Commit graph

6913 commits

Author SHA1 Message Date
Roman Khimov
9efc110058 network: it is 42
32 is a very good number, but we all know 42 is a better one. And it can even
be proven by tests with higher peaking TPS values.

You may wonder why is it so good? Because we're using packet-switching
networks mostly and a packet is a packet almost irrespectively of how bit it
is. Yet a packet has some maximum possible size (hi, MTU) and this size most
of the time is 1500 (or a little less than that, hi VPN). Subtract IP header
(20 for IPv4 or 40 for IPv6 not counting options), TCP header (another 20) and
Neo message/payload headers (~8 for this case) and we have just a little more
than 1400 bytes for our dear hashes. Which means that in a single packet most
of the time we can have 42-44 of them, maybe 45. Choosing between these
numbers is not hard then.
2022-10-24 14:44:19 +03:00
Roman Khimov
9d6b18adec network: drop minPoolCount magic constant
We have AttemptConnPeers that is closely related, the more we have there the
bigger the network supposedly is, so it's much better than magic minPoolCount.
2022-10-24 14:36:10 +03:00
Roman Khimov
af24051bf5 network: sleep a bit before retrying reconnects
If Dial() is to exit quickly we can end up in a retry loop eating CPU.
2022-10-24 14:34:48 +03:00
Roman Khimov
a17d9f80a4
Merge pull request #2759 from nspcc-dev/avoid-db-lookup-in-hasblock
core: optimize HasBlock check for recent blocks
2022-10-24 14:33:38 +07:00
Roman Khimov
f42b8e78fc
Merge pull request #2758 from nspcc-dev/check-inflight-tx-invs
network: check inv against currently processed transactions
2022-10-24 14:16:33 +07:00
Roman Khimov
52df03ecbc
Merge pull request #2757 from nspcc-dev/batched-getdata
network: batch getdata replies
2022-10-24 14:15:55 +07:00
Roman Khimov
0551ddff4e
Merge pull request #2749 from nspcc-dev/rpc-waiter
rpc: implement transaction awaiting
2022-10-24 13:08:06 +07:00
Anna Shaleva
3cccc89dac rpc: add Wait wrapper to Notary actor 2022-10-24 06:09:36 +03:00
Anna Shaleva
1a6f1c805c rpc: fix race in TestWSClientEvents
```
2022-10-21T08:59:45.2219797Z === RUN   TestWSClientEvents/default_ntf_channel
2022-10-21T08:59:45.2219901Z ==================
2022-10-21T08:59:45.2220017Z WARNING: DATA RACE
2022-10-21T08:59:45.2220177Z Write at 0x00c000c82778 by goroutine 371:
2022-10-21T08:59:45.2220580Z   github.com/nspcc-dev/neo-go/pkg/rpcclient.TestWSClientEvents.func2()
2022-10-21T08:59:45.2221112Z       /home/runner/work/neo-go/neo-go/pkg/rpcclient/wsclient_test.go:171 +0x1c4
2022-10-21T08:59:45.2221244Z   testing.tRunner()
2022-10-21T08:59:45.2221617Z       /opt/hostedtoolcache/go/1.18.7/x64/src/testing/testing.go:1439 +0x213
2022-10-21T08:59:45.2221759Z   testing.(*T).Run.func1()
2022-10-21T08:59:45.2222124Z       /opt/hostedtoolcache/go/1.18.7/x64/src/testing/testing.go:1486 +0x47
2022-10-21T08:59:45.2222138Z
2022-10-21T08:59:45.2222308Z Previous read at 0x00c000c82778 by goroutine 37:
2022-10-21T08:59:45.2222694Z   github.com/nspcc-dev/neo-go/pkg/rpcclient.(*Client).StateRootInHeader()
2022-10-21T08:59:45.2223151Z       /home/runner/work/neo-go/neo-go/pkg/rpcclient/rpc.go:1104 +0xb0
2022-10-21T08:59:45.2223482Z   github.com/nspcc-dev/neo-go/pkg/rpcclient.(*WSClient).wsReader()
2022-10-21T08:59:45.2224077Z       /home/runner/work/neo-go/neo-go/pkg/rpcclient/wsclient.go:210 +0x651
2022-10-21T08:59:45.2224416Z   github.com/nspcc-dev/neo-go/pkg/rpcclient.NewWS.func2()
2022-10-21T08:59:45.2224892Z       /home/runner/work/neo-go/neo-go/pkg/rpcclient/wsclient.go:149 +0x39
2022-10-21T08:59:45.2224901Z
2022-10-21T08:59:45.2225049Z Goroutine 371 (running) created at:
2022-10-21T08:59:45.2225182Z   testing.(*T).Run()
