() * container_list.length)];
+    const container = container_list[Math.floor(Math.random() * container_list.length)];

-  const payload = generator.genPayload();
-  const data = {
-    field: uuidv4(),
-    // Because we use `file` wrapping and it is not straightforward to use
-    // streams here,
-    // `-e STREAMING=1` has no effect for this scenario.
-    file: http.file(payload.bytes(), 'random.data'),
-  };
+    const { payload, hash } = generator.genPayload(registry_enabled);
+    const data = {
+        field: uuidv4(),
+        file: http.file(payload, "random.data"),
+    };

-  const resp = http.post(`http://${http_endpoint}/upload/${container}`, data);
-  if (resp.status != 200) {
-    log.withFields({status: resp.status, cid: container}).error(resp.error);
-    return;
-  }
-  const object_id = JSON.parse(resp.body).object_id;
-  if (obj_registry) {
-    obj_registry.addObject(container, object_id, '', '', payload.hash());
-  }
+    const resp = http.post(`http://${http_endpoint}/upload/${container}`, data);
+    if (resp.status != 200) {
+        log.withFields({status: resp.status, cid: container}).error(resp.error);
+        return;
+    }
+    const object_id = JSON.parse(resp.body).object_id;
+    if (obj_registry) {
+        obj_registry.addObject(container, object_id, "", "", hash);
+    }
 }

 export function obj_read() {
-  if (__ENV.SLEEP_READ) {
-    sleep(__ENV.SLEEP_READ);
-  }
+    if (__ENV.SLEEP_READ) {
+        sleep(__ENV.SLEEP_READ);
+    }

-  const obj = obj_list[Math.floor(Math.random() * obj_list.length)];
-  const resp =
-      http.get(`http://${http_endpoint}/get/${obj.container}/${obj.object}`);
-  if (resp.status != 200) {
-    log.withFields({status: resp.status, cid: obj.container, oid: obj.object})
-        .error(resp.error);
-  }
+    const obj = obj_list[Math.floor(Math.random() * obj_list.length)];
+    const resp = http.get(`http://${http_endpoint}/get/${obj.container}/${obj.object}`);
+    if (resp.status != 200) {
+        log.withFields({status: resp.status, cid: obj.container, oid: obj.object}).error(resp.error);
+    }
 }
--- a/scenarios/libs/datagen.js
+++ b/scenarios/libs/datagen.js
@ -1,8 +0,0 @@
-import datagen from 'k6/x/frostfs/datagen';
-
-export function newGenerator(condition) {
-	if (condition) {
-		return datagen.generator(1024 * parseInt(__ENV.WRITE_OBJ_SIZE), __ENV.PAYLOAD_TYPE || "", !!__ENV.STREAMING);
-	}
-	return undefined;
-}
--- a/scenarios/local.js
+++ b/scenarios/local.js
@ -1,177 +1,158 @@
-import {SharedArray} from 'k6/data';
-import exec from 'k6/execution';
+import datagen from 'k6/x/frostfs/datagen';
 import local from 'k6/x/frostfs/local';
 import logging from 'k6/x/frostfs/logging';
 import registry from 'k6/x/frostfs/registry';
-import stats from 'k6/x/frostfs/stats';
-
-import {newGenerator} from './libs/datagen.js';
-import {parseEnv} from './libs/env-parser.js';
-import {textSummary} from './libs/k6-summary-0.0.2.js';
-import {uuidv4} from './libs/k6-utils-1.4.0.js';
+import { SharedArray } from 'k6/data';
+import { textSummary } from './libs/k6-summary-0.0.2.js';
+import { parseEnv } from './libs/env-parser.js';
+import { uuidv4 } from './libs/k6-utils-1.4.0.js';

 parseEnv();

-const obj_list = new SharedArray('obj_list', function() {
-  return JSON.parse(open(__ENV.PREGEN_JSON)).objects;
+const obj_list = new SharedArray('obj_list', function () {
+    return JSON.parse(open(__ENV.PREGEN_JSON)).objects;
 });

-const container_list = new SharedArray('container_list', function() {
-  return JSON.parse(open(__ENV.PREGEN_JSON)).containers;
+const container_list = new SharedArray('container_list', function () {
+    return JSON.parse(open(__ENV.PREGEN_JSON)).containers;
 });

 const read_size = JSON.parse(open(__ENV.PREGEN_JSON)).obj_size;
-const summary_json = __ENV.SUMMARY_JSON || '/tmp/summary.json';
+const summary_json = __ENV.SUMMARY_JSON || "/tmp/summary.json";

 const config_file = __ENV.CONFIG_FILE;
-const config_dir = __ENV.CONFIG_DIR;
 const debug_logger = (__ENV.DEBUG_LOGGER || 'false') == 'true';
-const max_total_size_gb =
-    __ENV.MAX_TOTAL_SIZE_GB ? parseInt(__ENV.MAX_TOTAL_SIZE_GB) : 0;
-const local_client =
-    local.connect(config_file, config_dir, '', debug_logger, max_total_size_gb);
-const log = logging.new().withFields(
-    {'config_file': config_file, 'config_dir': config_dir});
+const local_client = local.connect(config_file, '', debug_logger);
+const log = logging.new().withField("config", config_file);

 const registry_enabled = !!__ENV.REGISTRY_FILE;
-const obj_registry =
-    registry_enabled ? registry.open(__ENV.REGISTRY_FILE) : undefined;
+const obj_registry = registry_enabled ? registry.open(__ENV.REGISTRY_FILE) : undefined;

 const duration = __ENV.DURATION;

-if (!!__ENV.METRIC_TAGS) {
-  stats.setTags(__ENV.METRIC_TAGS)
-}
-
 const delete_age = __ENV.DELETE_AGE ? parseInt(__ENV.DELETE_AGE) : undefined;
 let obj_to_delete_selector = undefined;
 if (registry_enabled && delete_age) {
-  obj_to_delete_selector = registry.getSelector(
-      __ENV.REGISTRY_FILE, 'obj_to_delete',
-      __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0, {
-        status: 'created',
-        age: delete_age,
-      });
+    obj_to_delete_selector = registry.getSelector(
+        __ENV.REGISTRY_FILE,
+        "obj_to_delete",
+        __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0,
+        {
+            status: "created",
+            age: delete_age,
+        }
+    );
 }

+const generator = datagen.generator(1024 * parseInt(__ENV.WRITE_OBJ_SIZE));
+
 const scenarios = {};

 const write_vu_count = parseInt(__ENV.WRITERS || '0');
-const generator = newGenerator(write_vu_count > 0);
 if (write_vu_count > 0) {
-  scenarios.write = {
-    executor: 'constant-vus',
-    vus: write_vu_count,
-    duration: `${duration}s`,
-    exec: 'obj_write',
-    gracefulStop: '5s',
-  };
+    scenarios.write = {
+        executor: 'constant-vus',
+        vus: write_vu_count,
+        duration: `${duration}s`,
+        exec: 'obj_write', 
+        gracefulStop: '5s',
+    };
 }

 const read_vu_count = parseInt(__ENV.READERS || '0');
 if (read_vu_count > 0) {
-  scenarios.read = {
-    executor: 'constant-vus',
-    vus: read_vu_count,
-    duration: `${duration}s`,
-    exec: 'obj_read',
-    gracefulStop: '5s',
-  };
+    scenarios.read = {
+        executor: 'constant-vus',
+        vus: read_vu_count,
+        duration: `${duration}s`,
+        exec: 'obj_read', 
+        gracefulStop: '5s',
+    };
 }

 const delete_vu_count = parseInt(__ENV.DELETERS || '0');
 if (delete_vu_count > 0) {
-  if (!obj_to_delete_selector) {
-    throw new Error(
-        'Positive DELETE worker number without a proper object selector');
-  }
+    if (!obj_to_delete_selector) {
+        throw new Error('Positive DELETE worker number without a proper object selector');
+    }

-  scenarios.delete = {
-    executor: 'constant-vus',
-    vus: delete_vu_count,
-    duration: `${duration}s`,
-    exec: 'obj_delete',
-    gracefulStop: '5s',
-  };
+    scenarios.delete = {
+        executor: 'constant-vus',
+        vus: delete_vu_count,
+        duration: `${duration}s`,
+        exec: 'obj_delete', 
+        gracefulStop: '5s',
+    };
 }

 export const options = {
-  scenarios,
-  setupTimeout: '5s',
+    scenarios,
+    setupTimeout: '5s',
 };

 export function setup() {
-  const total_vu_count = write_vu_count + read_vu_count + delete_vu_count;
+    const total_vu_count = write_vu_count + read_vu_count + delete_vu_count;

-  console.log(`Pregenerated containers:       ${container_list.length}`);
-  console.log(`Pregenerated read object size: ${read_size}`);
-  console.log(`Pregenerated total objects:    ${obj_list.length}`);
-  console.log(`Reading VUs:                   ${read_vu_count}`);
-  console.log(`Writing VUs:                   ${write_vu_count}`);
-  console.log(`Deleting VUs:                  ${delete_vu_count}`);
-  console.log(`Total VUs:                     ${total_vu_count}`);
-
-  const start_timestamp = Date.now()
-  console.log(
-      `Load started at:               ${Date(start_timestamp).toString()}`)
+    console.log(`Pregenerated containers:       ${container_list.length}`);
+    console.log(`Pregenerated read object size: ${read_size}`);
+    console.log(`Pregenerated total objects:    ${obj_list.length}`);
+    console.log(`Reading VUs:                   ${read_vu_count}`);
+    console.log(`Writing VUs:                   ${write_vu_count}`);
+    console.log(`Deleting VUs:                  ${delete_vu_count}`);
+    console.log(`Total VUs:                     ${total_vu_count}`);
 }

 export function teardown(data) {
-  if (obj_registry) {
-    obj_registry.close();
-  }
-  const end_timestamp = Date.now()
-  console.log(
-      `Load finished at:              ${Date(end_timestamp).toString()}`)
+    if (obj_registry) {
+        obj_registry.close();
+    }
 }

 export function handleSummary(data) {
-  return {
-    'stdout': textSummary(data, {indent: ' ', enableColors: false}),
-    [summary_json]: JSON.stringify(data),
-  };
+    return {
+        'stdout': textSummary(data, { indent: ' ', enableColors: false }),
+        [summary_json]: JSON.stringify(data),
+    };
 }

 export function obj_write() {
-  const headers = {unique_header: uuidv4()};
-  const container =
-      container_list[Math.floor(Math.random() * container_list.length)];
+    const headers = {
+        unique_header: uuidv4()
+    };
+    const container = container_list[Math.floor(Math.random() * container_list.length)];

-  const payload = generator.genPayload();
-  const resp = local_client.put(container, headers, payload);
-  if (!resp.success) {
-    if (resp.abort) {
-      exec.test.abort(resp.error);
+    const { payload, hash } = generator.genPayload(registry_enabled);
+    const resp = local_client.put(container, headers, payload);
+    if (!resp.success) {
+        log.withField("cid", container).error(resp.error);
+        return;
    }
-    log.withField('cid', container).error(resp.error);
-    return;
-  }

-  if (obj_registry) {
-    obj_registry.addObject(container, resp.object_id, '', '', payload.hash());
-  }
+    if (obj_registry) {
+        obj_registry.addObject(container, resp.object_id, "", "", hash);
+    }
 }

 export function obj_read() {
-  const obj = obj_list[Math.floor(Math.random() * obj_list.length)];
-  const resp = local_client.get(obj.container, obj.object)
-  if (!resp.success) {
-    log.withFields({cid: obj.container, oid: obj.object}).error(resp.error);
-  }
+    const obj = obj_list[Math.floor(Math.random() * obj_list.length)];
+    const resp = local_client.get(obj.container, obj.object)
+    if (!resp.success) {
+        log.withFields({cid: obj.container, oid: obj.object}).error(resp.error);
+    }
 }

 export function obj_delete() {
-  const obj = obj_to_delete_selector.nextObject();
-  if (!obj) {
-    return;
-  }
+    const obj = obj_to_delete_selector.nextObject();
+    if (!obj) {
+        return;
+    }

-  const resp = local_client.delete(obj.c_id, obj.o_id);
-  if (!resp.success) {
-    // Log errors except (2052 - object already deleted)
-    log.withFields({cid: obj.c_id, oid: obj.o_id}).error(resp.error);
-    return;
-  }
+    const resp = local_client.delete(obj.c_id, obj.o_id);
+    if (!resp.success) {
+        // Log errors except (2052 - object already deleted)
+        log.withFields({cid: obj.c_id, oid: obj.o_id}).error(resp.error);
+        return;
+    }

-  obj_registry.deleteObject(obj.id);
+    obj_registry.deleteObject(obj.id);
 }
--- a/scenarios/preset/helpers/aws_cli.py
+++ b/scenarios/preset/helpers/aws_cli.py
@ -1,40 +1,34 @@
 import uuid

-from helpers.cmd import execute_cmd, log
+from helpers.cmd import execute_cmd


-def create_bucket(endpoint, versioning, location, acl, no_verify_ssl):
-    configuration = ""
+def create_bucket(endpoint, versioning, location, no_verify_ssl):
    if location:
-        configuration = f"--create-bucket-configuration 'LocationConstraint={location}'"
-    if acl:
-        acl = f"--acl {acl}"
-
+        location = f"--create-bucket-configuration 'LocationConstraint={location}'"
    bucket_name = str(uuid.uuid4())
    no_verify_ssl_str = "--no-verify-ssl" if no_verify_ssl else ""
    cmd_line = f"aws {no_verify_ssl_str} s3api create-bucket --bucket {bucket_name} " \
-               f"--endpoint {endpoint} {configuration} {acl} "
+               f"--endpoint {endpoint} {location}"
    cmd_line_ver = f"aws {no_verify_ssl_str} s3api put-bucket-versioning --bucket {bucket_name} " \
-                   f"--versioning-configuration Status=Enabled --endpoint {endpoint} {acl} "
+                   f"--versioning-configuration Status=Enabled --endpoint {endpoint} "

-    output, success = execute_cmd(cmd_line)
+    out, success = execute_cmd(cmd_line)

-    if not success and "succeeded and you already own it" not in output:
-        log(f"{cmd_line}\n"
-            f"Bucket {bucket_name} has not been created:\n"
-            f"Error: {output}", endpoint)
+    if not success and "succeeded and you already own it" not in out:
+        print(f" > Bucket {bucket_name} has not been created:\n{out}")
        return False
+    
+    print(f"cmd: {cmd_line}")

    if versioning == "True":
-        output, success = execute_cmd(cmd_line_ver)
+        out, success = execute_cmd(cmd_line_ver)
        if not success:
-            log(f"{cmd_line_ver}\n"
-                f"Bucket versioning has not been applied for bucket {bucket_name}\n"
-                f"Error: {output}", endpoint)
+            print(f" > Bucket versioning has not been applied for bucket {bucket_name}:\n{out}")
        else:
-            log(f"Bucket versioning has been applied for bucket {bucket_name}", endpoint)
+            print(f" > Bucket versioning has been applied.")
    
