[#151] Refactor load report

Signed-off-by: Andrey Berezin <a.berezin@yadro.com>

src/frostfs_testlib/load/interfaces/summarized.py

@@ -0,0 +1,93 @@
+from dataclasses import dataclass, field
+
+from frostfs_testlib.load.load_config import LoadParams, LoadScenario
+from frostfs_testlib.load.load_metrics import get_metrics_object
+
+
+@dataclass
+class SummarizedErorrs:
+    total: int = field(default_factory=int)
+    percent: float = field(default_factory=float)
+    threshold: float = field(default_factory=float)
+    by_node: dict[str, int] = field(default_factory=dict)
+
+    def calc_stats(self, operations):
+        self.total += sum(self.by_node.values())
+
+        if not operations:
+            return
+
+        self.percent = self.total / operations * 100
+
+
+@dataclass
+class SummarizedLatencies:
+    avg: float = field(default_factory=float)
+    min: float = field(default_factory=float)
+    max: float = field(default_factory=float)
+    by_node: dict[str, dict[str, int]] = field(default_factory=dict)
+
+    def calc_stats(self):
+        if not self.by_node:
+            return
+
+        avgs = [lt["avg"] for lt in self.by_node.values()]
+        self.avg = sum(avgs) / len(avgs)
+
+        minimal = [lt["min"] for lt in self.by_node.values()]
+        self.min = min(minimal)
+
+        maximum = [lt["max"] for lt in self.by_node.values()]
+        self.max = max(maximum)
+
+
+@dataclass
+class SummarizedStats:
+    threads: int = field(default_factory=int)
+    requested_rate: int = field(default_factory=int)
+    operations: int = field(default_factory=int)
+    rate: float = field(default_factory=float)
+    throughput: float = field(default_factory=float)
+    latencies: SummarizedLatencies = field(default_factory=SummarizedLatencies)
+    errors: SummarizedErorrs = field(default_factory=SummarizedErorrs)
+    passed: bool = True
+
+    def calc_stats(self):
+        self.errors.calc_stats(self.operations)
+        self.latencies.calc_stats()
+        self.passed = self.errors.percent <= self.errors.threshold
+
+    @staticmethod
+    def collect(load_params: LoadParams, load_summaries: dict) -> dict[str, "SummarizedStats"]:
+        if load_params.scenario in [LoadScenario.gRPC_CAR, LoadScenario.S3_CAR]:
+            delete_vus = max(load_params.preallocated_deleters or 0, load_params.max_deleters or 0)
+            write_vus = max(load_params.preallocated_writers or 0, load_params.max_writers or 0)
+            read_vus = max(load_params.preallocated_readers or 0, load_params.max_readers or 0)
+        else:
+            write_vus = load_params.writers
+            read_vus = load_params.readers
+            delete_vus = load_params.deleters
+
+        summarized = {
+            "Write": SummarizedStats(threads=write_vus, requested_rate=load_params.write_rate),
+            "Read": SummarizedStats(threads=read_vus, requested_rate=load_params.read_rate),
+            "Delete": SummarizedStats(threads=delete_vus, requested_rate=load_params.delete_rate),
+        }
+
+        for node_key, load_summary in load_summaries.items():
+            metrics = get_metrics_object(load_params.scenario, load_summary)
+            for operation in metrics.operations:
+                target = summarized[operation._NAME]
+                if not operation.total_iterations:
+                    continue
+                target.operations += operation.total_iterations
+                target.rate += operation.rate
+                target.latencies.by_node[node_key] = operation.latency
+                target.throughput += operation.throughput
+                if metrics.write.failed_iterations:
+                    target.errors.by_node[node_key] = operation.failed_iterations
+
+        for operation in summarized.values():
+            operation.calc_stats()
+
+        return summarized

src/frostfs_testlib/load/load_metrics.py

@@ -1,95 +1,43 @@
 from abc import ABC
-from typing import Any
+from typing import Any, Optional
 
 from frostfs_testlib.load.load_config import LoadScenario
 
 
-class MetricsBase(ABC):
-    _WRITE_SUCCESS = ""
-    _WRITE_ERRORS = ""
-    _WRITE_THROUGHPUT = "data_sent"
-    _WRITE_LATENCY = ""
-
-    _READ_SUCCESS = ""
-    _READ_ERRORS = ""
-    _READ_LATENCY = ""
-    _READ_THROUGHPUT = "data_received"
-
-    _DELETE_SUCCESS = ""
-    _DELETE_LATENCY = ""
-    _DELETE_ERRORS = ""
+class OperationMetric(ABC):
+    _NAME = ""
+    _SUCCESS = ""
+    _ERRORS = ""
+    _THROUGHPUT = ""
+    _LATENCY = ""
 
     def __init__(self, summary) -> None:
         self.summary = summary
         self.metrics = summary["metrics"]
 