2022-10-21T08:59:45.2225548Z       /opt/hostedtoolcache/go/1.18.7/x64/src/testing/testing.go:1486 +0x724
2022-10-21T08:59:45.2225911Z   github.com/nspcc-dev/neo-go/pkg/rpcclient.TestWSClientEvents()
2022-10-21T08:59:45.2226408Z       /home/runner/work/neo-go/neo-go/pkg/rpcclient/wsclient_test.go:167 +0x404
2022-10-21T08:59:45.2226539Z   testing.tRunner()
2022-10-21T08:59:45.2226900Z       /opt/hostedtoolcache/go/1.18.7/x64/src/testing/testing.go:1439 +0x213
2022-10-21T08:59:45.2227042Z   testing.(*T).Run.func1()
2022-10-21T08:59:45.2227398Z       /opt/hostedtoolcache/go/1.18.7/x64/src/testing/testing.go:1486 +0x47
2022-10-21T08:59:45.2227406Z
2022-10-21T08:59:45.2227552Z Goroutine 37 (finished) created at:
2022-10-21T08:59:45.2227851Z   github.com/nspcc-dev/neo-go/pkg/rpcclient.NewWS()
2022-10-21T08:59:45.2228327Z       /home/runner/work/neo-go/neo-go/pkg/rpcclient/wsclient.go:149 +0x6fb
2022-10-21T08:59:45.2228843Z   github.com/nspcc-dev/neo-go/pkg/rpcclient.TestWSClientEvents.func2()
2022-10-21T08:59:45.2229434Z       /home/runner/work/neo-go/neo-go/pkg/rpcclient/wsclient_test.go:168 +0x131
2022-10-21T08:59:45.2229569Z   testing.tRunner()
2022-10-21T08:59:45.2229930Z       /opt/hostedtoolcache/go/1.18.7/x64/src/testing/testing.go:1439 +0x213
2022-10-21T08:59:45.2230069Z   testing.(*T).Run.func1()
2022-10-21T08:59:45.2230424Z       /opt/hostedtoolcache/go/1.18.7/x64/src/testing/testing.go:1486 +0x47
2022-10-21T08:59:45.2230526Z ==================
2022-10-21T08:59:45.2230703Z     wsclient_test.go:186:
2022-10-21T08:59:45.2230988Z         	Error Trace:	wsclient_test.go:186
2022-10-21T08:59:45.2231209Z         	Error:      	Should be true
2022-10-21T08:59:45.2231536Z         	Test:       	TestWSClientEvents/default_ntf_channel
2022-10-21T08:59:45.2231812Z     testing.go:1312: race detected during execution of test
```
2022-10-24 06:09:36 +03:00
Anna Shaleva
d2a9e9120d rpc: extend Waiter interface to wait for several txs with context 2022-10-24 06:09:36 +03:00
Anna Shaleva
6b216050f3 rpc: add compat tests for RPC* interfaces and Client implementations 2022-10-24 06:09:36 +03:00
Anna Shaleva
00d44235c1 rpc: add tests for RPC waiters 2022-10-24 06:09:36 +03:00
Anna Shaleva
388112dcaa rpc: mark old WSClient's SubscribeFor* methods as deprecated 2022-10-24 06:09:36 +03:00
Anna Shaleva
5b81cb065f rpc: refactor waiter-related actor code 2022-10-24 06:09:36 +03:00
Anna Shaleva
8e84bb51d5 rpc: add "till" filter to WS block events 2022-10-24 06:09:36 +03:00
Anna Shaleva
345d48d051 rpc: improve WS-based transaction awaiting
Subscribe only for required aers.
2022-10-24 06:09:36 +03:00
Anna Shaleva
d7c1f3eac7 rpc: add "container" filter to WS execution notifications 2022-10-24 06:09:36 +03:00
Anna Shaleva
71069b0ed0 rpc: improve WS-enabled transaction awaiting
Fetch blocks since VUB+1, if block received and we haven't returned the
result yet, then transaction wasn't accepted at all.
2022-10-24 06:09:36 +03:00
Anna Shaleva
673a495527 rpc: add "since" filter to WS block events 2022-10-24 06:09:36 +03:00
Anna Shaleva
10a0716217 rpc: implement transaction awaiting functionality
Close #2704.
2022-10-24 06:09:36 +03:00
Anna Shaleva
6d38e75149 rpc: support multiple WSClient notification receivers 2022-10-24 06:09:36 +03:00
Anna Shaleva
4ce6bc6a66 rpc: adjust comment to Notification value cast
And explicitly specify field names on Notification creation.
2022-10-24 06:09:36 +03:00
Roman Khimov
0c3b03617e core: optimize HasBlock check for recent blocks
When block is being spread through the network we can get a lot of invs with
the same hash. Some more stale nodes may also announce previous or some
earlier block. We can avoid full DB lookup for them and minimize inv handling
time (timeouts in inv handler had happened in #2744).

