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// Copyright 2018 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package localstore
import (
"strconv"
"testing"
"github.com/ethereum/go-ethereum/swarm/storage"
)
// BenchmarkRetrievalIndexes uploads a number of chunks in order to measure
// total time of updating their retrieval indexes by setting them
// to synced state and requesting them.
//
// This benchmark takes significant amount of time.
//
// Measurements on MacBook Pro (Retina, 15-inch, Mid 2014) show
// that two separated indexes perform better.
//
// # go test -benchmem -run=none github.com/ethereum/go-ethereum/swarm/storage/localstore -bench BenchmarkRetrievalIndexes -v
// goos: darwin
// goarch: amd64
// pkg: github.com/ethereum/go-ethereum/swarm/storage/localstore
// BenchmarkRetrievalIndexes/1000-8 20 75556686 ns/op 19033493 B/op 84500 allocs/op
// BenchmarkRetrievalIndexes/10000-8 1 1079084922 ns/op 382792064 B/op 1429644 allocs/op
// BenchmarkRetrievalIndexes/100000-8 1 16891305737 ns/op 2629165304 B/op 12465019 allocs/op
// PASS
func BenchmarkRetrievalIndexes(b *testing.B) {
for _, count := range []int{
1000,
10000,
100000,
} {
b.Run(strconv.Itoa(count)+"-split", func(b *testing.B) {
for n := 0; n < b.N; n++ {
benchmarkRetrievalIndexes(b, nil, count)
}
})
}
}
// benchmarkRetrievalIndexes is used in BenchmarkRetrievalIndexes
// to do benchmarks with a specific number of chunks and different
// database options.
func benchmarkRetrievalIndexes(b *testing.B, o *Options, count int) {
b.StopTimer()
db, cleanupFunc := newTestDB(b, o)
defer cleanupFunc()
uploader := db.NewPutter(ModePutUpload)
syncer := db.NewSetter(ModeSetSync)
requester := db.NewGetter(ModeGetRequest)
addrs := make([]storage.Address, count)
for i := 0; i < count; i++ {
chunk := generateFakeRandomChunk()
err := uploader.Put(chunk)
if err != nil {
b.Fatal(err)
}
addrs[i] = chunk.Address()
}
// set update gc test hook to signal when
// update gc goroutine is done by sending to
// testHookUpdateGCChan channel, which is
// used to wait for gc index updates to be
// included in the benchmark time
testHookUpdateGCChan := make(chan struct{})
defer setTestHookUpdateGC(func() {
testHookUpdateGCChan <- struct{}{}
})()
b.StartTimer()
for i := 0; i < count; i++ {
err := syncer.Set(addrs[i])
if err != nil {
b.Fatal(err)
}
_, err = requester.Get(addrs[i])
if err != nil {
b.Fatal(err)
}
// wait for update gc goroutine to be done
<-testHookUpdateGCChan
}
}
// BenchmarkUpload compares uploading speed for different
// retrieval indexes and various number of chunks.
//
// Measurements on MacBook Pro (Retina, 15-inch, Mid 2014).
//
// go test -benchmem -run=none github.com/ethereum/go-ethereum/swarm/storage/localstore -bench BenchmarkUpload -v
// goos: darwin
// goarch: amd64
// pkg: github.com/ethereum/go-ethereum/swarm/storage/localstore
// BenchmarkUpload/1000-8 20 59437463 ns/op 25205193 B/op 23208 allocs/op
// BenchmarkUpload/10000-8 2 580646362 ns/op 216532932 B/op 248090 allocs/op
// BenchmarkUpload/100000-8 1 22373390892 ns/op 2323055312 B/op 3995903 allocs/op
// PASS
func BenchmarkUpload(b *testing.B) {
for _, count := range []int{
1000,
10000,
100000,
} {
b.Run(strconv.Itoa(count), func(b *testing.B) {
for n := 0; n < b.N; n++ {
benchmarkUpload(b, nil, count)
}
})
}
}
// benchmarkUpload is used in BenchmarkUpload
// to do benchmarks with a specific number of chunks and different
// database options.
func benchmarkUpload(b *testing.B, o *Options, count int) {
b.StopTimer()
db, cleanupFunc := newTestDB(b, o)
defer cleanupFunc()
uploader := db.NewPutter(ModePutUpload)
chunks := make([]storage.Chunk, count)
for i := 0; i < count; i++ {
chunk := generateFakeRandomChunk()
chunks[i] = chunk
}
b.StartTimer()
for i := 0; i < count; i++ {
err := uploader.Put(chunks[i])
if err != nil {
b.Fatal(err)
}
}
}
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