     @property
-    def write_total_iterations(self) -> int:
-        return self._get_metric(self._WRITE_SUCCESS) + self._get_metric(self._WRITE_ERRORS)
+    def total_iterations(self) -> int:
+        return self._get_metric(self._SUCCESS) + self._get_metric(self._ERRORS)
 
     @property
-    def write_success_iterations(self) -> int:
-        return self._get_metric(self._WRITE_SUCCESS)
+    def success_iterations(self) -> int:
+        return self._get_metric(self._SUCCESS)
 
     @property
-    def write_latency(self) -> dict:
-        return self._get_metric(self._WRITE_LATENCY)
+    def latency(self) -> dict:
+        return self._get_metric(self._LATENCY)
 
     @property
-    def write_rate(self) -> float:
-        return self._get_metric_rate(self._WRITE_SUCCESS)
+    def rate(self) -> float:
+        return self._get_metric_rate(self._SUCCESS)
 
     @property
-    def write_failed_iterations(self) -> int:
-        return self._get_metric(self._WRITE_ERRORS)
+    def failed_iterations(self) -> int:
+        return self._get_metric(self._ERRORS)
 
     @property
-    def write_throughput(self) -> float:
-        return self._get_metric_rate(self._WRITE_THROUGHPUT)
-
-    @property
-    def read_total_iterations(self) -> int:
-        return self._get_metric(self._READ_SUCCESS) + self._get_metric(self._READ_ERRORS)
-
-    @property
-    def read_success_iterations(self) -> int:
-        return self._get_metric(self._READ_SUCCESS)
-
-    @property
-    def read_latency(self) -> dict:
-        return self._get_metric(self._READ_LATENCY)
-
-    @property
-    def read_rate(self) -> int:
-        return self._get_metric_rate(self._READ_SUCCESS)
-
-    @property
-    def read_failed_iterations(self) -> int:
-        return self._get_metric(self._READ_ERRORS)
-
-    @property
-    def read_throughput(self) -> float:
-        return self._get_metric_rate(self._READ_THROUGHPUT)
-
-    @property
-    def delete_total_iterations(self) -> int:
-        return self._get_metric(self._DELETE_SUCCESS) + self._get_metric(self._DELETE_ERRORS)
-
-    @property
-    def delete_success_iterations(self) -> int:
-        return self._get_metric(self._DELETE_SUCCESS)
-
-    @property
-    def delete_latency(self) -> dict:
-        return self._get_metric(self._DELETE_LATENCY)
-
-    @property
-    def delete_failed_iterations(self) -> int:
-        return self._get_metric(self._DELETE_ERRORS)
-
-    @property
-    def delete_rate(self) -> int:
-        return self._get_metric_rate(self._DELETE_SUCCESS)
+    def throughput(self) -> float:
+        return self._get_metric_rate(self._THROUGHPUT)
 
     def _get_metric(self, metric: str) -> int:
         metrics_method_map = {
@@ -104,9 +52,7 @@ class MetricsBase(ABC):
         metric = self.metrics[metric]
         metric_type = metric["type"]
         if metric_type not in metrics_method_map:
-            raise Exception(
-                f"Unsupported metric type: {metric_type}, supported: {metrics_method_map.keys()}"
-            )
+            raise Exception(f"Unsupported metric type: {metric_type}, supported: {metrics_method_map.keys()}")
 
         return metrics_method_map[metric_type](metric)
 
@@ -119,9 +65,7 @@ class MetricsBase(ABC):
         metric = self.metrics[metric]
         metric_type = metric["type"]
         if metric_type not in metrics_method_map:
-            raise Exception(
-                f"Unsupported rate metric type: {metric_type}, supported: {metrics_method_map.keys()}"
-            )
+            raise Exception(f"Unsupported rate metric type: {metric_type}, supported: {metrics_method_map.keys()}")
 
         return metrics_method_map[metric_type](metric)
 