-    log(f"Created bucket: {bucket_name} ({location})", endpoint)
+    print(f"Created bucket: {bucket_name} via endpoint {endpoint}")
    return bucket_name


@ -43,12 +37,10 @@ def upload_object(bucket, payload_filepath, endpoint, no_verify_ssl):
    no_verify_ssl_str = "--no-verify-ssl" if no_verify_ssl else ""
    cmd_line = f"aws {no_verify_ssl_str} s3api put-object --bucket {bucket} --key {object_name} " \
               f"--body {payload_filepath} --endpoint {endpoint}"
-    output, success = execute_cmd(cmd_line)
+    out, success = execute_cmd(cmd_line)

    if not success:
-        log(f"{cmd_line}\n"
-            f"Object {object_name} has not been uploaded\n"
-            f"Error: {output}", endpoint)
+        print(f" > Object {object_name} has not been uploaded.")
        return False
    
    return bucket, endpoint, object_name
--- a/scenarios/preset/helpers/cmd.py
+++ b/scenarios/preset/helpers/cmd.py
@ -1,12 +1,9 @@
 import os
 import shlex
 import sys
-from datetime import datetime
+
 from subprocess import check_output, CalledProcessError, STDOUT

-def log(message, endpoint):
-    time = datetime.utcnow()
-    print(f"{time} at {endpoint}: {message}")

 def execute_cmd(cmd_line):
    cmd_args = shlex.split(cmd_line)
--- a/scenarios/preset/helpers/frostfs_cli.py
+++ b/scenarios/preset/helpers/frostfs_cli.py
@ -1,119 +1,47 @@
 import re
-from helpers.cmd import execute_cmd, log

-def create_container(endpoint, policy, container_creation_retry, wallet_path, config, acl, local=False, retry=0):
-    if retry > int(container_creation_retry):
-        raise ValueError(f"unable to create container: too many unsuccessful attempts")
+from helpers.cmd import execute_cmd

-    if wallet_path:
-        wallet_file = f"--wallet {wallet_path}"
-    if config:
-        wallet_config = f"--config {config}"
-    if acl:
-        acl_param = f"--basic-acl {acl}"
-    cmd_line = f"frostfs-cli --rpc-endpoint {endpoint} container create {wallet_file} {wallet_config} " \
-               f" --policy '{policy}' {acl_param} --await"
+
+def create_container(endpoint, policy, wallet_file, wallet_config):
+    cmd_line = f"frostfs-cli --rpc-endpoint {endpoint} container create --wallet {wallet_file} --config {wallet_config} " \
+               f" --policy '{policy}' --basic-acl public-read-write --await"

    output, success = execute_cmd(cmd_line)

    if not success:
-        log(f"{cmd_line}\n"
-            f"Container has not been created\n"
-            f"{output}", endpoint)
+        print(f" > Container has not been created:\n{output}")
        return False
    
    try:
        fst_str = output.split('\n')[0]
    except Exception:
-        log(f"{cmd_line}\n"
-            f"Incorrect output\n"
-            f"Output: {output or '<empty>'}", endpoint)
+        print(f"Got empty output: {output}")
        return False
    splitted = fst_str.split(": ")
    if len(splitted) != 2:
-        raise ValueError(f"no CID was parsed from command output:\t{fst_str}")
-    cid = splitted[1]
+        raise ValueError(f"no CID was parsed from command output: \t{fst_str}")

-    log(f"Created container: {cid} ({policy})", endpoint)
+    print(f"Created container: {splitted[1]} via endpoint {endpoint}")

-    if not local:
-        return cid
-    
-    cmd_line = f"frostfs-cli netmap nodeinfo --rpc-endpoint {endpoint} {wallet_file} {wallet_config}"
-    output, success = execute_cmd(cmd_line)
-
-    if not success:
-        log(f"{cmd_line}\n"
-            f"Failed to get nodeinfo\n"
-            f"{output}", endpoint)
-        return False
-    
-    try:
-        fst_str = output.split('\n')[0]
-    except Exception:
-        log(f"{cmd_line}\n"
-            f"Incorrect output\n"
-            f"Output: {output or '<empty>'}", endpoint)
-        return False
-    splitted = fst_str.split(": ")
-    if len(splitted) != 2 or len(splitted[1]) == 0:
-        raise ValueError(f"no node key was parsed from command output:\t{fst_str}")
-    
-    node_key = splitted[1]
-
-    cmd_line = f"frostfs-cli container nodes --rpc-endpoint {endpoint} {wallet_file} {wallet_config} --cid {cid}"
-    output, success = execute_cmd(cmd_line)
-
-    if not success:
-        log(f"{cmd_line}\n"
-            f"Failed to get container nodes\n"
-            f"{output}", endpoint)
-        return False
-
-    for output_str in output.split('\n'):
-        output_str = output_str.lstrip().rstrip()
-        if not output_str.startswith("Node "):
-            continue
-        splitted = output_str.split(": ")
-        if len(splitted) != 2 or len(splitted[1]) == 0:
-            continue
-        try:
-            k = splitted[1].split(" ")[0]
-        except Exception:
-            log(f"{cmd_line}\n"
-                f"Incorrect output\n"
-                f"Output: {output or '<empty>'}", endpoint)
-            continue
-        if k == node_key:
-            return cid
-    
-    log(f"Created container {cid} is not stored on {endpoint}, creating another one...", endpoint)
-    return create_container(endpoint, policy, container_creation_retry, wallet_path, config, acl, local, retry + 1)
+    return splitted[1]


 def upload_object(container, payload_filepath, endpoint, wallet_file, wallet_config):
    object_name = ""
-    if wallet_file:
-        wallet_file = "--wallet " + wallet_file
-    if wallet_config:
-        wallet_config = "--config " + wallet_config
-    cmd_line = f"frostfs-cli --rpc-endpoint {endpoint} object put --file {payload_filepath} {wallet_file} {wallet_config} " \
+    cmd_line = f"frostfs-cli --rpc-endpoint {endpoint} object put --file {payload_filepath} --wallet {wallet_file} --config {wallet_config} " \
               f"--cid {container} --no-progress"
    output, success = execute_cmd(cmd_line)

    if not success:
-        log(f"{cmd_line}\n"
-            f"Object {object_name} has not been uploaded\n"
-            f"Error: {output}", endpoint)
+        print(f" > Object {object_name} has not been uploaded:\n{output}")
        return False

    try:
        # taking second string from command output
        snd_str = output.split('\n')[1]
    except Exception:
-        log(f"{cmd_line}\n"
-            f"Incorrect output\n"
-            f"Output: {output or '<empty>'}", endpoint)
+        print(f"Got empty input: {output}")
        return False
    splitted = snd_str.split(": ")
    if len(splitted) != 2:
@ -122,42 +50,32 @@ def upload_object(container, payload_filepath, endpoint, wallet_file, wallet_con


 def get_object(cid, oid, endpoint, out_filepath, wallet_file, wallet_config):
-    if wallet_file:
-        wallet_file = "--wallet " + wallet_file
-    if wallet_config:
-        wallet_config = "--config " + wallet_config
-    cmd_line = f"frostfs-cli object get -r {endpoint} --cid {cid} --oid {oid} {wallet_file} {wallet_config} " \
+    cmd_line = f"frostfs-cli object get -r {endpoint} --cid {cid} --oid {oid} --wallet {wallet_file} --config {wallet_config} " \
               f"--file {out_filepath}"

    output, success = execute_cmd(cmd_line)

    if not success:
-        log(f"{cmd_line}\n"
-            f"Failed to get object {oid} from container {cid}\n"
-            f"Error: {output}", endpoint)
+        print(f" > Failed to get object {output} from container {cid} \r\n"
+              f" > Error: {output}")
        return False

    return True


 def search_object_by_id(cid, oid, endpoint, wallet_file, wallet_config, ttl=2):
-    if wallet_file:
-        wallet_file = "--wallet " + wallet_file
-    if wallet_config:
-        wallet_config = "--config " + wallet_config
-    cmd_line = f"frostfs-cli object search --ttl {ttl} -r {endpoint} --cid {cid} --oid {oid} {wallet_file} {wallet_config} "
+    cmd_line = f"frostfs-cli object search --ttl {ttl} -r {endpoint} --cid {cid} --oid {oid} --wallet {wallet_file} --config {wallet_config} "

    output, success = execute_cmd(cmd_line)

    if not success:
-        log(f"{cmd_line}\n"
-            f"Failed to search object {oid} for container {cid}\n"
-            f"Error: {output}", endpoint)
+        print(f" > Failed to search object {oid} for container {cid} \r\n"
+              f" > Error: {output}")
        return False

    re_rst = re.search(r'Found (\d+) objects', output)

    if not re_rst:
-        raise Exception("Failed to parse search results")
+        raise Exception("Failed to parce search results")

    return re_rst.group(1)
--- a/scenarios/preset/preset_grpc.py
+++ b/scenarios/preset/preset_grpc.py
@ -3,6 +3,7 @@
 import argparse
 from itertools import cycle
 import json
+import random
 import sys
 import tempfile
 import time
@ -15,29 +16,25 @@ from helpers.frostfs_cli import create_container, upload_object
 ERROR_WRONG_CONTAINERS_COUNT = 1
 ERROR_WRONG_OBJECTS_COUNT = 2
 MAX_WORKERS = 50
-DEFAULT_POLICY = "REP 2 IN X CBF 2 SELECT 2 FROM * AS X"

 parser = argparse.ArgumentParser()
 parser.add_argument('--size', help='Upload objects size in kb')
 parser.add_argument('--containers', help='Number of containers to create')
-parser.add_argument('--retry', default=20, help='Maximum number of retries to create a container')
 parser.add_argument('--out', help='JSON file with output')
 parser.add_argument('--preload_obj', help='Number of pre-loaded objects')
 parser.add_argument('--wallet', help='Wallet file path')
 parser.add_argument('--config', help='Wallet config file path')
 parser.add_argument(
    "--policy",
-    help=f"Container placement policy. Default is {DEFAULT_POLICY}",
-    action="append"
+    help="Container placement policy",
+    default="REP 2 IN X CBF 2 SELECT 2 FROM * AS X"
 )
 parser.add_argument('--endpoint', help='Nodes addresses separated by comma.')
 parser.add_argument('--update', help='Save existed containers')
 parser.add_argument('--ignore-errors', help='Ignore preset errors', action='store_true')
 parser.add_argument('--workers', help='Count of workers in preset. Max = 50, Default = 50', default=50)
-parser.add_argument('--sleep', help='Time to sleep between containers creation and objects upload (in seconds), '
+parser.add_argument('--sleep', help='Time to sleep between container creation and object PUT (in seconds), '
                                    'Default = 8', default=8)
-parser.add_argument('--local', help='Create containers that store data on provided endpoints. Warning: additional empty containers may be created.', action='store_true')
-parser.add_argument('--acl', help='Container ACL. Default is public-read-write.', default='public-read-write')

 args: Namespace = parser.parse_args()
 print(args)
@ -48,10 +45,7 @@ def main():
    objects_list = []

    endpoints = args.endpoint.split(',')
-    if not args.policy:
-        args.policy = [DEFAULT_POLICY]

-    container_creation_retry = args.retry
    wallet = args.wallet
    wallet_config = args.config
    workers = int(args.workers)
@ -68,9 +62,9 @@ def main():
        containers_count = int(args.containers)
        print(f"Create containers: {containers_count}")
        with ProcessPoolExecutor(max_workers=min(MAX_WORKERS, workers)) as executor:
-            containers_runs = [executor.submit(create_container, endpoint, policy, container_creation_retry, wallet, wallet_config, args.acl, args.local)
-                               for _, endpoint, policy in 
-                               zip(range(containers_count), cycle(endpoints), cycle(args.policy))]
+            containers_runs = [executor.submit(create_container, endpoint, args.policy, wallet, wallet_config)
+                               for _, endpoint in 
+                               zip(range(containers_count), cycle(endpoints))]

        for run in containers_runs:
            container_id = run.result()
@ -80,7 +74,7 @@ def main():
        print("Create containers: Completed")

    print(f" > Containers: {containers}")
-    if containers_count > 0 and len(containers) != containers_count:
+    if containers_count == 0 or len(containers) != containers_count:
        print(f"Containers mismatch in preset: expected {containers_count}, created {len(containers)}")
        if not ignore_errors:
            sys.exit(ERROR_WRONG_CONTAINERS_COUNT)
@ -103,7 +97,7 @@ def main():
                        
    for run in objects_runs:
        result = run.result()
-        if result:
+        if run.result:
            container_id = result[0]
            endpoint = result[1]
            object_id = result[2]
--- a/scenarios/preset/preset_s3.py
+++ b/scenarios/preset/preset_s3.py
@ -11,11 +11,6 @@ from concurrent.futures import ProcessPoolExecutor
 from helpers.cmd import random_payload
 from helpers.aws_cli import create_bucket, upload_object

-ERROR_WRONG_CONTAINERS_COUNT = 1
-ERROR_WRONG_OBJECTS_COUNT = 2
-MAX_WORKERS = 50
-DEFAULT_LOCATION = ""
-
 parser = argparse.ArgumentParser()

 parser.add_argument('--size', help='Upload objects size in kb.')
@ -25,18 +20,21 @@ parser.add_argument('--preload_obj', help='Number of pre-loaded objects.')
 parser.add_argument('--endpoint', help='S3 Gateways addresses separated by comma.')
 parser.add_argument('--update', help='True/False, False by default. Save existed buckets from target file (--out). '
                                     'New buckets will not be created.')
-parser.add_argument('--location', help=f'AWS location constraint. Default is "{DEFAULT_LOCATION}"', action="append")
+parser.add_argument('--location', help='AWS location. Will be empty, if has not be declared.', default="")
 parser.add_argument('--versioning', help='True/False, False by default.')
 parser.add_argument('--ignore-errors', help='Ignore preset errors', action='store_true')
 parser.add_argument('--no-verify-ssl', help='Ignore SSL verifications', action='store_true')
 parser.add_argument('--workers', help='Count of workers in preset. Max = 50, Default = 50', default=50)
-parser.add_argument('--sleep', help='Time to sleep between buckets creation and objects upload (in seconds), '
+parser.add_argument('--sleep', help='Time to sleep between container creation and object PUT (in seconds), '
                                    'Default = 8', default=8)
-parser.add_argument('--acl', help='Bucket ACL. Default is private. Expected values are: private, public-read or public-read-write.', default="private")

 args = parser.parse_args()
 print(args)