It doesn't affect tests, just makes node a little less likely to spend some
considerable amount of time in the inv handler.
2022-10-21 21:21:58 +03:00
Roman Khimov
e26055190e network: check inv against currently processed transactions
Sometimes we already have it, but it's not yet processed, so we can save on
getdata request. It only affects very high-speed networks like 4-1 scenario
and it doesn't affect it a lot, but still we can do it.
2022-10-21 21:16:18 +03:00
Roman Khimov
cfb5058018 network: batch getdata replies
This is not exactly the protocol-level batching as was tried in #1770 and
proposed by neo-project/neo#2365, but it's a TCP-level change in that we now
Write() a set of messages and given that Go sets up TCP sockets with
TCP_NODELAY by default this is a substantial change, we have less packets
generated with the same amount of data. It doesn't change anything on properly
connected networks, but the ones with delays benefit from it a lot.

This also improves queueing because we no longer generate 32 messages to
deliver on transaction's GetData, it's just one stream of bytes with 32
messages inside.

Do the same with GetBlocksByIndex, we can have a lot of messages there too.

But don't forget about potential peer DoS attacks, if a peer is to request a
lot of big blocks we need to flush them before we process the whole set.
2022-10-21 17:16:32 +03:00
Roman Khimov
bf4636f70a
Merge pull request #2755 from nspcc-dev/improve-networking
Improve P2P transaction handling
2022-10-21 16:22:02 +07:00
Roman Khimov
e1b5ac9b81 network: separate tx handling from msg handling
This allows to naturally scale transaction processing if we have some peer
that is sending a lot of them while others are mostly silent. It also can help
somewhat in the event we have 50 peers that all send transactions. 4+1
scenario benefits a lot from it, while 7+2 slows down a little. Delayed
scenarios don't care.

Surprisingly, this also makes disconnects (#2744) much more rare, 4-node
scenario almost never sees it now. Most probably this is the case where peers
affect each other a lot, single-threaded transaction receiver can be slow
enough to trigger some timeout in getdata handler of its peer (because it
tries to push a number of replies).
2022-10-21 12:11:24 +03:00
Roman Khimov
09015e06d5
Merge pull request #2754 from nspcc-dev/move-neofs-mainnet-fork-date
config: reschedule Aspidochelone fork block for NeoFS mainnet
2022-10-21 16:02:23 +07:00
Roman Khimov
e003b67418 network: reuse inventory hash list for request hashes
Microoptimization, we can do this because we only use them in handleInvCmd().
2022-10-21 11:28:40 +03:00
Roman Khimov
831067c29e config: reschedule Aspidochelone fork block for NeoFS mainnet
We can't make it before 2550000, so move to 2600000. @anatoly-bogatyrev,
please ensure you're using this new height for mainnet NeoFS configurations
next week.
2022-10-21 10:52:11 +03:00
Roman Khimov
295add052b
Merge pull request #2752 from nspcc-dev/initialize-dbft-with-previous-timestamp
dbft: rev up, fix context timestamp initialization
2022-10-20 16:53:08 +07:00
Roman Khimov
493b979b95 dbft: rev up, fix context timestamp initialization
See nspcc-dev/dbft#64, fixes #2753.
2022-10-20 12:38:14 +03:00
Roman Khimov
0f625f04f0
Merge pull request #2748 from nspcc-dev/stop-tx-flow
network/consensus: use new dbft StopTxFlow callback
2022-10-18 16:29:37 +07:00
Roman Khimov
73ce898e27 network/consensus: use new dbft StopTxFlow callback
It makes sense in general (further narrowing down the time window when
transactions are processed by consensus thread) and it improves block times a
little too, especially in the 7+2 scenario.

