mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
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103 lines
3.9 KiB
Markdown
103 lines
3.9 KiB
Markdown
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### Create files with sample requests
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`go run ./cmd/rpctest --action=bench1` will print tmpDir.
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And create in tmpDir `results_*.csv` and `vegeta_*.txt` files.
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Command takes long time. Kill it when `vegeta_turbo_geth_debug_storageRangeAt.txt` is few MB.
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File `vegeta_turbo_geth_*.txt` will produce load to `turbo_geth` node, `vegeta_geth_*.txt` to `geth`.
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Change host/port in `cmd/rpctest/main.go:routes` variable.
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By default `go run ./cmd/rpctest --action=bench1` calling only Geth node
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because `cmd/rpctest/main.go:main` calling it with first parameter `needCompare=false`.
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Set `needCompare=true` to call Geth and TurboGeth nodes and compare results.
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### Install Vegeta
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```
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go get -u github.com/tsenart/vegeta
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```
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### Run vegeta
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```
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tmpDir = "/var/folders/x_/1mnbt25s3291zr5_fxhjfnq9n86kng/T/"
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cat $(tmpDir)/turbo_geth_stress_test/vegeta_geth_debug_storageRangeAt.csv | vegeta attack -rate=600 -format=json -duration=20s | vegeta plot > plot.html
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open plot.html
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```
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### Mac environment changes
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[Change Open Files Limit](https://gist.github.com/tombigel/d503800a282fcadbee14b537735d202c)
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### Results from my Macbook:
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start rpcdaemon with turbo_geth:
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```
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GODEBUG=remotedb.debug=1 go run ./cmd/geth --remote-db-listen-addr localhost:9997 --rpcport 8545 --rpc --rpcapi eth,debug --nodiscover
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GODEBUG=remotedb.debug=1 go run ./cmd/rpcdaemon --rpcapi eth,debug --rpcport 9545 --remote-db-addr 127.0.0.1:9997
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```
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On simple requests `eth_getBlockByNumber` RPC Daemon looks well:
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```
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cat /tmp/turbo_geth_stress_test/vegeta_turbo_geth_eth_getBlockByNumber.txt | vegeta attack -rate=1000 -format=json -duration=20s | vegeta report
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300rps:
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- Geth Alone: 80% of CPU, 95-Latency 2ms
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- Geth Behind RPC Daemon: 25% of CPU
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- RPC Daemon: 45% of CPU, 95-Latency 3ms
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1000rps:
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- Geth Alone: 200% of CPU, 95-Latency 3ms
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- Geth Behind RPC Daemon: 50% of CPU
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- RPC Daemon: 120% of CPU, 95-Latency 6ms
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2000rps:
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- Geth Alone: 400% of CPU, 95-Latency 15ms
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- Geth Behind RPC Daemon: 100% of CPU
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- RPC Daemon: 250% of CPU, 95-Latency 10ms
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```
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On complex request - `debug_storageRangeAt` producing >600 db.View calls with twice more .Bucket/.Cursor/.Seek calls:
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```
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echo "POST http://localhost:9545 \n Content-Type: application/json \n @$(pwd)/cmd/rpctest/heavyStorageRangeAt.json" | vegeta attack -rate=20 -duration=20s | vegeta report
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10rps, batchSize 10K:
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- Geth Alone: 100% of CPU, 95-Latency 15ms
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- Geth Behind RPC Daemon: 200% of CPU
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- RPC Daemon: 230% of CPU, 95-Latency 7s
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10rps, batchSize 10:
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- Geth Alone: 100% of CPU, 95-Latency 15ms
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- Geth Behind RPC Daemon: 110% of CPU
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- RPC Daemon: 100% of CPU, 95-Latency 230ms
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```
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Reason is: often usage of `.GetAsOf()` - this method does much `.Next()` and `.Seek()` calls.
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Each `.Seek()` call invalidate internal batch cache of `.Next()` method and remote_db does read `CursorBatchSize` amount of keys again.
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```
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PoolSize=128, CursorBatchSize=10K -> 95-Latency 30s (eat all conns in pool)
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PoolSize=128, CursorBatchSize=1K -> 95-Latency 6s (eat 50 conns in pool)
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PoolSize=128, CursorBatchSize=100 -> 95-Latency 600ms (eat 5 conns in pool)
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```
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Idea to discuss: implement `CmdGetAsOf`
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BenchmarkSerialize:
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```
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BenchmarkSerialize/encodeKeyValue()-12 4249026 268 ns/op 12 B/op 0 allocs/op
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BenchmarkSerialize/encoder.Encode(&k)-12 4702418 258 ns/op 14 B/op 0 allocs/op
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BenchmarkSerialize/encoder.Encode(k)-12 3382797 350 ns/op 104 B/op 2 allocs/op
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BenchmarkSerialize/encoder.MustEncode(&k)-12 8431810 140 ns/op 0 B/op 0 allocs/op
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BenchmarkSerialize/encoder.MustEncode(k)-12 5446293 262 ns/op 114 B/op 2 allocs/op
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BenchmarkSerialize/Encode(struct)-12 4160940 266 ns/op 0 B/op 0 allocs/op
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BenchmarkSerialize/10K_Encode(&k,_&v)-12 1368 1089648 ns/op 402976 B/op 0 allocs/op
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BenchmarkSerialize/Encode([10K]k,_[10K]v)-12 1825 548953 ns/op 491584 B/op 4 allocs/op
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```
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