+ERROR_WRONG_CONTAINERS_COUNT = 1
+ERROR_WRONG_OBJECTS_COUNT = 2
+MAX_WORKERS = 50
+
 def main():
    buckets = []
    objects_list = []
@ -44,8 +42,6 @@ def main():
    no_verify_ssl = args.no_verify_ssl

    endpoints = args.endpoint.split(',')
-    if not args.location:
-        args.location = [DEFAULT_LOCATION]

    workers = int(args.workers)
    objects_per_bucket = int(args.preload_obj)
@ -62,9 +58,9 @@ def main():
        print(f"Create buckets: {buckets_count}")

        with ProcessPoolExecutor(max_workers=min(MAX_WORKERS, workers)) as executor:
-            buckets_runs = [executor.submit(create_bucket, endpoint, args.versioning, location, args.acl, no_verify_ssl) 
-                            for _, endpoint, location in 
-                            zip(range(buckets_count), cycle(endpoints), cycle(args.location))]
+            buckets_runs = [executor.submit(create_bucket, endpoint, args.versioning, args.location, no_verify_ssl) 
+                            for _, endpoint in 
+                            zip(range(buckets_count), cycle(endpoints))]

        for run in buckets_runs:
            bucket_name = run.result()
@ -74,7 +70,7 @@ def main():
        print("Create buckets: Completed")

    print(f" > Buckets: {buckets}")
-    if buckets_count > 0 and len(buckets) != buckets_count:
+    if buckets_count == 0 or len(buckets) != buckets_count:
        print(f"Buckets mismatch in preset: expected {buckets_count}, created {len(buckets)}")
        if not ignore_errors:
            sys.exit(ERROR_WRONG_CONTAINERS_COUNT)
@ -97,7 +93,7 @@ def main():
                        
    for run in objects_runs:
        result = run.result()
-        if result:
+        if run.result:
            bucket = result[0]
            endpoint = result[1]
            object_id = result[2]
--- a/scenarios/preset/resolve_containers_in_preset.py
+++ b/scenarios/preset/resolve_containers_in_preset.py
@ -2,8 +2,7 @@

 import argparse
 import json
-import http.client
-import ssl
+import requests

 parser = argparse.ArgumentParser()
 parser.add_argument('--endpoint', help='Endpoint of the S3 gateway')
@ -17,13 +16,10 @@ def main():

    preset = json.loads(preset_text)

-    conn = http.client.HTTPSConnection(args.endpoint, context = ssl._create_unverified_context())
    containers = []
    for bucket in preset.get('buckets'):
-        conn.request("HEAD", f'/{bucket}')
-        response = conn.getresponse()
-        containers.append(response.getheader('X-Container-Id'))
-        response.read()
+        resp = requests.head(f'{args.endpoint}/{bucket}', verify=False)
+        containers.append(resp.headers['X-Container-Id'])

    preset['containers'] = containers
    with open(args.preset_file, 'w+') as f:
--- a/scenarios/run_scenarios.md
+++ b/scenarios/run_scenarios.md
@ -2,6 +2,7 @@

 **Note:** you can provide file with all environment variables (system env variables overrides env from file) using
 `-e ENV_FILE=.env` (relative path to that file must start from working directory):
+
 ```shell
 $ ./k6 run -e ENV_FILE=.env some-scenario.js
 ```
@ -9,28 +10,32 @@ $ ./k6 run -e ENV_FILE=.env some-scenario.js
 ## Common options for all scenarios:

 Scenarios `grpc.js`, `local.js`, `http.js` and `s3.js` support the following options:
-  * `DURATION` - duration of scenario in seconds.
-  * `READERS` - number of VUs performing read operations.
-  * `WRITERS` - number of VUs performing write operations.
-  * `REGISTRY_FILE` - if set, all produced objects will be stored in database for subsequent verification. Database file name will be set to the value of `REGISTRY_FILE`.
-  * `WRITE_OBJ_SIZE` - object size in kb for write(PUT) operations.
-  * `PREGEN_JSON` - path to json file with pre-generated containers and objects (in case of http scenario we use json pre-generated for grpc scenario).
-  * `SLEEP_WRITE` - time interval (in seconds) between writing VU iterations.
-  * `SLEEP_READ` - time interval (in seconds) between reading VU iterations.
-  * `SELECTION_SIZE` - size of batch to select for deletion (default: 1000).
-  * `PAYLOAD_TYPE` - type of an object payload ("random" or "text", default: "random").
-  * `STREAMING` - if set, the payload is generated on the fly and is not read into memory fully.
-  * `METRIC_TAGS` - custom metrics tags (format `tag1:value1;tag2:value2`).

-Additionally, the profiling extension can be enabled to generate CPU and memory profiles which can be inspected with `go tool pprof file.prof`:
+* `DURATION` - duration of scenario in seconds.
+* `READERS` - number of VUs performing read operations.
+* `WRITERS` - number of VUs performing write operations.
+* `REGISTRY_FILE` - if set, all produced objects will be stored in database for subsequent verification. Database file
+  name will be set to the value of `REGISTRY_FILE`.
+* `WRITE_OBJ_SIZE` - object size in kb for write(PUT) operations.
+* `PREGEN_JSON` - path to json file with pre-generated containers and objects (in case of http scenario we use json
+  pre-generated for grpc scenario).
+* `SLEEP_WRITE` - time interval (in seconds) between writing VU iterations.
+* `SLEEP_READ` - time interval (in seconds) between reading VU iterations.
+* `SELECTION_SIZE` - size of batch to select for deletion (default: 1000).
+* `PAYLOAD_TYPE` - type of an object payload ("random" or "text", default: "random").
+
+Additionally, the profiling extension can be enabled to generate CPU and memory profiles which can be inspected
+with `go tool pprof file.prof`:
+
 ```shell
 $ ./k6 run --out profile (...)
 ```
+
 The profiles are saved in the current directory as `cpu.prof` and `mem.prof`, respectively.

 ## Common options for the local scenarios:

-  * `DEBUG_LOGGER` - uses a development logger for the local storage engine to aid debugging (default: false).
+* `DEBUG_LOGGER` - uses a development logger for the local storage engine to aid debugging (default: false).

 Examples of how to use these options are provided below for each scenario.

@ -43,8 +48,11 @@ The tests will use all pre-created containers for PUT operations and all pre-cre
 ```shell
 $ ./scenarios/preset/preset_grpc.py --size 1024 --containers 1 --out grpc.json --endpoint host1:8080 --preload_obj 500 --policy "REP 2 IN X CBF 1 SELECT 2 FROM * AS X" 
 ```
-  * `--policy` - container policy. If parameter is omitted, the default value is "REP 1 IN X CBF 1 SELECT 1 FROM * AS X".
-  * `--update` - container id. Specify the existing container id, if parameter is omitted the new container will be created.
+
+* `--policy` - container policy. If parameter is omitted, the default value is "REP 1 IN X CBF 1 SELECT 1 FROM * AS X".
+* `--update` - container id. Specify the existing container id, if parameter is omitted the new container will be
+  created.
+
 2. Execute scenario with options:

 ```shell
@ -52,18 +60,24 @@ $ ./k6 run -e DURATION=60 -e WRITE_OBJ_SIZE=8192 -e READERS=20 -e WRITERS=20 -e
 ```

 Options (in addition to the common options):
-  * `GRPC_ENDPOINTS` - GRPC endpoints of FrostFS storage in format `host:port`. To specify multiple endpoints separate them by comma.
-  * `DELETERS` - number of VUs performing delete operations (using deleters requires that options `DELETE_AGE` and `REGISTRY_FILE` are specified as well).
-  * `DELETE_AGE` - age of object in seconds before which it can not be deleted. This parameter can be used to control how many objects we have in the system under load.
-  * `SLEEP_DELETE` - time interval (in seconds) between deleting VU iterations.
-  * `DIAL_TIMEOUT` - timeout to connect to a node (in seconds).
-  * `STREAM_TIMEOUT` - timeout for a single stream message for `PUT`/`GET` operations (in seconds).
+
+* `GRPC_ENDPOINTS` - GRPC endpoints of FrostFS storage in format `host:port`. To specify multiple endpoints separate
+  them by comma.
+* `DELETERS` - number of VUs performing delete operations (using deleters requires that options `DELETE_AGE`
+  and `REGISTRY_FILE` are specified as well).
+* `DELETE_AGE` - age of object in seconds before which it can not be deleted. This parameter can be used to control how
+  many objects we have in the system under load.
+* `SLEEP_DELETE` - time interval (in seconds) between deleting VU iterations.
+* `DIAL_TIMEOUT` - timeout to connect to a node (in seconds).
+* `STREAM_TIMEOUT` - timeout for a single stream message for `PUT`/`GET` operations (in seconds).

 ## Local

 1. Create pre-generated containers or objects:

-The tests will use all pre-created containers for PUT operations and all pre-created objects for READ operations. There is no dedicated script to preset HTTP scenario, so we use the same script as for gRPC:
+The tests will use all pre-created containers for PUT operations and all pre-created objects for READ operations. There
+is no dedicated script to preset HTTP scenario, so we use the same script as for gRPC:
+
 ```shell
 $ ./scenarios/preset/preset_grpc.py --size 1024 --containers 1 --out grpc.json --endpoint host1:8080 --preload_obj 500
 ```
@ -71,21 +85,24 @@ $ ./scenarios/preset/preset_grpc.py --size 1024 --containers 1 --out grpc.json -
 2. Execute scenario with options:

 ```shell
-$ ./k6 run -e DURATION=60 -e WRITE_OBJ_SIZE=8192 -e READERS=20 -e WRITERS=20 -e DELETERS=30 -e DELETE_AGE=10 -e REGISTRY_FILE=registry.bolt -e CONFIG_FILE=/path/to/config.yaml -e CONFIG_DIR=/path/to/dir/ -e PREGEN_JSON=./grpc.json scenarios/local.js
+$ ./k6 run -e DURATION=60 -e WRITE_OBJ_SIZE=8192 -e READERS=20 -e WRITERS=20 -e DELETERS=30 -e DELETE_AGE=10 -e REGISTRY_FILE=registry.bolt -e CONFIG_FILE=/path/to/config.yaml -e PREGEN_JSON=./grpc.json scenarios/local.js
 ```

 Options (in addition to the common options):
-  * `CONFIG_FILE` - path to the local configuration file used for the storage node. Only the storage configuration section is used.
-  * `CONFIG_DIR` - path to the folder with local configuration files used for the storage node.
-  * `DELETERS` - number of VUs performing delete operations (using deleters requires that options `DELETE_AGE` and `REGISTRY_FILE` are specified as well).
-  * `DELETE_AGE` - age of object in seconds before which it can not be deleted. This parameter can be used to control how many objects we have in the system under load.
-  * `MAX_TOTAL_SIZE_GB` - if specified, max payload size in GB of the storage engine. If the storage engine is already full, no new objects will be saved.
+
+* `CONFIG_FILE` - path to the local configuration file used for the storage node. Only the storage configuration section
+  is used.
+* `DELETERS` - number of VUs performing delete operations (using deleters requires that options `DELETE_AGE`
+  and `REGISTRY_FILE` are specified as well).
+* `DELETE_AGE` - age of object in seconds before which it can not be deleted. This parameter can be used to control how
+  many objects we have in the system under load.

 ## HTTP

 1. Create pre-generated containers or objects:

 There is no dedicated script to preset HTTP scenario, so we use the same script as for gRPC:
+
 ```shell
 $ ./scenarios/preset/preset_grpc.py --size 1024 --containers 1 --out grpc.json --endpoint host1:8080 --preload_obj 500
 ```
@ -97,7 +114,9 @@ $ ./k6 run -e DURATION=60 -e WRITE_OBJ_SIZE=8192 -e READERS=10 -e WRITERS=20 -e
 ```

 Options (in addition to the common options):
-  * `HTTP_ENDPOINTS` - endpoints of HTTP gateways in format `host:port`. To specify multiple endpoints separate them by comma.
+
+* `HTTP_ENDPOINTS` - endpoints of HTTP gateways in format `host:port`. To specify multiple endpoints separate them by
+  comma.

 ## S3

@ -124,7 +143,9 @@ The tests will use all pre-created buckets for PUT operations and all pre-create
 ```shell
 $ ./scenarios/preset/preset_s3.py --size 1024 --buckets 1 --out s3_1024kb.json --endpoint host1:8084 --preload_obj 500 --location load-1-4
 ```
-  * '--location' - specify the name of container policy (from policy.json file). It's important to run 'aws configure' each time when the policy file has been changed to pick up the latest policies.
+
+* '--location' - specify the name of container policy (from policy.json file). It's important to run 'aws configure'
+  each time when the policy file has been changed to pick up the latest policies.

 3. Execute scenario with options:

@ -133,11 +154,14 @@ $ ./k6 run -e DURATION=60 -e WRITE_OBJ_SIZE=8192 -e READERS=20 -e WRITERS=20 -e
 ```

 Options (in addition to the common options):
-  * `S3_ENDPOINTS` - endpoints of S3 gateways in format `host:port`. To specify multiple endpoints separate them by comma.
-  * `DELETERS` - number of VUs performing delete operations (using deleters requires that options `DELETE_AGE` and `REGISTRY_FILE` are specified as well).
-  * `DELETE_AGE` - age of object in seconds before which it can not be deleted. This parameter can be used to control how many objects we have in the system under load.
-  * `SLEEP_DELETE` - time interval (in seconds) between deleting VU iterations.
-  * `OBJ_NAME` - if specified, this name will be used for all write operations instead of random generation.
+
+* `S3_ENDPOINTS` - endpoints of S3 gateways in format `host:port`. To specify multiple endpoints separate them by comma.
+* `DELETERS` - number of VUs performing delete operations (using deleters requires that options `DELETE_AGE`
+  and `REGISTRY_FILE` are specified as well).
+* `DELETE_AGE` - age of object in seconds before which it can not be deleted. This parameter can be used to control how
+  many objects we have in the system under load.
+* `SLEEP_DELETE` - time interval (in seconds) between deleting VU iterations.
+* `OBJ_NAME` - if specified, this name will be used for all write operations instead of random generation.

