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main.go
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main.go
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/*
Benchmark github.com/ipfs/go-ipfs/blockservice/worker.
Loop over a range of workers and buffer sizes and measure the time it
per block-transfer operation for each value. Run with:
$ go run "${GOPATH}/src/github.com/ipfs/go-ipfs/blockservice/worker/bench/main.go"
*/
package main
import (
"log"
"math"
"testing"
"time"
ds "github.com/ipfs/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-datastore"
ds_sync "github.com/ipfs/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-datastore/sync"
blocks "github.com/ipfs/go-ipfs/blocks"
blockstore "github.com/ipfs/go-ipfs/blocks/blockstore"
worker "github.com/ipfs/go-ipfs/blockservice/worker"
"github.com/ipfs/go-ipfs/exchange/offline"
"github.com/ipfs/go-ipfs/thirdparty/delay"
"github.com/ipfs/go-ipfs/util/datastore2"
)
const kEstRoutingDelay = time.Second
const kBlocksPerOp = 100
func main() {
var bestConfig worker.Config
var quickestNsPerOp int64 = math.MaxInt64
for NumWorkers := 1; NumWorkers < 10; NumWorkers++ {
for ClientBufferSize := 0; ClientBufferSize < 10; ClientBufferSize++ {
for WorkerBufferSize := 0; WorkerBufferSize < 10; WorkerBufferSize++ {
c := worker.Config{
NumWorkers: NumWorkers,
ClientBufferSize: ClientBufferSize,
WorkerBufferSize: WorkerBufferSize,
}
result := testing.Benchmark(BenchmarkWithConfig(c))
if result.NsPerOp() < quickestNsPerOp {
bestConfig = c
quickestNsPerOp = result.NsPerOp()
}
log.Printf("benched %+v \t result: %+v", c, result)
}
}
}
log.Println(bestConfig)
}
func BenchmarkWithConfig(c worker.Config) func(b *testing.B) {
return func(b *testing.B) {
routingDelay := delay.Fixed(0) // during setup
dstore := ds_sync.MutexWrap(datastore2.WithDelay(ds.NewMapDatastore(), routingDelay))
bstore := blockstore.NewBlockstore(dstore)
var testdata []*blocks.Block
var i int64
for i = 0; i < kBlocksPerOp; i++ {
testdata = append(testdata, blocks.NewBlock([]byte(string(i))))
}
b.ResetTimer()
b.SetBytes(kBlocksPerOp)
for i := 0; i < b.N; i++ {
b.StopTimer()
w := worker.NewWorker(offline.Exchange(bstore), c)
b.StartTimer()
prev := routingDelay.Set(kEstRoutingDelay) // during measured section
for _, block := range testdata {
if err := w.HasBlock(block); err != nil {
b.Fatal(err)
}
}
routingDelay.Set(prev) // to hasten the unmeasured close period
b.StopTimer()
w.Close()
b.StartTimer()
}
}
}