@@ -138,63 +82,145 @@ class MetricsBase(ABC):
         return metric["values"]
 
 
+class WriteOperationMetric(OperationMetric):
+    _NAME = "Write"
+    _SUCCESS = ""
+    _ERRORS = ""
+    _THROUGHPUT = "data_sent"
+    _LATENCY = ""
+
+
+class ReadOperationMetric(OperationMetric):
+    _NAME = "Read"
+    _SUCCESS = ""
+    _ERRORS = ""
+    _THROUGHPUT = "data_received"
+    _LATENCY = ""
+
+
+class DeleteOperationMetric(OperationMetric):
+    _NAME = "Delete"
+    _SUCCESS = ""
+    _ERRORS = ""
+    _THROUGHPUT = ""
+    _LATENCY = ""
+
+
+class GrpcWriteOperationMetric(WriteOperationMetric):
+    _SUCCESS = "frostfs_obj_put_total"
+    _ERRORS = "frostfs_obj_put_fails"
+    _LATENCY = "frostfs_obj_put_duration"
+
+
+class GrpcReadOperationMetric(ReadOperationMetric):
+    _SUCCESS = "frostfs_obj_get_total"
+    _ERRORS = "frostfs_obj_get_fails"
+    _LATENCY = "frostfs_obj_get_duration"
+
+
+class GrpcDeleteOperationMetric(DeleteOperationMetric):
+    _SUCCESS = "frostfs_obj_delete_total"
+    _ERRORS = "frostfs_obj_delete_fails"
+    _LATENCY = "frostfs_obj_delete_duration"
+
+
+class S3WriteOperationMetric(WriteOperationMetric):
+    _SUCCESS = "aws_obj_put_total"
+    _ERRORS = "aws_obj_put_fails"
+    _LATENCY = "aws_obj_put_duration"
+
+
+class S3ReadOperationMetric(ReadOperationMetric):
+    _SUCCESS = "aws_obj_get_total"
+    _ERRORS = "aws_obj_get_fails"
+    _LATENCY = "aws_obj_get_duration"
+
+
+class S3DeleteOperationMetric(DeleteOperationMetric):
+    _SUCCESS = "aws_obj_delete_total"
+    _ERRORS = "aws_obj_delete_fails"
+    _LATENCY = "aws_obj_delete_duration"
+
+
+class S3LocalWriteOperationMetric(WriteOperationMetric):
+    _SUCCESS = "s3local_obj_put_total"
+    _ERRORS = "s3local_obj_put_fails"
+    _LATENCY = "s3local_obj_put_duration"
+
+
+class S3LocalReadOperationMetric(ReadOperationMetric):
+    _SUCCESS = "s3local_obj_get_total"
+    _ERRORS = "s3local_obj_get_fails"
+    _LATENCY = "s3local_obj_get_duration"
+
+
+class LocalWriteOperationMetric(WriteOperationMetric):
+    _SUCCESS = "local_obj_put_total"
+    _ERRORS = "local_obj_put_fails"
+    _LATENCY = "local_obj_put_duration"
+
+
+class LocalReadOperationMetric(ReadOperationMetric):
+    _SUCCESS = "local_obj_get_total"
+    _ERRORS = "local_obj_get_fails"
+
+
+class LocalDeleteOperationMetric(DeleteOperationMetric):
+    _SUCCESS = "local_obj_delete_total"
+    _ERRORS = "local_obj_delete_fails"
+
+
+class VerifyReadOperationMetric(ReadOperationMetric):
+    _SUCCESS = "verified_obj"
+    _ERRORS = "invalid_obj"
+
+
+class MetricsBase(ABC):
+    def __init__(self) -> None:
+        self.write: Optional[WriteOperationMetric] = None
+        self.read: Optional[ReadOperationMetric] = None
+        self.delete: Optional[DeleteOperationMetric] = None
+
+    @property
+    def operations(self) -> list[OperationMetric]:
+        return [metric for metric in [self.write, self.read, self.delete] if metric is not None]
+
+
 class GrpcMetrics(MetricsBase):
-    _WRITE_SUCCESS = "frostfs_obj_put_total"
-    _WRITE_ERRORS = "frostfs_obj_put_fails"
-    _WRITE_LATENCY = "frostfs_obj_put_duration"
-
-    _READ_SUCCESS = "frostfs_obj_get_total"
-    _READ_ERRORS = "frostfs_obj_get_fails"
-    _READ_LATENCY = "frostfs_obj_get_duration"
-
-    _DELETE_SUCCESS = "frostfs_obj_delete_total"
-    _DELETE_ERRORS = "frostfs_obj_delete_fails"
-    _DELETE_LATENCY = "frostfs_obj_delete_duration"
+    def __init__(self, summary) -> None:
+        super().__init__()
+        self.write = GrpcWriteOperationMetric(summary)
+        self.read = GrpcReadOperationMetric(summary)
+        self.delete = GrpcDeleteOperationMetric(summary)
 