 ## S3 Multipart

@ -153,80 +177,48 @@ scenarios/s3_multipart.js
 ```

 Options:
-* `DURATION` - duration of scenario in seconds.
-* `REGISTRY_FILE` - if set, all produced objects will be stored in database for subsequent verification. Database file name will be set to the value of `REGISTRY_FILE`.
-* `PREGEN_JSON` - path to json file with pre-generated containers.
-* `SLEEP_WRITE` - time interval (in seconds) between writing VU iterations.
-* `PAYLOAD_TYPE` - type of an object payload ("random" or "text", default: "random").
-* `S3_ENDPOINTS` - - endpoints of S3 gateways in format `host:port`. To specify multiple endpoints separate them by comma.
-* `WRITERS` - number of VUs performing upload payload operation
-* `WRITERS_MULTIPART` - number of goroutines that will upload parts in parallel
-* `WRITE_OBJ_SIZE` - object size in kb for write(PUT) operations.
-* `WRITE_OBJ_PART_SIZE` - part size in kb for multipart upload operations (must be greater or equal 5mb).
+
+* `S3_ENDPOINTS` - - endpoints of S3 gateways in format `host:port`. To specify multiple endpoints separate them by
+  comma.
+* `WRITERS` - number of VUs performing write operations.
+* `WRITERS_MULTIPART` - number of parts to upload in parallel.
+* `WRITE_OBJ_PART_SIZE` - specifies the buffer size, in bytes, of each part to upload. The minimum size per part is 5MB
+  MiB.

 ## S3 Local

-1. Follow steps 1. and 2. from the normal S3 scenario in order to obtain credentials and a preset file with the information about the buckets and objects that were pre-created.
-2. Assuming the preset file was named `pregen.json`, we need to populate the bucket-to-container mapping before running the local S3 scenario:
+1. Follow steps 1. and 2. from the normal S3 scenario in order to obtain credentials and a preset file with the
+   information about the buckets and objects that were pre-created.
+2. Assuming the preset file was named `pregen.json`, we need to populate the bucket-to-container mapping before running
+   the local S3 scenario:

-**WARNING**: Be aware that this command will overwrite the `containers` list field in `pregen.json` file. Make a backup if needed beforehand.
+**WARNING**: Be aware that this command will overwrite the `containers` list field in `pregen.json` file. Make a backup
+if needed beforehand.

 ```shell
 $ ./scenarios/preset/resolve_containers_in_preset.py --endpoint s3host:8080 --preset_file pregen.json
 ```

-After this, the `pregen.json` file will contain a `containers` list field the same length as `buckets`, which is the mapping of bucket name to container ID in the order they appear.
+After this, the `pregen.json` file will contain a `containers` list field the same length as `buckets`, which is the
+mapping of bucket name to container ID in the order they appear.

 3. Execute the scenario with the desired options. For example:
+
 ```shell
-$ ./k6 run -e DURATION=60 -e WRITE_OBJ_SIZE=8192 -e READERS=20 -e WRITERS=20 -e CONFIG_FILE=/path/to/node/config.yml -e CONFIG_DIR=/path/to/dir/ -e PREGEN_JSON=pregen.json scenarios/s3local.js
+$ ./k6 run -e DURATION=60 -e WRITE_OBJ_SIZE=8192 -e READERS=20 -e WRITERS=20 -e CONFIG_FILE=/path/to/node/config.yml -e PREGEN_JSON=pregen.json scenarios/s3local.js
 ```

 Note that the `s3local` scenario currently does not support deleters.

 Options (in addition to the common options):
-  * `OBJ_NAME` - if specified, this name will be used for all write operations instead of random generation.
-  * `MAX_TOTAL_SIZE_GB` - if specified, max payload size in GB of the storage engine. If the storage engine is already full, no new objects will be saved.

-## Export metrics
-
-To export metrics to Prometheus (also Grafana and Victoria Metrics support Prometheus format), you need to run `k6` with an option `-o experimental-prometheus-rw` and
-an environment variable `K6_PROMETHEUS_RW_SERVER_URL` whose value corresponds to the URL for the remote write endpoint.
-To specify percentiles for trend metrics, use an environment variable `K6_PROMETHEUS_RW_TREND_STATS`.
-See [k6 docs](https://k6.io/docs/results-output/real-time/prometheus-remote-write/) for a list of all possible options.
-To distinct metrics from different loaders, use an option `METRIC_TAGS`. These tags does not apply to builtin `k6` metrics.
-
-Example:
-```bash
-K6_PROMETHEUS_RW_SERVER_URL=http://host:8428/api/v1/write \
-K6_PROMETHEUS_RW_TREND_STATS="p(95),p(99),min,max" \
-./k6 run ... -o experimental-prometheus-rw -e METRIC_TAGS="instance:server1;run:run1" scenario.js
-```
-
-## Grafana annotations
-
-There is no option to export Grafana annotaions, but it can be easily done with `curl` and Grafana's annotations API.
-Example:
-```shell
-curl --request POST \
-  --url https://user:password@grafana.host/api/annotations \
-  --header 'Content-Type: application/json' \
-  --data '{
-    "dashboardUID": "YsVWNpMIk",
-    "time": 1706533045014,
-    "timeEnd": 1706533085100,
-    "tags": [
-        "tag1",
-        "tag2"
-    ],
-    "text": "Test annotation"
-}'
-```
-See [Grafana docs](https://grafana.com/docs/grafana/latest/developers/http_api/annotations/) for details.
+* `OBJ_NAME` - if specified, this name will be used for all write operations instead of random generation.

 ## Verify

-This scenario allows to verify that objects created by a previous run are really stored in the system and their data is not corrupted. Running this scenario assumes that you've already run gRPC or HTTP or S3 scenario with option `REGISTRY_FILE`.
+This scenario allows to verify that objects created by a previous run are really stored in the system and their data is
+not corrupted. Running this scenario assumes that you've already run gRPC or HTTP or S3 scenario with
+option `REGISTRY_FILE`.

 To verify stored objects execute scenario with options:

@ -234,41 +226,50 @@ To verify stored objects execute scenario with options:
 ./k6 run -e CLIENTS=200 -e TIME_LIMIT=120 -e GRPC_ENDPOINTS=host1:8080,host2:8080 -e S3_ENDPOINTS=host1:8084,host2:8084 -e REGISTRY_FILE=registry.bolt scenarios/verify.js
 ```

-Scenario picks up all objects in `created` status. If object is stored correctly, its' status will be changed into `verified`. If object does not exist or its' data is corrupted, then the status will be changed into `invalid`.
+Scenario picks up all objects in `created` status. If object is stored correctly, its' status will be changed
+into `verified`. If object does not exist or its' data is corrupted, then the status will be changed into `invalid`.
 Scenario ends as soon as all objects are checked or time limit is exceeded.

-Running `VERIFY` scenario modifies status of objects in `REGISTRY_FILE`. Objects that have been verified once won't be verified again. If you would like to verify the same set of objects multiple times, you can create a copy of `REGISTRY_FILE` produced by the `LOAD` scenario and run `VERIFY` against the copy of the file.
+Running `VERIFY` scenario modifies status of objects in `REGISTRY_FILE`. Objects that have been verified once won't be
+verified again. If you would like to verify the same set of objects multiple times, you can create a copy
+of `REGISTRY_FILE` produced by the `LOAD` scenario and run `VERIFY` against the copy of the file.

 Objects produced by HTTP scenario will be verified via gRPC endpoints.

 Options:
-  * `CLIENTS` - number of VUs for verifying objects (VU can handle both GRPC and S3 objects)
-  * `TIME_LIMIT` - amount of time in seconds that is sufficient to verify all objects. If this time interval ends, then verification process will be interrupted and objects that have not been checked will stay in the `created` state.
-  * `REGISTRY_FILE` - database file from which objects for verification should be read.
-  * `SLEEP` - time interval (in seconds) between VU iterations.
-  * `SELECTION_SIZE` - size of batch to select for deletion (default: 1000).
-  * `DIAL_TIMEOUT` - timeout to connect to a node (in seconds).
-  * `STREAM_TIMEOUT` - timeout for a single stream message for `PUT`/`GET` operations (in seconds).

-## Verify preset 
+* `CLIENTS` - number of VUs for verifying objects (VU can handle both GRPC and S3 objects)
+* `TIME_LIMIT` - amount of time in seconds that is sufficient to verify all objects. If this time interval ends, then
+  verification process will be interrupted and objects that have not been checked will stay in the `created` state.
+* `REGISTRY_FILE` - database file from which objects for verification should be read.
+* `SLEEP` - time interval (in seconds) between VU iterations.
+* `SELECTION_SIZE` - size of batch to select for deletion (default: 1000).
+* `DIAL_TIMEOUT` - timeout to connect to a node (in seconds).
+* `STREAM_TIMEOUT` - timeout for a single stream message for `PUT`/`GET` operations (in seconds).
+
+## Verify preset

 Check what all preset objects is in cluster and can be got:
+
 ```
 ./scenarios/preset/check_objects_in_preset.py --endpoint az:8080 --preset_file ./scenarios/presets/grpc_1Mb_c1_o100.json 
 ```

-Options: 
-  * `--endpoint` - endpoint to get objects
-  * `--preset_file` - path to preset file
+Options:
+
+* `--endpoint` - endpoint to get objects
+* `--preset_file` - path to preset file

 Check what all objects in preset is compliance with container policy and get distribution of keys:
+
 ```
 ./scenarios/preset/check_policy_compliance.py --endpoints "az:8080,buky:8080,vedi:8080,glagoli:8080" --expected_copies 2 --preset_file "./scenarios/presets/grpc_10Mb_c100_o400.json"  
 ```

 Options:
-  * `--endpoints` - list of all live endpoints in cluster (comma separated)
-  * `--preset_file` - path to preset file
-  * `--expected_copies` - amount of expected copies for each object
-  * `--max_workers` - amount of workers for check in parallel
-  * `--print_failed` - print failed objects to console
+
+* `--endpoints` - list of all live endpoints in cluster (comma separated)
+* `--preset_file` - path to preset file
+* `--expected_copies` - amount of expected copies for each object
+* `--max_workers` - amount of workers for check in parallel
+* `--print_failed` - print failed objects to console
--- a/scenarios/s3.js
+++ b/scenarios/s3.js
@ -1,226 +1,172 @@
-import {sleep} from 'k6';
-import {SharedArray} from 'k6/data';
-import exec from 'k6/execution';
+import datagen from 'k6/x/frostfs/datagen';
 import logging from 'k6/x/frostfs/logging';
 import registry from 'k6/x/frostfs/registry';
 import s3 from 'k6/x/frostfs/s3';
-import stats from 'k6/x/frostfs/stats';
-
-import {newGenerator} from './libs/datagen.js';
-import {parseEnv} from './libs/env-parser.js';
-import {textSummary} from './libs/k6-summary-0.0.2.js';
-import {uuidv4} from './libs/k6-utils-1.4.0.js';
+import { SharedArray } from 'k6/data';
+import { sleep } from 'k6';
+import { textSummary } from './libs/k6-summary-0.0.2.js';
+import { parseEnv } from './libs/env-parser.js';
+import { uuidv4 } from './libs/k6-utils-1.4.0.js';

 parseEnv();

-const obj_list = new SharedArray(
-    'obj_list',
-    function() { return JSON.parse(open(__ENV.PREGEN_JSON)).objects; });
+const obj_list = new SharedArray('obj_list', function () {
+    return JSON.parse(open(__ENV.PREGEN_JSON)).objects;
+});

-const bucket_list = new SharedArray(
-    'bucket_list',
-    function() { return JSON.parse(open(__ENV.PREGEN_JSON)).buckets; });
+const bucket_list = new SharedArray('bucket_list', function () {
+    return JSON.parse(open(__ENV.PREGEN_JSON)).buckets;
+});

 const read_size = JSON.parse(open(__ENV.PREGEN_JSON)).obj_size;
-const summary_json = __ENV.SUMMARY_JSON || '/tmp/summary.json';
+const summary_json = __ENV.SUMMARY_JSON || "/tmp/summary.json";

-const no_verify_ssl = __ENV.NO_VERIFY_SSL || 'true';
-const connection_args = {
-  no_verify_ssl : no_verify_ssl
-}
+const no_verify_ssl = __ENV.NO_VERIFY_SSL || "true";
+const connection_args = {no_verify_ssl: no_verify_ssl}
 // Select random S3 endpoint for current VU
 const s3_endpoints = __ENV.S3_ENDPOINTS.split(',');
-const s3_endpoint =
-    s3_endpoints[Math.floor(Math.random() * s3_endpoints.length)];
+const s3_endpoint = s3_endpoints[Math.floor(Math.random() * s3_endpoints.length)];
 const s3_client = s3.connect(s3_endpoint, connection_args);
-const log = logging.new().withField('endpoint', s3_endpoint);
+const log = logging.new().withField("endpoint", s3_endpoint);

 const registry_enabled = !!__ENV.REGISTRY_FILE;
-const obj_registry =
-    registry_enabled ? registry.open(__ENV.REGISTRY_FILE) : undefined;
+const obj_registry = registry_enabled ? registry.open(__ENV.REGISTRY_FILE) : undefined;

 const duration = __ENV.DURATION;

-if (!!__ENV.METRIC_TAGS) {
-  stats.setTags(__ENV.METRIC_TAGS)
+const delete_age = __ENV.DELETE_AGE ? parseInt(__ENV.DELETE_AGE) : undefined;
+let obj_to_delete_selector = undefined;
+if (registry_enabled && delete_age) {
+    obj_to_delete_selector = registry.getSelector(
+        __ENV.REGISTRY_FILE,
+        "obj_to_delete",
+        __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0,
+        {
+            status: "created",
+            age: delete_age,
+        }
+    );
 }

-const read_age = __ENV.READ_AGE ? parseInt(__ENV.READ_AGE) : 10;
-let obj_to_read_selector = undefined;
-if (registry_enabled) {
-  obj_to_read_selector = registry.getLoopedSelector(
-      __ENV.REGISTRY_FILE, 'obj_to_read',
-      __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0, {
-        status : 'created',
-        age : read_age,
-      })
-}
+const generator = datagen.generator(1024 * parseInt(__ENV.WRITE_OBJ_SIZE), __ENV.PAYLOAD_TYPE || "");

 const scenarios = {};

 const write_vu_count = parseInt(__ENV.WRITERS || '0');
-const generator = newGenerator(write_vu_count > 0);
 if (write_vu_count > 0) {
-  scenarios.write = {
-    executor : 'constant-vus',
-    vus : write_vu_count,
-    duration : `${duration}s`,
-    exec : 'obj_write',
-    gracefulStop : '5s',
-  };
-}
-
-const delete_age = __ENV.DELETE_AGE ? parseInt(__ENV.DELETE_AGE) : undefined;
-let obj_to_delete_selector = undefined;
-let obj_to_delete_exit_on_null = undefined;
-if (registry_enabled && delete_age) {
-  obj_to_delete_exit_on_null = write_vu_count == 0;
-
-  let constructor = obj_to_delete_exit_on_null ? registry.getOneshotSelector
-                                               : registry.getSelector;
-
-  obj_to_delete_selector =
-      constructor(__ENV.REGISTRY_FILE, 'obj_to_delete',
-                  __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0, {
-                    status : 'created',
-                    age : delete_age,
-                  });
+    scenarios.write = {
+        executor: 'constant-vus',
+        vus: write_vu_count,
+        duration: `${duration}s`,
+        exec: 'obj_write', 
+        gracefulStop: '5s',
+    };
 }

 const read_vu_count = parseInt(__ENV.READERS || '0');
 if (read_vu_count > 0) {
-  scenarios.read = {
-    executor : 'constant-vus',
-    vus : read_vu_count,
-    duration : `${duration}s`,
-    exec : 'obj_read',
-    gracefulStop : '5s',
-  };
+    scenarios.read = {
+        executor: 'constant-vus',
+        vus: read_vu_count,
+        duration: `${duration}s`,
+        exec: 'obj_read', 
+        gracefulStop: '5s',
+    };
 }

 const delete_vu_count = parseInt(__ENV.DELETERS || '0');
 if (delete_vu_count > 0) {
-  if (!obj_to_delete_selector) {
-    throw 'Positive DELETE worker number without a proper object selector';
-  }
+    if (!obj_to_delete_selector) {
+        throw 'Positive DELETE worker number without a proper object selector';
+    }