Related to #2744.
2022-10-18 11:06:20 +03:00
Roman Khimov
903beeb5df
Merge pull request #2750 from nspcc-dev/network-prometheus-metrics
network: add prometheus histogram with cmd processing time
2022-10-18 13:07:50 +07:00
Roman Khimov
2791127ee4 network: add prometheus histogram with cmd processing time
It can be useful to detect some performance issues.
2022-10-17 22:51:16 +03:00
Roman Khimov
73079745ab
Merge pull request #2746 from nspcc-dev/optimize-tx-callbacks
network: only call tx callback if we're waiting for transactions
2022-10-17 16:39:41 +07:00
Roman Khimov
45f4e8c649
Merge pull request #2747 from aprasolova/codeowners
Add CODEOWNERS file
2022-10-17 13:37:25 +07:00
anastasia prasolova
f843b983ef Add CODEOWNERS file
Signed-off-by: anastasia prasolova <anastasia@nspcc.ru>
2022-10-16 21:14:58 +03:00
Roman Khimov
dce9f80585
Merge pull request #2743 from nspcc-dev/log-fan-out
Logarithmic gossip fan out
2022-10-14 23:18:34 +07:00
Roman Khimov
4dd3fd4ac0 network: only call tx callback if we're waiting for transactions
Until the consensus process starts for a new block and until it really needs
some transactions we can spare some cycles by not delivering transactions to
it. In tests this doesn't affect TPS, but makes block delays a bit more
stable. Related to #2744, I think it also may cause timeouts during
transaction processing (waiting on the consensus process channel while it does
something dBFT-related).
2022-10-14 18:45:48 +03:00
Roman Khimov
65f0fadddb network: register peer only if it's not a duplicate 2022-10-14 15:53:32 +03:00
Roman Khimov
851cbc7dab network: implement adaptive peer requests
When the network is big enough, MinPeers may be suboptimal for good network
connectivity, but if we know the network size we can do some estimation on the
number of sufficient peers.
2022-10-14 15:53:32 +03:00
Roman Khimov
c17b2afab5 network: add BroadcastFactor to control gossip, fix #2678 2022-10-14 15:53:32 +03:00
Roman Khimov
3ed140abbf config: raise mainnet/testnet MinPeers to 10
That's the configuration C# node has by default and 5 is really a very small
number of peers.
2022-10-14 15:53:32 +03:00
Roman Khimov
215e8704f1 network: simplify discoverer, make it almost a lib
We already have two basic lists: connected and unconnected nodes, we don't
need an additional channel and we don't need a goroutine to handle it.
2022-10-14 15:53:32 +03:00
Roman Khimov
c1ef326183 network: re-add addresses to the pool on UnregisterConnectedAddr
That's what we do anyway, but this way we can be a bit more efficient.
2022-10-14 14:12:33 +03:00
Roman Khimov
631f166709 network: broadcast to log-dependent number of nodes
Fixes #608.
2022-10-14 14:12:33 +03:00
Roman Khimov
c3001bc5bd
Merge pull request #2740 from nspcc-dev/cli-improvement
cli: improve VM CLI a bit more
2022-10-13 20:21:47 +07:00
Anna Shaleva
8b91428db8 cli: unify documentation of VM CLI commands
1. UsageText shows the command usage rule. Fixed/added where needed.
2. Description shows the command description, huh. It is shown right after
   UsageText, so there's no need to repeat the command usage rule. If
   Description contains Example, then it should be printed on a new line.
2022-10-13 16:07:34 +03:00