 
 class S3Metrics(MetricsBase):
-    _WRITE_SUCCESS = "aws_obj_put_total"
-    _WRITE_ERRORS = "aws_obj_put_fails"
-    _WRITE_LATENCY = "aws_obj_put_duration"
+    def __init__(self, summary) -> None:
+        super().__init__()
+        self.write = S3WriteOperationMetric(summary)
+        self.read = S3ReadOperationMetric(summary)
+        self.delete = S3DeleteOperationMetric(summary)
 
-    _READ_SUCCESS = "aws_obj_get_total"
-    _READ_ERRORS = "aws_obj_get_fails"
-    _READ_LATENCY = "aws_obj_get_duration"
-
-    _DELETE_SUCCESS = "aws_obj_delete_total"
-    _DELETE_ERRORS = "aws_obj_delete_fails"
-    _DELETE_LATENCY = "aws_obj_delete_duration"
 
 class S3LocalMetrics(MetricsBase):
-    _WRITE_SUCCESS = "s3local_obj_put_total"
-    _WRITE_ERRORS = "s3local_obj_put_fails"
-    _WRITE_LATENCY = "s3local_obj_put_duration"
+    def __init__(self, summary) -> None:
+        super().__init__()
+        self.write = S3LocalWriteOperationMetric(summary)
+        self.read = S3LocalReadOperationMetric(summary)
 
-    _READ_SUCCESS = "s3local_obj_get_total"
-    _READ_ERRORS = "s3local_obj_get_fails"
-    _READ_LATENCY = "s3local_obj_get_duration"
 
 class LocalMetrics(MetricsBase):
-    _WRITE_SUCCESS = "local_obj_put_total"
-    _WRITE_ERRORS = "local_obj_put_fails"
-    _WRITE_LATENCY = "local_obj_put_duration"
-
-    _READ_SUCCESS = "local_obj_get_total"
-    _READ_ERRORS = "local_obj_get_fails"
-
-    _DELETE_SUCCESS = "local_obj_delete_total"
-    _DELETE_ERRORS = "local_obj_delete_fails"
+    def __init__(self, summary) -> None:
+        super().__init__()
+        self.write = LocalWriteOperationMetric(summary)
+        self.read = LocalReadOperationMetric(summary)
+        self.delete = LocalDeleteOperationMetric(summary)
 
 
 class VerifyMetrics(MetricsBase):
-    _WRITE_SUCCESS = "N/A"
-    _WRITE_ERRORS = "N/A"
-
-    _READ_SUCCESS = "verified_obj"
-    _READ_ERRORS = "invalid_obj"
-
-    _DELETE_SUCCESS = "N/A"
-    _DELETE_ERRORS = "N/A"
+    def __init__(self, summary) -> None:
+        super().__init__()
+        self.read = VerifyReadOperationMetric(summary)
 
 
 def get_metrics_object(load_type: LoadScenario, summary: dict[str, Any]) -> MetricsBase:

src/frostfs_testlib/load/load_report.py

@@ -3,8 +3,8 @@ from typing import Optional
 
 import yaml
 
+from frostfs_testlib.load.interfaces.summarized import SummarizedStats
 from frostfs_testlib.load.load_config import K6ProcessAllocationStrategy, LoadParams, LoadScenario
-from frostfs_testlib.load.load_metrics import get_metrics_object
 from frostfs_testlib.utils.converting_utils import calc_unit
 