-  scenarios.delete = {
-    executor : 'constant-vus',
-    vus : delete_vu_count,
-    duration : `${duration}s`,
-    exec : 'obj_delete',
-    gracefulStop : '5s',
-  };
+    scenarios.delete = {
+        executor: 'constant-vus',
+        vus: delete_vu_count,
+        duration: `${duration}s`,
+        exec: 'obj_delete', 
+        gracefulStop: '5s',
+    };
 }

 export const options = {
-  scenarios,
-  setupTimeout : '5s',
+    scenarios,
+    setupTimeout: '5s',
 };

 export function setup() {
-  const total_vu_count = write_vu_count + read_vu_count + delete_vu_count;
+    const total_vu_count = write_vu_count + read_vu_count + delete_vu_count;

-  console.log(`Pregenerated buckets:          ${bucket_list.length}`);
-  console.log(`Pregenerated read object size: ${read_size}`);
-  console.log(`Pregenerated total objects:    ${obj_list.length}`);
-  console.log(`Reading VUs:                   ${read_vu_count}`);
-  console.log(`Writing VUs:                   ${write_vu_count}`);
-  console.log(`Deleting VUs:                  ${delete_vu_count}`);
-  console.log(`Total VUs:                     ${total_vu_count}`);
-
-  const start_timestamp = Date.now()
-  console.log(
-      `Load started at:               ${Date(start_timestamp).toString()}`)
-
-  if (delete_vu_count > 0){
-    obj_to_delete_selector.sync.add(delete_vu_count)
-  }
+    console.log(`Pregenerated buckets:          ${bucket_list.length}`);
+    console.log(`Pregenerated read object size: ${read_size}`);
+    console.log(`Pregenerated total objects:    ${obj_list.length}`);
+    console.log(`Reading VUs:                   ${read_vu_count}`);
+    console.log(`Writing VUs:                   ${write_vu_count}`);
+    console.log(`Deleting VUs:                  ${delete_vu_count}`);
+    console.log(`Total VUs:                     ${total_vu_count}`);
 }

 export function teardown(data) {
-  if (obj_registry) {
-    obj_registry.close();
-  }
-  const end_timestamp = Date.now()
-  console.log(
-      `Load finished at:              ${Date(end_timestamp).toString()}`)
+    if (obj_registry) {
+        obj_registry.close();
+    }
 }

 export function handleSummary(data) {
-  return {
-    'stdout' : textSummary(data, {indent : ' ', enableColors : false}),
-    [summary_json] : JSON.stringify(data),
-  };
-}
+    return {
+        'stdout': textSummary(data, { indent: ' ', enableColors: false }),
+        [summary_json]: JSON.stringify(data),
+    };
+  }

 export function obj_write() {
-  if (__ENV.SLEEP_WRITE) {
-    sleep(__ENV.SLEEP_WRITE);
-  }
+    if (__ENV.SLEEP_WRITE) {
+        sleep(__ENV.SLEEP_WRITE);
+    }

-  const key = __ENV.OBJ_NAME || uuidv4();
-  const bucket = bucket_list[Math.floor(Math.random() * bucket_list.length)];
+    const key = __ENV.OBJ_NAME || uuidv4();
+    const bucket = bucket_list[Math.floor(Math.random() * bucket_list.length)];

-  const payload = generator.genPayload();
-  const resp = s3_client.put(bucket, key, payload);
-  if (!resp.success) {
-    log.withFields({bucket : bucket, key : key}).error(resp.error);
-    return;
-  }
+    const { payload, hash } = generator.genPayload(registry_enabled);
+    const resp = s3_client.put(bucket, key, payload);
+    if (!resp.success) {
+        log.withFields({bucket: bucket, key: key}).error(resp.error);
+        return;
+    }

-  if (obj_registry) {
-    obj_registry.addObject('', '', bucket, key, payload.hash());
-  }
+    if (obj_registry) {
+        obj_registry.addObject("", "", bucket, key, hash);
+    }
 }

 export function obj_read() {
-  if (__ENV.SLEEP_READ) {
-    sleep(__ENV.SLEEP_READ);
-  }
-
-  if (obj_to_read_selector) {
-    const obj = obj_to_read_selector.nextObject();
-    if (!obj) {
-      return;
+    if (__ENV.SLEEP_READ) {
+        sleep(__ENV.SLEEP_READ);
    }
-    const resp = s3_client.get(obj.s3_bucket, obj.s3_key)
+
+    const obj = obj_list[Math.floor(Math.random() * obj_list.length)];
+
+    const resp = s3_client.get(obj.bucket, obj.object);
    if (!resp.success) {
-      log.withFields({bucket : obj.s3_bucket, key : obj.s3_key})
-          .error(resp.error);
-    }
-    return
-  }
-
-  const obj = obj_list[Math.floor(Math.random() * obj_list.length)];
-
-  const resp = s3_client.get(obj.bucket, obj.object);
-  if (!resp.success) {
-    log.withFields({bucket : obj.bucket, key : obj.object}).error(resp.error);
-  }
+        log.withFields({bucket: obj.bucket, key: obj.object}).error(resp.error);
+    } 
 }

 export function obj_delete() {
-  if (__ENV.SLEEP_DELETE) {
-    sleep(__ENV.SLEEP_DELETE);
-  }
-
-  const obj = obj_to_delete_selector.nextObject();
-  if (!obj) {
-    if (obj_to_delete_exit_on_null) {
-      obj_to_delete_selector.sync.done()
-      obj_to_delete_selector.sync.wait()
-      exec.test.abort("No more objects to select");
+    if (__ENV.SLEEP_DELETE) {
+        sleep(__ENV.SLEEP_DELETE);
    }
-    return;
-  }

-  const resp = s3_client.delete(obj.s3_bucket, obj.s3_key);
-  if (!resp.success) {
-    log.withFields({bucket : obj.s3_bucket, key : obj.s3_key, op : 'DELETE'})
-        .error(resp.error);
-    return;
-  }
+    const obj = obj_to_delete_selector.nextObject();
+    if (!obj) {
+        return;
+    }

-  obj_registry.deleteObject(obj.id);
+    const resp = s3_client.delete(obj.s3_bucket, obj.s3_key);
+    if (!resp.success) {
+        log.withFields({bucket: obj.s3_bucket, key: obj.s3_key, op: "DELETE"}).error(resp.error);
+        return;
+    }
+
+    obj_registry.deleteObject(obj.id);
 }
--- a/scenarios/s3_car.js
+++ b/scenarios/s3_car.js
@ -1,70 +1,54 @@
-import {sleep} from 'k6';
-import {SharedArray} from 'k6/data';
+import datagen from 'k6/x/frostfs/datagen';
 import logging from 'k6/x/frostfs/logging';
 import registry from 'k6/x/frostfs/registry';
 import s3 from 'k6/x/frostfs/s3';
-import stats from 'k6/x/frostfs/stats';
-
-import {newGenerator} from './libs/datagen.js';
-import {parseEnv} from './libs/env-parser.js';
-import {textSummary} from './libs/k6-summary-0.0.2.js';
-import {uuidv4} from './libs/k6-utils-1.4.0.js';
+import { SharedArray } from 'k6/data';
+import { sleep } from 'k6';
+import { textSummary } from './libs/k6-summary-0.0.2.js';
+import { parseEnv } from './libs/env-parser.js';
+import { uuidv4 } from './libs/k6-utils-1.4.0.js';

 parseEnv();

-const obj_list = new SharedArray('obj_list', function() {
-  return JSON.parse(open(__ENV.PREGEN_JSON)).objects;
+const obj_list = new SharedArray('obj_list', function () {
+    return JSON.parse(open(__ENV.PREGEN_JSON)).objects;
 });

-const bucket_list = new SharedArray('bucket_list', function() {
-  return JSON.parse(open(__ENV.PREGEN_JSON)).buckets;
+const bucket_list = new SharedArray('bucket_list', function () {
+    return JSON.parse(open(__ENV.PREGEN_JSON)).buckets;
 });

 const read_size = JSON.parse(open(__ENV.PREGEN_JSON)).obj_size;
-const summary_json = __ENV.SUMMARY_JSON || '/tmp/summary.json';
+const summary_json = __ENV.SUMMARY_JSON || "/tmp/summary.json";

 // Select random S3 endpoint for current VU
 const s3_endpoints = __ENV.S3_ENDPOINTS.split(',');
-const s3_endpoint =
-    s3_endpoints[Math.floor(Math.random() * s3_endpoints.length)];
-const no_verify_ssl = __ENV.NO_VERIFY_SSL || 'true';
-const connection_args = {
-  no_verify_ssl: no_verify_ssl
-};
+const s3_endpoint = s3_endpoints[Math.floor(Math.random() * s3_endpoints.length)];
+const no_verify_ssl = __ENV.NO_VERIFY_SSL || "true";
+const connection_args = {no_verify_ssl: no_verify_ssl}
 const s3_client = s3.connect(s3_endpoint, connection_args);
-const log = logging.new().withField('endpoint', s3_endpoint);
+const log = logging.new().withField("endpoint", s3_endpoint);

 const registry_enabled = !!__ENV.REGISTRY_FILE;
-const obj_registry =
-    registry_enabled ? registry.open(__ENV.REGISTRY_FILE) : undefined;
+const obj_registry = registry_enabled ? registry.open(__ENV.REGISTRY_FILE) : undefined;

 const duration = __ENV.DURATION;

-if (!!__ENV.METRIC_TAGS) {
-  stats.setTags(__ENV.METRIC_TAGS)
-}
-
 const delete_age = __ENV.DELETE_AGE ? parseInt(__ENV.DELETE_AGE) : undefined;
 let obj_to_delete_selector = undefined;
 if (registry_enabled && delete_age) {
-  obj_to_delete_selector = registry.getSelector(
-      __ENV.REGISTRY_FILE, 'obj_to_delete',
-      __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0, {
-        status: 'created',
-        age: delete_age,
-      });
+    obj_to_delete_selector = registry.getSelector(
+        __ENV.REGISTRY_FILE,
+        "obj_to_delete",
+        __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0,
+        {
+            status: "created",
+            age: delete_age,
+        }
+    );
 }

-const read_age = __ENV.READ_AGE ? parseInt(__ENV.READ_AGE) : 10;
-let obj_to_read_selector = undefined;
-if (registry_enabled) {
-  obj_to_read_selector = registry.getLoopedSelector(
-      __ENV.REGISTRY_FILE, 'obj_to_read',
-      __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0, {
-        status: 'created',
-        age: read_age,
-      })
-}
+const generator = datagen.generator(1024 * parseInt(__ENV.WRITE_OBJ_SIZE));

 const scenarios = {};

@ -72,18 +56,17 @@ const time_unit = __ENV.TIME_UNIT || '1s';
 const pre_alloc_write_vus = parseInt(__ENV.PRE_ALLOC_WRITERS || '0');
 const max_write_vus = parseInt(__ENV.MAX_WRITERS || pre_alloc_write_vus);
 const write_rate = parseInt(__ENV.WRITE_RATE || '0');
-const generator = newGenerator(write_rate > 0);
 if (write_rate > 0) {
-  scenarios.write = {
-    executor: 'constant-arrival-rate',
-    duration: `${duration}s`,
-    preAllocatedVUs: pre_alloc_write_vus,
-    maxVUs: max_write_vus,
-    rate: write_rate,
-    timeUnit: time_unit,
-    exec: 'obj_write',
-    gracefulStop: '5s',
-  };
+    scenarios.write = {
+        executor: 'constant-arrival-rate',
+        duration: `${duration}s`,
+        preAllocatedVUs: pre_alloc_write_vus,
+        maxVUs: max_write_vus,
+        rate: write_rate,
+        timeUnit: time_unit,
+        exec: 'obj_write', 
+        gracefulStop: '5s',
+    };
 }


@ -91,16 +74,16 @@ const pre_alloc_read_vus = parseInt(__ENV.PRE_ALLOC_READERS || '0');
 const max_read_vus = parseInt(__ENV.MAX_READERS || pre_alloc_read_vus);
 const read_rate = parseInt(__ENV.READ_RATE || '0');
 if (read_rate > 0) {
-  scenarios.read = {
-    executor: 'constant-arrival-rate',
-    duration: `${duration}s`,
-    preAllocatedVUs: pre_alloc_write_vus,
-    maxVUs: max_read_vus,
-    rate: read_rate,
-    timeUnit: time_unit,
-    exec: 'obj_read',
-    gracefulStop: '5s',
-  };
+    scenarios.read = {
+        executor: 'constant-arrival-rate',
+        duration: `${duration}s`,
+        preAllocatedVUs: pre_alloc_write_vus,
+        maxVUs: max_read_vus,
+        rate: read_rate,
+        timeUnit: time_unit,
+        exec: 'obj_read', 
+        gracefulStop: '5s',
+    };
 }


@ -108,132 +91,109 @@ const pre_alloc_delete_vus = parseInt(__ENV.PRE_ALLOC_DELETERS || '0');
 const max_delete_vus = parseInt(__ENV.MAX_DELETERS || pre_alloc_write_vus);
 const delete_rate = parseInt(__ENV.DELETE_RATE || '0');
 if (delete_rate > 0) {
-  if (!obj_to_delete_selector) {
-    throw new Error(
-        'Positive DELETE worker number without a proper object selector');
-  }
+    if (!obj_to_delete_selector) {
+        throw new Error('Positive DELETE worker number without a proper object selector');
+    }

-  scenarios.delete = {
-    executor: 'constant-arrival-rate',
-    duration: `${duration}s`,
-    preAllocatedVUs: pre_alloc_delete_vus,
-    maxVUs: max_delete_vus,
-    rate: delete_rate,
-    timeUnit: time_unit,
-    exec: 'obj_delete',
-    gracefulStop: '5s',
-  };
+    scenarios.delete = {
+        executor: 'constant-arrival-rate',
+        duration: `${duration}s`,
+        preAllocatedVUs: pre_alloc_delete_vus,
+        maxVUs: max_delete_vus,
+        rate: delete_rate,
+        timeUnit: time_unit,
+        exec: 'obj_delete', 
+        gracefulStop: '5s',
+    };
 }

 export const options = {
-  scenarios,
-  setupTimeout: '5s',
+    scenarios,
+    setupTimeout: '5s',
 };

 export function setup() {
-  const total_pre_allocated_vu_count =
-      pre_alloc_write_vus + pre_alloc_read_vus + pre_alloc_delete_vus;
-  const total_max_vu_count = max_read_vus + max_write_vus + max_delete_vus
+    const total_pre_allocated_vu_count = pre_alloc_write_vus + pre_alloc_read_vus + pre_alloc_delete_vus;
+    const total_max_vu_count = max_read_vus + max_write_vus + max_delete_vus

-  console.log(`Pregenerated buckets:          ${bucket_list.length}`);
-  console.log(`Pregenerated read object size: ${read_size}`);
-  console.log(`Pregenerated total objects:    ${obj_list.length}`);
-  console.log(`Pre allocated reading VUs:     ${pre_alloc_read_vus}`);
-  console.log(`Pre allocated writing VUs:     ${pre_alloc_write_vus}`);
-  console.log(`Pre allocated deleting VUs:    ${pre_alloc_delete_vus}`);
-  console.log(`Total pre allocated VUs:       ${total_pre_allocated_vu_count}`);
-  console.log(`Max reading VUs:               ${max_read_vus}`);
-  console.log(`Max writing VUs:               ${max_write_vus}`);
-  console.log(`Max deleting VUs:              ${max_delete_vus}`);
-  console.log(`Total max VUs:                 ${total_max_vu_count}`);
-  console.log(`Time unit:                     ${time_unit}`);
-  console.log(`Read rate:                     ${read_rate}`);
-  console.log(`Writing rate:                  ${write_rate}`);
-  console.log(`Delete rate:                   ${delete_rate}`);
-
-  const start_timestamp = Date.now()
-  console.log(
-      `Load started at:               ${Date(start_timestamp).toString()}`)
+    console.log(`Pregenerated buckets:          ${bucket_list.length}`);
+    console.log(`Pregenerated read object size: ${read_size}`);
+    console.log(`Pregenerated total objects:    ${obj_list.length}`);
+    console.log(`Pre allocated reading VUs:     ${pre_alloc_read_vus}`);
+    console.log(`Pre allocated writing VUs:     ${pre_alloc_write_vus}`);
+    console.log(`Pre allocated deleting VUs:    ${pre_alloc_delete_vus}`);
+    console.log(`Total pre allocated VUs:       ${total_pre_allocated_vu_count}`);
+    console.log(`Max reading VUs:               ${max_read_vus}`);
+    console.log(`Max writing VUs:               ${max_write_vus}`);
+    console.log(`Max deleting VUs:              ${max_delete_vus}`);
+    console.log(`Total max VUs:                 ${total_max_vu_count}`);
+    console.log(`Time unit:                     ${time_unit}`);
+    console.log(`Read rate:                     ${read_rate}`);
+    console.log(`Writing rate:                  ${write_rate}`);
+    console.log(`Delete rate:                   ${delete_rate}`);
 }

 export function teardown(data) {
-  if (obj_registry) {
-    obj_registry.close();
-  }
-  const end_timestamp = Date.now()
-  console.log(
-      `Load finished at:              ${Date(end_timestamp).toString()}`)
+    if (obj_registry) {
+        obj_registry.close();
+    }
 }

 export function handleSummary(data) {
-  return {
-    'stdout': textSummary(data, {indent: ' ', enableColors: false}),
-    [summary_json]: JSON.stringify(data),
-  };
-}
+    return {
+        'stdout': textSummary(data, { indent: ' ', enableColors: false }),
+        [summary_json]: JSON.stringify(data),
+    };
+  }

 export function obj_write() {
-  if (__ENV.SLEEP_WRITE) {
-    sleep(__ENV.SLEEP_WRITE);
-  }
+    if (__ENV.SLEEP_WRITE) {
+        sleep(__ENV.SLEEP_WRITE);
+    }

-  const key = __ENV.OBJ_NAME || uuidv4();
-  const bucket = bucket_list[Math.floor(Math.random() * bucket_list.length)];
+    const key = __ENV.OBJ_NAME || uuidv4();
+    const bucket = bucket_list[Math.floor(Math.random() * bucket_list.length)];

-  const payload = generator.genPayload();
-  const resp = s3_client.put(bucket, key, payload);
-  if (!resp.success) {
-    log.withFields({bucket: bucket, key: key}).error(resp.error);
-    return;
-  }
+    const { payload, hash } = generator.genPayload(registry_enabled);
+    const resp = s3_client.put(bucket, key, payload);
+    if (!resp.success) {
+        log.withFields({bucket: bucket, key: key}).error(resp.error);
+        return;
+    }

-  if (obj_registry) {
-    obj_registry.addObject('', '', bucket, key, payload.hash());
-  }
+    if (obj_registry) {
+        obj_registry.addObject("", "", bucket, key, hash);
+    }
 }

 export function obj_read() {
-  if (__ENV.SLEEP_READ) {
-    sleep(__ENV.SLEEP_READ);
-  }
-
-  if (obj_to_read_selector) {
-    const obj = obj_to_read_selector.nextObject();
-    if (!obj) {
-      return;
+    if (__ENV.SLEEP_READ) {
+        sleep(__ENV.SLEEP_READ);
    }
-    const resp = s3_client.get(obj.s3_bucket, obj.s3_key)
+
+    const obj = obj_list[Math.floor(Math.random() * obj_list.length)];
+
+    const resp = s3_client.get(obj.bucket, obj.object);
    if (!resp.success) {
-      log.withFields({bucket: obj.s3_bucket, key: obj.s3_key})
-          .error(resp.error);
-    }
-    return
-  }
-
-  const obj = obj_list[Math.floor(Math.random() * obj_list.length)];
-
-  const resp = s3_client.get(obj.bucket, obj.object);
-  if (!resp.success) {
-    log.withFields({bucket: obj.bucket, key: obj.object}).error(resp.error);
-  }
+        log.withFields({bucket: obj.bucket, key: obj.object}).error(resp.error);
+    } 
 }

 export function obj_delete() {
-  if (__ENV.SLEEP_DELETE) {
-    sleep(__ENV.SLEEP_DELETE);
-  }
+    if (__ENV.SLEEP_DELETE) {
+        sleep(__ENV.SLEEP_DELETE);
+    }

-  const obj = obj_to_delete_selector.nextObject();
-  if (!obj) {
-    return;
-  }
+    const obj = obj_to_delete_selector.nextObject();
+    if (!obj) {
+        return;
+    }

-  const resp = s3_client.delete(obj.s3_bucket, obj.s3_key);
-  if (!resp.success) {
-    log.withFields({bucket: obj.s3_bucket, key: obj.s3_key, op: 'DELETE'})
-        .error(resp.error);
-    return;
-  }
+    const resp = s3_client.delete(obj.s3_bucket, obj.s3_key);
+    if (!resp.success) {
+        log.withFields({bucket: obj.s3_bucket, key: obj.s3_key, op: "DELETE"}).error(resp.error);
+        return;
+    }

-  obj_registry.deleteObject(obj.id);
+    obj_registry.deleteObject(obj.id);
 }
--- a/scenarios/s3_dar.js
+++ b/scenarios/s3_dar.js
@ -1,233 +0,0 @@
-import {sleep} from 'k6';
-import {SharedArray} from 'k6/data';
-import exec from 'k6/execution';
-import logging from 'k6/x/frostfs/logging';
-import registry from 'k6/x/frostfs/registry';
-import s3 from 'k6/x/frostfs/s3';
-import stats from 'k6/x/frostfs/stats';
-
-import {newGenerator} from './libs/datagen.js';
-import {parseEnv} from './libs/env-parser.js';
-import {textSummary} from './libs/k6-summary-0.0.2.js';
-import {uuidv4} from './libs/k6-utils-1.4.0.js';
-
-parseEnv();
-
-const obj_list = new SharedArray(
-    'obj_list',
-    function() { return JSON.parse(open(__ENV.PREGEN_JSON)).objects; });
-
-const bucket_list = new SharedArray(
-    'bucket_list',
-    function() { return JSON.parse(open(__ENV.PREGEN_JSON)).buckets; });
-
-const read_size = JSON.parse(open(__ENV.PREGEN_JSON)).obj_size;
-const summary_json = __ENV.SUMMARY_JSON || '/tmp/summary.json';
-
-const no_verify_ssl = __ENV.NO_VERIFY_SSL || 'true';
-
-const connection_args = {
-    no_verify_ssl : no_verify_ssl
-}
-// Select random S3 endpoint for current VU
-const s3_endpoints = __ENV.S3_ENDPOINTS.split(',');
-const s3_endpoint =
-    s3_endpoints[Math.floor(Math.random() * s3_endpoints.length)];
-const s3_client = s3.connect(s3_endpoint, connection_args);
-const log = logging.new().withField('endpoint', s3_endpoint);
-
-const registry_enabled = !!__ENV.REGISTRY_FILE;
-const obj_registry =
-    registry_enabled ? registry.open(__ENV.REGISTRY_FILE) : undefined;
-
-const duration = __ENV.DURATION;
-
-if (!!__ENV.METRIC_TAGS) {
-    stats.setTags(__ENV.METRIC_TAGS)
-}
-
-const read_age = __ENV.READ_AGE ? parseInt(__ENV.READ_AGE) : 10;
-let obj_to_read_selector = undefined;
-if (registry_enabled) {
-    obj_to_read_selector = registry.getSelector(
-        __ENV.REGISTRY_FILE, 'obj_to_read',
-        __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0, {
-            status : 'created',
-            age : read_age,
-        })
-}
-
-const scenarios = {};
-
-const write_vu_count = parseInt(__ENV.WRITERS || '0');
-const generator = newGenerator(write_vu_count > 0);
-if (write_vu_count > 0) {
-    scenarios.write = {
-        executor : 'constant-vus',
-        vus : write_vu_count,
-        duration : `${duration}s`,
-        exec : 'obj_write',
-        gracefulStop : '5s',
-    };
-}
-
-const read_vu_count = parseInt(__ENV.READERS || '0');
-if (read_vu_count > 0) {
-    scenarios.read = {
-        executor : 'constant-vus',
-        vus : read_vu_count,
-        duration : `${duration}s`,
-        exec : 'obj_read',
-        gracefulStop : '5s',
-    };
-}
-
-const delete_age = __ENV.DELETE_AGE ? parseInt(__ENV.DELETE_AGE) : undefined;
-let obj_to_delete_selector = undefined;
-let obj_to_delete_exit_on_null = undefined;
-
-if (registry_enabled ) {
-    obj_to_delete_exit_on_null = (write_vu_count == 0) && (read_vu_count == 0)
-
-    let constructor = obj_to_delete_exit_on_null ? registry.getOneshotSelector
-        : registry.getSelector;
-
-    obj_to_delete_selector =
-        constructor(__ENV.REGISTRY_FILE, 'obj_to_delete',
-            __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0, {
-                status : 'read',
-                age : delete_age,
-            });
-}
-
-
-
-const delete_vu_count = parseInt(__ENV.DELETERS || '0');
-if (delete_vu_count > 0) {
-    if (!obj_to_delete_selector) {
-        throw 'Positive DELETE worker number without a proper object selector';
-    }
-
-    scenarios.delete = {
-        executor : 'constant-vus',
-        vus : delete_vu_count,
-        duration : `${duration}s`,
-        exec : 'obj_delete',
-        gracefulStop : '5s',
-    };
-}
-
-export const options = {
-    scenarios,
-    setupTimeout : '5s',
-};
-
-export function setup() {
-    const total_vu_count = write_vu_count + read_vu_count + delete_vu_count;
-
-    console.log(`Pregenerated buckets:          ${bucket_list.length}`);
-    console.log(`Pregenerated read object size: ${read_size}`);
-    console.log(`Pregenerated total objects:    ${obj_list.length}`);
-    console.log(`Reading VUs:                   ${read_vu_count}`);
-    console.log(`Writing VUs:                   ${write_vu_count}`);
-    console.log(`Deleting VUs:                  ${delete_vu_count}`);
-    console.log(`Total VUs:                     ${total_vu_count}`);
-
-    const start_timestamp = Date.now()
-    console.log(
-        `Load started at:               ${Date(start_timestamp).toString()}`)
-}
-
-export function teardown(data) {
-    if (obj_registry) {
-        obj_registry.close();
-    }
-    const end_timestamp = Date.now()
-    console.log(
-        `Load finished at:              ${Date(end_timestamp).toString()}`)
-}
-
-export function handleSummary(data) {
-    return {
-        'stdout' : textSummary(data, {indent : ' ', enableColors : false}),
-        [summary_json] : JSON.stringify(data),
-    };
-}
-
-export function obj_write() {
-    if (__ENV.SLEEP_WRITE) {
-        sleep(__ENV.SLEEP_WRITE);
-    }
-
-    const key = __ENV.OBJ_NAME || uuidv4();
-    const bucket = bucket_list[Math.floor(Math.random() * bucket_list.length)];
-
-    const payload = generator.genPayload();
-    const resp = s3_client.put(bucket, key, payload);
-    if (!resp.success) {
-        log.withFields({bucket : bucket, key : key}).error(resp.error);
-        return;
-    }
-
-    if (obj_registry) {
-        obj_registry.addObject('', '', bucket, key, payload.hash());
-    }
-}
-
-export function obj_read() {
-    if (__ENV.SLEEP_READ) {
-        sleep(__ENV.SLEEP_READ);
-    }
-
-    if (obj_to_read_selector) {
-        const obj = obj_to_read_selector.nextObject();
-        if (!obj  ) {
-            return;
-        }
-        const resp = s3_client.get(obj.s3_bucket, obj.s3_key)
-        if (!resp.success) {
-            log.withFields({bucket : obj.s3_bucket, key : obj.s3_key, status: obj.status, op: `READ`})
-                .error(resp.error);
-        } else {
-            obj_registry.setObjectStatus(obj.id, obj.status, 'read');
-        }
-
-        return
-    }
-
-    const obj = obj_list[Math.floor(Math.random() * obj_list.length)];
-
-    const resp = s3_client.get(obj.bucket, obj.object);
-    if (!resp.success) {
-        log.withFields({bucket : obj.bucket, key : obj.object}).error(resp.error);
-    } else {
-        obj_registry.setObjectStatus(obj.id, obj.status, 'read');
-    }
-}
-
-export function obj_delete() {
-    if (__ENV.SLEEP_DELETE) {
-        sleep(__ENV.SLEEP_DELETE);
-    }
-
-    const obj = obj_to_delete_selector.nextObject();
-    delete_object(obj)
-}
-
-export function delete_object(obj) {
-    if (!obj) {
-        if (obj_to_delete_exit_on_null) {
-            exec.test.abort("No more objects to select");
-        }
-        return;
-    }
-
-    const resp = s3_client.delete(obj.s3_bucket, obj.s3_key);
-    if (!resp.success) {
-        log.withFields({bucket : obj.s3_bucket, key : obj.s3_key, op : 'DELETE'})
-            .error(resp.error);
-        return;
-    }
-
-    obj_registry.deleteObject(obj.id);
-}
--- a/scenarios/s3_multipart.js
+++ b/scenarios/s3_multipart.js
@ -1,119 +1,108 @@
-import {sleep} from 'k6';
-import {SharedArray} from 'k6/data';
+import datagen from 'k6/x/frostfs/datagen';
 import logging from 'k6/x/frostfs/logging';
 import registry from 'k6/x/frostfs/registry';
 import s3 from 'k6/x/frostfs/s3';
-import stats from 'k6/x/frostfs/stats';
-
-import {newGenerator} from './libs/datagen.js';
-import {parseEnv} from './libs/env-parser.js';
+import {SharedArray} from 'k6/data';
+import {sleep} from 'k6';
 import {textSummary} from './libs/k6-summary-0.0.2.js';
+import {parseEnv} from './libs/env-parser.js';
 import {uuidv4} from './libs/k6-utils-1.4.0.js';

 parseEnv();