 
@@ -114,38 +114,23 @@ class LoadReport:
 
         return model_map[self.load_params.scenario]
 
-    def _get_operations_sub_section_html(
-        self,
-        operation_type: str,
-        total_operations: int,
-        requested_rate_str: str,
-        vus_str: str,
-        total_rate: float,
-        throughput: float,
-        errors: dict[str, int],
-        latency: dict[str, dict],
-    ):
+    def _get_operations_sub_section_html(self, operation_type: str, stats: SummarizedStats):
         throughput_html = ""
-        if throughput > 0:
-            throughput, unit = calc_unit(throughput)
+        if stats.throughput > 0:
+            throughput, unit = calc_unit(stats.throughput)
             throughput_html = self._row("Throughput", f"{throughput:.2f} {unit}/sec")
 
         per_node_errors_html = ""
-        total_errors = 0
-        if errors:
-            total_errors: int = 0
-            for node_key, errors in errors.items():
-                total_errors += errors
+        for node_key, errors in stats.errors.by_node.items():
             if self.load_params.k6_process_allocation_strategy == K6ProcessAllocationStrategy.PER_ENDPOINT:
                 per_node_errors_html += self._row(f"At {node_key}", errors)
 
         latency_html = ""
-        if latency:
-            for node_key, latency_dict in latency.items():
+        for node_key, latencies in stats.latencies.by_node.items():
             latency_values = "N/A"
-                if latency_dict:
+            if latencies:
                 latency_values = ""
-                    for param_name, param_val in latency_dict.items():
+                for param_name, param_val in latencies.items():
                     latency_values += f"{param_name}={param_val:.2f}ms "
 
             latency_html += self._row(f"{operation_type} latency {node_key.split(':')[0]}", latency_values)
@@ -153,24 +138,22 @@ class LoadReport:
         object_size, object_size_unit = calc_unit(self.load_params.object_size, 1)
         duration = self._seconds_to_formatted_duration(self.load_params.load_time)
         model = self._get_model_string()
+        requested_rate_str = f"{stats.requested_rate}op/sec" if stats.requested_rate else ""
         # write 8KB 15h49m 50op/sec 50th open model/closed model/min_iteration duration=1s - 1.636MB/s 199.57451/s
-        short_summary = f"{operation_type} {object_size}{object_size_unit} {duration} {requested_rate_str} {vus_str} {model} - {throughput:.2f}{unit}/s {total_rate:.2f}/s"
-        errors_percent = 0
-        if total_operations:
-            errors_percent = total_errors / total_operations * 100.0
+        short_summary = f"{operation_type} {object_size}{object_size_unit} {duration} {requested_rate_str} {stats.threads}th {model} - {throughput:.2f}{unit}/s {stats.rate:.2f}/s"
 
         html = f"""
         <table border="1" cellpadding="5px"><tbody>
         <tr><th colspan="2" bgcolor="gainsboro">{short_summary}</th></tr>
         <tr><th colspan="2" bgcolor="gainsboro">Metrics</th></tr>
-        {self._row("Total operations", total_operations)}
-        {self._row("OP/sec", f"{total_rate:.2f}")}
+        {self._row("Total operations", stats.operations)}
+        {self._row("OP/sec", f"{stats.rate:.2f}")}
         {throughput_html}
         {latency_html}
         <tr><th colspan="2" bgcolor="gainsboro">Errors</th></tr>
         {per_node_errors_html}
-        {self._row("Total", f"{total_errors} ({errors_percent:.2f}%)")}
-        {self._row("Threshold", f"{self.load_params.error_threshold:.2f}%")}
+        {self._row("Total", f"{stats.errors.total} ({stats.errors.percent:.2f}%)")}
+        {self._row("Threshold", f"{stats.errors.threshold:.2f}%")}
         </tbody></table><br><hr>
         """
 
@@ -178,111 +161,12 @@ class LoadReport:
 
     def _get_totals_section_html(self):
         html = ""
-        for i, load_summaries in enumerate(self.load_summaries_list, 1):
-            html += f"<h3>Load Results for load #{i}</h3>"
+        for i in range(len(self.load_summaries_list)):
+            html += f"<h3>Load Results for load #{i+1}</h3>"
 