-const bucket_list = new SharedArray('bucket_list', function() {
-  return JSON.parse(open(__ENV.PREGEN_JSON)).buckets;
+const obj_list = new SharedArray('obj_list', function () {
+    return JSON.parse(open(__ENV.PREGEN_JSON)).objects;
 });

-const summary_json = __ENV.SUMMARY_JSON || '/tmp/summary.json';
+const bucket_list = new SharedArray('bucket_list', function () {
+    return JSON.parse(open(__ENV.PREGEN_JSON)).buckets;
+});
+
+const read_size = JSON.parse(open(__ENV.PREGEN_JSON)).obj_size;
+const summary_json = __ENV.SUMMARY_JSON || "/tmp/summary.json";

 // Select random S3 endpoint for current VU
 const s3_endpoints = __ENV.S3_ENDPOINTS.split(',');
-const s3_endpoint =
-    s3_endpoints[Math.floor(Math.random() * s3_endpoints.length)];
-const no_verify_ssl = __ENV.NO_VERIFY_SSL || 'true';
-const connection_args = {
-  no_verify_ssl: no_verify_ssl
-};
-const s3_client = s3.connect(s3_endpoint, connection_args);
-const log = logging.new().withField('endpoint', s3_endpoint);
+const s3_endpoint = s3_endpoints[Math.floor(Math.random() * s3_endpoints.length)];
+const s3_client = s3.connect(`http://${s3_endpoint}`);
+const log = logging.new().withField("endpoint", s3_endpoint);

 const registry_enabled = !!__ENV.REGISTRY_FILE;
-const obj_registry =
-    registry_enabled ? registry.open(__ENV.REGISTRY_FILE) : undefined;
+const obj_registry = registry_enabled ? registry.open(__ENV.REGISTRY_FILE) : undefined;

 const duration = __ENV.DURATION;

-if (!!__ENV.METRIC_TAGS) {
-  stats.setTags(__ENV.METRIC_TAGS)
-}
+const generator = datagen.generator(1024 * parseInt(__ENV.WRITE_OBJ_SIZE), __ENV.PAYLOAD_TYPE || "");

 const scenarios = {};

-const write_vu_count = parseInt(__ENV.WRITERS || '0');
-if (write_vu_count < 1) {
-  throw 'number of VUs (env WRITERS) performing write operations should be greater than 0';
-}
-
+// write parts in parallel
 const write_multipart_vu_count = parseInt(__ENV.WRITERS_MULTIPART || '0');
 if (write_multipart_vu_count < 1) {
-  throw 'number of parts (env WRITERS_MULTIPART) to upload in parallel should be greater than 0';
+    throw 'number of parts to upload in parallel should be greater than 0';
+}
+const write_vu_count = parseInt(__ENV.WRITERS || '0');
+if (write_vu_count < 1) {
+    throw 'number of VUs performing write operations should be greater than 0';
 }
-
-const generator =
-    newGenerator(write_vu_count > 0 || write_multipart_vu_count > 0);
 if (write_vu_count > 0) {
-  scenarios.write_multipart = {
-    executor: 'constant-vus',
-    vus: write_vu_count,
-    duration: `${duration}s`,
-    exec: 'obj_write_multipart',
-    gracefulStop: '5s',
-  };
+    scenarios.write = {
+        executor: 'constant-vus',
+        vus: write_vu_count,
+        duration: `${duration}s`,
+        exec: 'obj_write_multipart',
+        gracefulStop: '5s',
+    };
 }

 export const options = {
-  scenarios,
-  setupTimeout: '5s',
+    scenarios,
+    setupTimeout: '5s',
 };

 export function setup() {
-  const total_vu_count = write_vu_count * write_multipart_vu_count;
+    const total_vu_count = write_vu_count * write_multipart_vu_count;

-  console.log(`Pregenerated buckets:          ${bucket_list.length}`);
-  console.log(`Writing VUs:                   ${write_vu_count}`);
-  console.log(`Writing multipart VUs:         ${write_multipart_vu_count}`);
-  console.log(`Total VUs:                     ${total_vu_count}`);
+    console.log(`Pregenerated buckets:          ${bucket_list.length}`);
+    console.log(`Pregenerated read object size: ${read_size}`);
+    console.log(`Pregenerated total objects:    ${obj_list.length}`);
+    console.log(`Writing VUs:                   ${write_vu_count}`);
+    console.log(`Writing multipart VUs:         ${write_multipart_vu_count}`);
+    console.log(`Total VUs:                     ${total_vu_count}`);
 }

 export function teardown(data) {
-  if (obj_registry) {
-    obj_registry.close();
-  }
+    if (obj_registry) {
+        obj_registry.close();
+    }
 }

 export function handleSummary(data) {
-  return {
-    'stdout': textSummary(data, {indent: ' ', enableColors: false}),
-    [summary_json]: JSON.stringify(data),
-  };
+    return {
+        'stdout': textSummary(data, {indent: ' ', enableColors: false}),
+        [summary_json]: JSON.stringify(data),
+    };
 }

-const write_multipart_part_size =
-    1024 * parseInt(__ENV.WRITE_OBJ_PART_SIZE || '0')
-if (write_multipart_part_size < 5 * 1024 * 1024) {
-  throw 'part size (env WRITE_OBJ_PART_SIZE * 1024) must be greater than (5 MB)';
-}
+const write_multipart_part_size = 1024 * parseInt(__ENV.WRITE_OBJ_PART_SIZE || '0')

 export function obj_write_multipart() {
-  if (__ENV.SLEEP_WRITE) {
-    sleep(__ENV.SLEEP_WRITE);
-  }
+    if (__ENV.SLEEP_WRITE) {
+        sleep(__ENV.SLEEP_WRITE);
+    }

-  const key = __ENV.OBJ_NAME || uuidv4();
-  const bucket = bucket_list[Math.floor(Math.random() * bucket_list.length)];
+    const key = __ENV.OBJ_NAME || uuidv4();
+    const bucket = bucket_list[Math.floor(Math.random() * bucket_list.length)];

-  const payload = generator.genPayload();
-  const resp = s3_client.multipart(
-      bucket, key, write_multipart_part_size, write_multipart_vu_count,
-      payload);
-  if (!resp.success) {
-    log.withFields({bucket: bucket, key: key}).error(resp.error);
-    return;
-  }
+    const {payload, hash} = generator.genPayload(registry_enabled);
+    const resp = s3_client.multipart(bucket, key, write_multipart_part_size, payload, write_multipart_vu_count);
+    if (!resp.success) {
+        log.withFields({bucket: bucket, key: key}).error(resp.error);
+        return;
+    }

-  if (obj_registry) {
-    obj_registry.addObject('', '', bucket, key, payload.hash());
-  }
+    if (obj_registry) {
+        obj_registry.addObject("", "", bucket, key, hash);
+    }
 }
+
--- a/scenarios/s3local.js
+++ b/scenarios/s3local.js
@ -1,172 +1,127 @@
-import {SharedArray} from 'k6/data';
-import exec from 'k6/execution';
+import datagen from 'k6/x/frostfs/datagen';
 import logging from 'k6/x/frostfs/logging';
 import registry from 'k6/x/frostfs/registry';
 import s3local from 'k6/x/frostfs/s3local';
-import stats from 'k6/x/frostfs/stats';
-
-import {newGenerator} from './libs/datagen.js';
-import {parseEnv} from './libs/env-parser.js';
-import {textSummary} from './libs/k6-summary-0.0.2.js';
-import {uuidv4} from './libs/k6-utils-1.4.0.js';
+import { SharedArray } from 'k6/data';
+import { textSummary } from './libs/k6-summary-0.0.2.js';
+import { parseEnv } from './libs/env-parser.js';
+import { uuidv4 } from './libs/k6-utils-1.4.0.js';

 parseEnv();

-const obj_list = new SharedArray('obj_list', function() {
-  return JSON.parse(open(__ENV.PREGEN_JSON)).objects;
+const obj_list = new SharedArray('obj_list', function () {
+    return JSON.parse(open(__ENV.PREGEN_JSON)).objects;
 });

-const container_list = new SharedArray('container_list', function() {
-  return JSON.parse(open(__ENV.PREGEN_JSON)).containers;
+const container_list = new SharedArray('container_list', function () {
+    return JSON.parse(open(__ENV.PREGEN_JSON)).containers;
 });

-const bucket_list = new SharedArray('bucket_list', function() {
-  return JSON.parse(open(__ENV.PREGEN_JSON)).buckets;
+const bucket_list = new SharedArray('bucket_list', function () {
+    return JSON.parse(open(__ENV.PREGEN_JSON)).buckets;
 });

 function bucket_mapping() {
-  if (container_list.length != bucket_list.length) {
-    throw 'The number of containers and buckets in the preset file must be the same.';
-  }
-  let mapping = {};
-  for (let i = 0; i < container_list.length; ++i) {
-    mapping[bucket_list[i]] = container_list[i];
-  }
-  return mapping;
+    if (container_list.length != bucket_list.length) {
+        throw 'The number of containers and buckets in the preset file must be the same.';
+    }
+    let mapping = {};
+    for (let i = 0; i < container_list.length; ++i) {
+        mapping[bucket_list[i]] = container_list[i];
+    }
+    return mapping;
 }

 const read_size = JSON.parse(open(__ENV.PREGEN_JSON)).obj_size;
-const summary_json = __ENV.SUMMARY_JSON || '/tmp/summary.json';
+const summary_json = __ENV.SUMMARY_JSON || "/tmp/summary.json";

 const config_file = __ENV.CONFIG_FILE;
-const config_dir = __ENV.CONFIG_DIR;
-const max_total_size_gb =
-    __ENV.MAX_TOTAL_SIZE_GB ? parseInt(__ENV.MAX_TOTAL_SIZE_GB) : 0;
-const s3_client = s3local.connect(
-    config_file, config_dir, {
-      'debug_logger': __ENV.DEBUG_LOGGER || 'false',
-    },
-    bucket_mapping(), max_total_size_gb);
-const log = logging.new().withFields(
-    {'config_file': config_file, 'config_dir': config_dir});
-
-if (!!__ENV.METRIC_TAGS) {
-  stats.setTags(__ENV.METRIC_TAGS)
-}
+const s3_client = s3local.connect(config_file, {
+    'debug_logger': __ENV.DEBUG_LOGGER || 'false',
+}, bucket_mapping());
+const log = logging.new().withField("config", config_file);

 const registry_enabled = !!__ENV.REGISTRY_FILE;
-const obj_registry =
-    registry_enabled ? registry.open(__ENV.REGISTRY_FILE) : undefined;
-
-let obj_to_read_selector = undefined;
-if (registry_enabled) {
-  obj_to_read_selector = registry.getLoopedSelector(
-      __ENV.REGISTRY_FILE, 'obj_to_read',
-      __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0, {
-        status: 'created',
-      })
-}
+const obj_registry = registry_enabled ? registry.open(__ENV.REGISTRY_FILE) : undefined;

 const duration = __ENV.DURATION;

+const generator = datagen.generator(1024 * parseInt(__ENV.WRITE_OBJ_SIZE));
+
 const scenarios = {};

 const write_vu_count = parseInt(__ENV.WRITERS || '0');
-const generator = newGenerator(write_vu_count > 0);
 if (write_vu_count > 0) {
-  scenarios.write = {
-    executor: 'constant-vus',
-    vus: write_vu_count,
-    duration: `${duration}s`,
-    exec: 'obj_write',
-    gracefulStop: '5s',
-  };
+    scenarios.write = {
+        executor: 'constant-vus',
+        vus: write_vu_count,
+        duration: `${duration}s`,
+        exec: 'obj_write', 
+        gracefulStop: '5s',
+    };
 }

 const read_vu_count = parseInt(__ENV.READERS || '0');
 if (read_vu_count > 0) {
-  scenarios.read = {
-    executor: 'constant-vus',
-    vus: read_vu_count,
-    duration: `${duration}s`,
-    exec: 'obj_read',
-    gracefulStop: '5s',
-  };
+    scenarios.read = {
+        executor: 'constant-vus',
+        vus: read_vu_count,
+        duration: `${duration}s`,
+        exec: 'obj_read', 
+        gracefulStop: '5s',
+    };
 }

 export const options = {
-  scenarios,
-  setupTimeout: '5s',
+    scenarios,
+    setupTimeout: '5s',
 };

 export function setup() {
-  const total_vu_count = write_vu_count + read_vu_count;
+    const total_vu_count = write_vu_count + read_vu_count;

-  console.log(`Pregenerated buckets:          ${bucket_list.length}`);
-  console.log(`Pregenerated read object size: ${read_size}`);
-  console.log(`Pregenerated total objects:    ${obj_list.length}`);
-  console.log(`Reading VUs:                   ${read_vu_count}`);
-  console.log(`Writing VUs:                   ${write_vu_count}`);
-  console.log(`Total VUs:                     ${total_vu_count}`);
-
-  const start_timestamp = Date.now()
-  console.log(
-      `Load started at:               ${Date(start_timestamp).toString()}`)
+    console.log(`Pregenerated buckets:          ${bucket_list.length}`);
+    console.log(`Pregenerated read object size: ${read_size}`);
+    console.log(`Pregenerated total objects:    ${obj_list.length}`);
+    console.log(`Reading VUs:                   ${read_vu_count}`);
+    console.log(`Writing VUs:                   ${write_vu_count}`);
+    console.log(`Total VUs:                     ${total_vu_count}`);
 }

 export function teardown(data) {
-  if (obj_registry) {
-    obj_registry.close();
-  }
-  const end_timestamp = Date.now()
-  console.log(
-      `Load finished at:              ${Date(end_timestamp).toString()}`)
+    if (obj_registry) {
+        obj_registry.close();
+    }
 }

 export function handleSummary(data) {
-  return {
-    'stdout': textSummary(data, {indent: ' ', enableColors: false}),
-    [summary_json]: JSON.stringify(data),
-  };
-}
+    return {
+        'stdout': textSummary(data, { indent: ' ', enableColors: false }),
+        [summary_json]: JSON.stringify(data),
+    };
+  }

 export function obj_write() {
-  const key = __ENV.OBJ_NAME || uuidv4();
-  const bucket = bucket_list[Math.floor(Math.random() * bucket_list.length)];
+    const key = __ENV.OBJ_NAME || uuidv4();
+    const bucket = bucket_list[Math.floor(Math.random() * bucket_list.length)];

-  const payload = generator.genPayload();
-  const resp = s3_client.put(bucket, key, payload);
-  if (!resp.success) {
-    if (resp.abort) {
-      exec.test.abort(resp.error);
+    const { payload, hash } = generator.genPayload(registry_enabled);
+    const resp = s3_client.put(bucket, key, payload);
+    if (!resp.success) {
+        log.withFields({bucket: bucket, key: key}).error(resp.error);
+        return;
    }
-    log.withFields({bucket: bucket, key: key}).error(resp.error);
-    return;
-  }

-  if (obj_registry) {
-    obj_registry.addObject('', '', bucket, key, payload.hash());
-  }
+    if (obj_registry) {
+        obj_registry.addObject("", "", bucket, key, hash);
+    }
 }

 export function obj_read() {
-  if (obj_to_read_selector) {
-    const obj = obj_to_read_selector.nextObject();
-    if (!obj) {
-      return;
-    }
-    const resp = s3_client.get(obj.s3_bucket, obj.s3_key)
+    const obj = obj_list[Math.floor(Math.random() * obj_list.length)];
+
+    const resp = s3_client.get(obj.bucket, obj.object);
    if (!resp.success) {
-      log.withFields({bucket: obj.s3_bucket, key: obj.s3_key})
-          .error(resp.error);
-    }
-    return
-  }
-
-  const obj = obj_list[Math.floor(Math.random() * obj_list.length)];
-
-  const resp = s3_client.get(obj.bucket, obj.object);
-  if (!resp.success) {
-    log.withFields({bucket: obj.bucket, key: obj.object}).error(resp.error);
-  }
+        log.withFields({bucket: obj.bucket, key: obj.object}).error(resp.error);
+    } 
 }
--- a/scenarios/verify.js
+++ b/scenarios/verify.js
@ -1,21 +1,19 @@
-import { sleep } from 'k6';
-import { Counter } from 'k6/metrics';
-import logging from 'k6/x/frostfs/logging';
 import native from 'k6/x/frostfs/native';
 import registry from 'k6/x/frostfs/registry';
 import s3 from 'k6/x/frostfs/s3';
-import stats from 'k6/x/frostfs/stats';
-
-import { parseEnv } from './libs/env-parser.js';
+import logging from 'k6/x/frostfs/logging';
+import { sleep } from 'k6';
+import { Counter } from 'k6/metrics';
 import { textSummary } from './libs/k6-summary-0.0.2.js';
+import { parseEnv } from './libs/env-parser.js';

 parseEnv();

 const obj_registry = registry.open(__ENV.REGISTRY_FILE);

 // Time limit (in seconds) for the run
-const time_limit = __ENV.TIME_LIMIT || '60';
-const summary_json = __ENV.SUMMARY_JSON || '/tmp/summary.json';
+const time_limit = __ENV.TIME_LIMIT || "60";
+const summary_json = __ENV.SUMMARY_JSON || "/tmp/summary.json";

 // Number of objects in each status. These counters are cumulative in a
 // sense that they reflect total number of objects in the registry, not just
@ -23,147 +21,140 @@ const summary_json = __ENV.SUMMARY_JSON || '/tmp/summary.json';
 // This allows to run this scenario multiple times and collect overall
 // statistics in the final run.
 const obj_counters = {
-  verified: new Counter('verified_obj'),
-  skipped: new Counter('skipped_obj'),
-  invalid: new Counter('invalid_obj'),
+    verified: new Counter('verified_obj'),
+    skipped: new Counter('skipped_obj'),
+    invalid: new Counter('invalid_obj'),
 };

 let log = logging.new();

-if (!!__ENV.METRIC_TAGS) {
-  stats.setTags(__ENV.METRIC_TAGS)
-}
-
 // Connect to random gRPC endpoint
 let grpc_client = undefined;
 if (__ENV.GRPC_ENDPOINTS) {
-  const grpcEndpoints = __ENV.GRPC_ENDPOINTS.split(',');
-  const grpcEndpoint =
-    grpcEndpoints[Math.floor(Math.random() * grpcEndpoints.length)];
-  log = log.withField('endpoint', grpcEndpoint);
-  grpc_client = native.connect(
-    grpcEndpoint, '', __ENV.DIAL_TIMEOUT ? parseInt(__ENV.DIAL_TIMEOUT) : 0,
-    __ENV.STREAM_TIMEOUT ? parseInt(__ENV.STREAM_TIMEOUT) : 0,
-    __ENV.PREPARE_LOCALLY ? __ENV.PREPARE_LOCALLY.toLowerCase() === 'true' : false,
-    1024 * parseInt(__ENV.MAX_OBJECT_SIZE || '0'));
+    const grpcEndpoints = __ENV.GRPC_ENDPOINTS.split(',');
+    const grpcEndpoint = grpcEndpoints[Math.floor(Math.random() * grpcEndpoints.length)];
+    log = log.withField("endpoint", grpcEndpoint);
+    grpc_client = native.connect(grpcEndpoint, '',
+        __ENV.DIAL_TIMEOUT ? parseInt(__ENV.DIAL_TIMEOUT) : 0,
+        __ENV.STREAM_TIMEOUT ? parseInt(__ENV.STREAM_TIMEOUT) : 0,
+        __ENV.PREPARE_LOCALLY ? __ENV.PREPARE_LOCALLY.toLowerCase() === "true" : false, '');
 }

 // Connect to random S3 endpoint
 let s3_client = undefined;
 if (__ENV.S3_ENDPOINTS) {
-  const no_verify_ssl = __ENV.NO_VERIFY_SSL || 'true';
-  const connection_args = { no_verify_ssl: no_verify_ssl };
-  const s3_endpoints = __ENV.S3_ENDPOINTS.split(',');
-  const s3_endpoint =
-    s3_endpoints[Math.floor(Math.random() * s3_endpoints.length)];
-  log = log.withField('endpoint', s3_endpoint);
-  s3_client = s3.connect(s3_endpoint, connection_args);
+    const no_verify_ssl = __ENV.NO_VERIFY_SSL || "true";
+    const connection_args = {no_verify_ssl: no_verify_ssl}
+    const s3_endpoints = __ENV.S3_ENDPOINTS.split(',');
+    const s3_endpoint = s3_endpoints[Math.floor(Math.random() * s3_endpoints.length)];
+    log = log.withField("endpoint", s3_endpoint);
+    s3_client = s3.connect(s3_endpoint, connection_args);
 }

-// We will attempt to verify every object in "created" status. The scenario will
-// execute as many iterations as there are objects. Each object will have 3
-// retries to be verified
+// We will attempt to verify every object in "created" status. The scenario will execute
+// as many iterations as there are objects. Each object will have 3 retries to be verified
 const obj_to_verify_selector = registry.getSelector(
-  __ENV.REGISTRY_FILE, 'obj_to_verify',
-  __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0, {
-  status: 'created',
-});
+    __ENV.REGISTRY_FILE,
+    "obj_to_verify",
+    __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0,
+    {
+        status: "created",
+    }
+);
 const obj_to_verify_count = obj_to_verify_selector.count();
-// Execute at least one iteration (executor shared-iterations can't run 0
-// iterations)
+// Execute at least one iteration (executor shared-iterations can't run 0 iterations)
 const iterations = Math.max(1, obj_to_verify_count);
-// Executor shared-iterations requires number of iterations to be larger than
-// number of VUs
+// Executor shared-iterations requires number of iterations to be larger than number of VUs
 const vus = Math.min(__ENV.CLIENTS, iterations);

 const scenarios = {
-  verify: {
-    executor: 'shared-iterations',
-    vus,
-    iterations,
-    maxDuration: `${time_limit}s`,
-    exec: 'obj_verify',
-    gracefulStop: '5s',
-  }
+    verify: {
+        executor: 'shared-iterations',
+        vus,
+        iterations,
+        maxDuration: `${time_limit}s`,
+        exec: 'obj_verify',
+        gracefulStop: '5s',
+    }
 };

 export const options = {
-  scenarios,
-  setupTimeout: '5s',
+    scenarios,
+    setupTimeout: '5s',
 };

 export function setup() {
-  // Populate counters with initial values
-  for (const [status, counter] of Object.entries(obj_counters)) {
-    const obj_selector = registry.getSelector(
-      __ENV.REGISTRY_FILE, status,
-      __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0, { status });
-    counter.add(obj_selector.count());
-  }
+    // Populate counters with initial values
+    for (const [status, counter] of Object.entries(obj_counters)) {
+        const obj_selector = registry.getSelector(
+            __ENV.REGISTRY_FILE,
+            status,
+            __ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0,
+            { status });
+        counter.add(obj_selector.count());
+    }
 }

 export function handleSummary(data) {
-  return {
-    'stdout': textSummary(data, { indent: ' ', enableColors: false }),
-    [summary_json]: JSON.stringify(data),
-  };
+    return {
+        'stdout': textSummary(data, { indent: ' ', enableColors: false }),
+        [summary_json]: JSON.stringify(data),
+    };
 }

 export function obj_verify() {
-  if (obj_to_verify_count == 0) {
-    log.info('Nothing to verify');
-    return;
-  }
+    if (obj_to_verify_count == 0) {
+        log.info("Nothing to verify");
+        return;
+    }

-  if (__ENV.SLEEP) {
-    sleep(__ENV.SLEEP);
-  }
+    if (__ENV.SLEEP) {
+        sleep(__ENV.SLEEP);
+    }

-  const obj = obj_to_verify_selector.nextObject();
-  if (!obj) {
-    log.info('All objects have been verified');
-    return;
-  }
+    const obj = obj_to_verify_selector.nextObject();
+    if (!obj) {
+        log.info("All objects have been verified");
+        return;
+    }

-  const obj_status = verify_object_with_retries(obj, 3);
-  obj_counters[obj_status].add(1);
-  obj_registry.setObjectStatus(obj.id, obj.status, obj_status);
+    const obj_status = verify_object_with_retries(obj, 3);
+    obj_counters[obj_status].add(1);
+    obj_registry.setObjectStatus(obj.id, obj.status, obj_status);
 }

 function verify_object_with_retries(obj, attempts) {
-  for (let i = 0; i < attempts; i++) {
-    let result;
-    // Different name is required.
-    // ReferenceError: Cannot access a variable before initialization.
-    let lg = log;
-    if (obj.c_id && obj.o_id) {
-      lg = lg.withFields({ cid: obj.c_id, oid: obj.o_id });
-      result = grpc_client.verifyHash(obj.c_id, obj.o_id, obj.payload_hash);
-    } else if (obj.s3_bucket && obj.s3_key) {
-      lg = lg.withFields({ bucket: obj.s3_bucket, key: obj.s3_key });
-      result =
-        s3_client.verifyHash(obj.s3_bucket, obj.s3_key, obj.payload_hash);
-    } else {
-      lg.withFields({
-        cid: obj.c_id,
-        oid: obj.o_id,
-        bucket: obj.s3_bucket,
-        key: obj.s3_key
-      }).warn(`Object cannot be verified with supported protocols`);
-      return 'skipped';
+    for (let i = 0; i < attempts; i++) {
+        let result;
+        // Different name is required.
+        // ReferenceError: Cannot access a variable before initialization.
+        let lg = log;
+        if (obj.c_id && obj.o_id) {
+            lg = lg.withFields({cid: obj.c_id, oid: obj.o_id});
+            result = grpc_client.verifyHash(obj.c_id, obj.o_id, obj.payload_hash);
+        } else if (obj.s3_bucket && obj.s3_key) {
+            lg = lg.withFields({bucket: obj.s3_bucket, key: obj.s3_key});
+            result = s3_client.verifyHash(obj.s3_bucket, obj.s3_key, obj.payload_hash);
+        } else {
+            lg.withFields({
+                cid: obj.c_id,
+                oid: obj.o_id,
+                bucket: obj.s3_bucket,
+                key: obj.s3_key
+            }).warn(`Object cannot be verified with supported protocols`);
+            return "skipped";
+        }
+
+        if (result.success) {
+            return "verified";
+        } else if (result.error == "hash mismatch") {
+            return "invalid";
+        }
+
+        // Unless we explicitly saw that there was a hash mismatch, then we will retry after a delay
+        lg.error(`Verify error: ${result.error}. Object will be re-tried`);
+        sleep(__ENV.SLEEP);
    }

-    if (result.success) {
-      return 'verified';
-    } else if (result.error == 'hash mismatch') {
-      return 'invalid';
-    }
-
-    // Unless we explicitly saw that there was a hash mismatch, then we will
-    // retry after a delay
-    lg.error(`Verify error: ${result.error}. Object will be re-tried`);
-    sleep(__ENV.SLEEP);
-  }
-
-  return 'invalid';
+    return "invalid";
 }
Author	SHA1	Message	Date
Мария Малыгина	bed778da1a	fix errors Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-18 13:01:53 +03:00
Мария Малыгина	fa62446fba	fix errors Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-18 13:00:05 +03:00
Мария Малыгина	87f5f771bc	fix errors Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-18 12:58:46 +03:00
Мария Малыгина	9e5dfc588e	manage dependency Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-18 12:55:21 +03:00
Мария Малыгина	a9de9b319a	throw error if writers < 1 Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-18 12:53:29 +03:00
Мария Малыгина	57f4a0010f	throw error if writers < 1 Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-18 12:32:57 +03:00
Мария Малыгина	9251007cae	throw error if writers < 1 Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-18 12:28:42 +03:00
Мария Малыгина	edc6e31223	fail if concurrencty < 1 Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-18 12:21:41 +03:00
Мария Малыгина	fb7bc09e79	fail test if concurrency = 0 Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-18 12:03:22 +03:00
Мария Малыгина	ad5698c255	format code Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-17 18:32:18 +03:00
Мария Малыгина	a4c2d29eff	add multipart description to scenarios.md Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-17 17:59:21 +03:00
Мария Малыгина	358f613eed	add multipart description to scenarios.md Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-17 17:37:20 +03:00
Мария Малыгина	6b7a27df4f	Fix Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-17 16:33:51 +03:00
Мария Малыгина	88ae8f47a3	Fix body value Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-17 16:28:46 +03:00
Мария Малыгина	00df55340a	Fix Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-17 16:26:59 +03:00
Мария Малыгина	6f01a038e5	Fix setting options Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-17 16:25:14 +03:00
Мария Малыгина	4af4498e32	Fix missing import Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-17 16:19:52 +03:00
Мария Малыгина	c17ff97439	Fix missing return Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-17 16:17:32 +03:00
Мария Малыгина	1443da627c	Fix spelling mistake Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-17 16:16:26 +03:00
Мария Малыгина	46d5c647c0	Fix spelling mistake Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-17 16:13:34 +03:00
Мария Малыгина	d1c6425c92	Support parallel multipart upload Signed-off-by: Мария Малыгина <m.malygina@yadro.com>	2023-07-17 15:46:53 +03:00