-            write_operations = 0
-            write_op_sec = 0
-            write_throughput = 0
-            write_latency = {}
-            write_errors = {}
-            requested_write_rate = self.load_params.write_rate
-            requested_write_rate_str = f"{requested_write_rate}op/sec" if requested_write_rate else ""
-
-            read_operations = 0
-            read_op_sec = 0
-            read_throughput = 0
-            read_latency = {}
-            read_errors = {}
-            requested_read_rate = self.load_params.read_rate
-            requested_read_rate_str = f"{requested_read_rate}op/sec" if requested_read_rate else ""
-
-            delete_operations = 0
-            delete_op_sec = 0
-            delete_latency = {}
-            delete_errors = {}
-            requested_delete_rate = self.load_params.delete_rate
-            requested_delete_rate_str = f"{requested_delete_rate}op/sec" if requested_delete_rate else ""
-
-            if self.load_params.scenario in [LoadScenario.gRPC_CAR, LoadScenario.S3_CAR]:
-                delete_vus = max(self.load_params.preallocated_deleters or 0, self.load_params.max_deleters or 0)
-                write_vus = max(self.load_params.preallocated_writers or 0, self.load_params.max_writers or 0)
-                read_vus = max(self.load_params.preallocated_readers or 0, self.load_params.max_readers or 0)
-            else:
-                write_vus = self.load_params.writers
-                read_vus = self.load_params.readers
-                delete_vus = self.load_params.deleters
-
-            write_vus_str = f"{write_vus}th"
-            read_vus_str = f"{read_vus}th"
-            delete_vus_str = f"{delete_vus}th"
-
-            write_section_required = False
-            read_section_required = False
-            delete_section_required = False
-
-            for node_key, load_summary in load_summaries.items():
-                metrics = get_metrics_object(self.load_params.scenario, load_summary)
-                write_operations += metrics.write_total_iterations
-                if write_operations:
-                    write_section_required = True
-                    write_op_sec += metrics.write_rate
-                    write_latency[node_key] = metrics.write_latency
-                    write_throughput += metrics.write_throughput
-                    if metrics.write_failed_iterations:
-                        write_errors[node_key] = metrics.write_failed_iterations
-
-                read_operations += metrics.read_total_iterations
-                if read_operations:
-                    read_section_required = True
-                    read_op_sec += metrics.read_rate
-                    read_throughput += metrics.read_throughput
-                    read_latency[node_key] = metrics.read_latency
-                    if metrics.read_failed_iterations:
-                        read_errors[node_key] = metrics.read_failed_iterations
-
-                delete_operations += metrics.delete_total_iterations
-                if delete_operations:
-                    delete_section_required = True
-                    delete_op_sec += metrics.delete_rate
-                    delete_latency[node_key] = metrics.delete_latency
-                    if metrics.delete_failed_iterations:
-                        delete_errors[node_key] = metrics.delete_failed_iterations
-
-            if write_section_required:
-                html += self._get_operations_sub_section_html(
-                    "Write",
-                    write_operations,
-                    requested_write_rate_str,
-                    write_vus_str,
-                    write_op_sec,
-                    write_throughput,
-                    write_errors,
-                    write_latency,
-                )
-
-            if read_section_required:
-                html += self._get_operations_sub_section_html(
-                    "Read",
-                    read_operations,
-                    requested_read_rate_str,
-                    read_vus_str,
-                    read_op_sec,
-                    read_throughput,
-                    read_errors,
-                    read_latency,
-                )
-
-            if delete_section_required:
-                html += self._get_operations_sub_section_html(
-                    "Delete",
-                    delete_operations,
-                    requested_delete_rate_str,
-                    delete_vus_str,
-                    delete_op_sec,
-                    0,
-                    delete_errors,
-                    delete_latency,
-                )
+            summarized = SummarizedStats.collect(self.load_params, self.load_summaries_list[i])
+            for operation_type, stats in summarized.items():
+                if stats.operations:
+                    html += self._get_operations_sub_section_html(operation_type, stats)
 
         return html

src/frostfs_testlib/load/load_verifiers.py

@@ -1,4 +1,5 @@
 from frostfs_testlib import reporter
+from frostfs_testlib.load.interfaces.summarized import SummarizedStats
 from frostfs_testlib.load.load_config import LoadParams, LoadScenario
 from frostfs_testlib.load.load_metrics import get_metrics_object
 
@@ -8,56 +9,16 @@ class LoadVerifier:
         self.load_params = load_params
 
     def collect_load_issues(self, load_summaries: dict[str, dict]) -> list[str]:
-        write_operations = 0
-        write_errors = 0
-
-        read_operations = 0
-        read_errors = 0
-
-        delete_operations = 0
-        delete_errors = 0
-
-        writers = self.load_params.writers or self.load_params.preallocated_writers or 0
-        readers = self.load_params.readers or self.load_params.preallocated_readers or 0
-        deleters = self.load_params.deleters or self.load_params.preallocated_deleters or 0
-
-        for load_summary in load_summaries.values():
-            metrics = get_metrics_object(self.load_params.scenario, load_summary)
-
-            if writers:
-                write_operations += metrics.write_total_iterations
-                write_errors += metrics.write_failed_iterations
-
-            if readers:
-                read_operations += metrics.read_total_iterations
-                read_errors += metrics.read_failed_iterations
-
-            if deleters:
-                delete_operations += metrics.delete_total_iterations
-                delete_errors += metrics.delete_failed_iterations
-
+        summarized = SummarizedStats.collect(self.load_params, load_summaries)
         issues = []
-        if writers and not write_operations:
-            issues.append(f"No any write operation was performed")
-        if readers and not read_operations:
-            issues.append(f"No any read operation was performed")
-        if deleters and not delete_operations:
-            issues.append(f"No any delete operation was performed")
 
-        error_rate = self._get_error_rate(writers, write_operations, write_errors)
-        if error_rate > self.load_params.error_threshold:
-            rate_str = self._get_rate_str(error_rate)
-            issues.append(f"Write errors exceeded threshold: {rate_str} > {self.load_params.error_threshold}%")
+        for operation_type, stats in summarized.items():
+            if stats.threads and not stats.operations:
+                issues.append(f"No any {operation_type.lower()} operation was performed")
 
-        error_rate = self._get_error_rate(readers, read_operations, read_errors)
-        if error_rate > self.load_params.error_threshold:
-            rate_str = self._get_rate_str(error_rate)
-            issues.append(f"Read errors exceeded threshold: {rate_str} > {self.load_params.error_threshold}%")
-
-        error_rate = self._get_error_rate(deleters, delete_operations, delete_errors)
-        if error_rate > self.load_params.error_threshold:
-            rate_str = self._get_rate_str(error_rate)
-            issues.append(f"Delete errors exceeded threshold: {rate_str} > {self.load_params.error_threshold}%")
+            if stats.errors.percent > stats.errors.threshold:
+                rate_str = self._get_rate_str(stats.errors.percent)
+                issues.append(f"{operation_type} errors exceeded threshold: {rate_str} > {stats.errors.threshold}%")
 
         return issues
 
@@ -74,13 +35,6 @@ class LoadVerifier:
                 )
         return verify_issues
 
-    def _get_error_rate(self, vus: int, operations: int, errors: int) -> float:
-        if not operations or not vus:
-            return 0
-
-        error_rate = errors / operations * 100
-        return error_rate
-
     def _get_rate_str(self, rate: float, minimal: float = 0.01) -> str:
         return f"{rate:.2f}%" if rate >= minimal else f"~{minimal}%"
 
@@ -95,13 +49,13 @@ class LoadVerifier:
         delete_success = 0
 
         if deleters > 0:
-            delete_success = load_metrics.delete_success_iterations
+            delete_success = load_metrics.delete.success_iterations
 
         if verification_summary:
             verify_metrics = get_metrics_object(LoadScenario.VERIFY, verification_summary)
-            verified_objects = verify_metrics.read_success_iterations
-            invalid_objects = verify_metrics.read_failed_iterations
-            total_left_objects = load_metrics.write_success_iterations - delete_success
+            verified_objects = verify_metrics.read.success_iterations
+            invalid_objects = verify_metrics.read.failed_iterations
+            total_left_objects = load_metrics.write.success_iterations - delete_success
 
             # Due to interruptions we may see total verified objects to be less than written on writers count
             if abs(total_left_objects - verified_objects) > writers: