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// Copyright 2017 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 filters
import (
"bytes"
"context"
"fmt"
"testing"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/bitutil"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/bloombits"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/node"
"github.com/golang/snappy"
)
func BenchmarkBloomBits512(b *testing.B) {
benchmarkBloomBitsForSize(b, 512)
}
func BenchmarkBloomBits1k(b *testing.B) {
benchmarkBloomBitsForSize(b, 1024)
}
func BenchmarkBloomBits2k(b *testing.B) {
benchmarkBloomBitsForSize(b, 2048)
}
func BenchmarkBloomBits4k(b *testing.B) {
benchmarkBloomBitsForSize(b, 4096)
}
func BenchmarkBloomBits8k(b *testing.B) {
benchmarkBloomBitsForSize(b, 8192)
}
func BenchmarkBloomBits16k(b *testing.B) {
benchmarkBloomBitsForSize(b, 16384)
}
func BenchmarkBloomBits32k(b *testing.B) {
benchmarkBloomBitsForSize(b, 32768)
}
func benchmarkBloomBitsForSize(b *testing.B, sectionSize uint64) {
benchmarkBloomBits(b, sectionSize, 0)
benchmarkBloomBits(b, sectionSize, 1)
benchmarkBloomBits(b, sectionSize, 2)
}
const benchFilterCnt = 2000
func benchmarkBloomBits(b *testing.B, sectionSize uint64, comp int) {
benchDataDir := node.DefaultDataDir() + "/geth/chaindata"
fmt.Println("Running bloombits benchmark section size:", sectionSize, " compression method:", comp)
var (
compressFn func([]byte) []byte
decompressFn func([]byte, int) ([]byte, error)
)
switch comp {
case 0:
// no compression
compressFn = func(data []byte) []byte {
return data
}
decompressFn = func(data []byte, target int) ([]byte, error) {
if len(data) != target {
panic(nil)
}
return data, nil
}
case 1:
// bitutil/compress.go
compressFn = bitutil.CompressBytes
decompressFn = bitutil.DecompressBytes
case 2:
// go snappy
compressFn = func(data []byte) []byte {
return snappy.Encode(nil, data)
}
decompressFn = func(data []byte, target int) ([]byte, error) {
decomp, err := snappy.Decode(nil, data)
if err != nil || len(decomp) != target {
panic(err)
}
return decomp, nil
}
}
db, err := ethdb.NewLDBDatabase(benchDataDir, 128, 1024)
if err != nil {
b.Fatalf("error opening database at %v: %v", benchDataDir, err)
}
head := core.GetHeadBlockHash(db)
if head == (common.Hash{}) {
b.Fatalf("chain data not found at %v", benchDataDir)
}
clearBloomBits(db)
fmt.Println("Generating bloombits data...")
headNum := core.GetBlockNumber(db, head)
if headNum < sectionSize+512 {
b.Fatalf("not enough blocks for running a benchmark")
}
start := time.Now()
cnt := (headNum - 512) / sectionSize
var dataSize, compSize uint64
for sectionIdx := uint64(0); sectionIdx < cnt; sectionIdx++ {
bc := bloombits.NewBloomBitsCreator(sectionSize)
var header *types.Header
for i := sectionIdx * sectionSize; i < (sectionIdx+1)*sectionSize; i++ {
hash := core.GetCanonicalHash(db, i)
header = core.GetHeader(db, hash, i)
if header == nil {
b.Fatalf("Error creating bloomBits data")
}
bc.AddHeaderBloom(header.Bloom)
}
sectionHead := core.GetCanonicalHash(db, (sectionIdx+1)*sectionSize-1)
for i := 0; i < bloombits.BloomLength; i++ {
data := bc.GetBitVector(uint(i))
comp := compressFn(data)
dataSize += uint64(len(data))
compSize += uint64(len(comp))
core.StoreBloomBits(db, uint64(i), sectionIdx, sectionHead, comp)
}
//if sectionIdx%50 == 0 {
// fmt.Println(" section", sectionIdx, "/", cnt)
//}
}
d := time.Since(start)
fmt.Println("Finished generating bloombits data")
fmt.Println(" ", d, "total ", d/time.Duration(cnt*sectionSize), "per block")
fmt.Println(" data size:", dataSize, " compressed size:", compSize, " compression ratio:", float64(compSize)/float64(dataSize))
fmt.Println("Running filter benchmarks...")
start = time.Now()
mux := new(event.TypeMux)
var backend *testBackend
for i := 0; i < benchFilterCnt; i++ {
if i%20 == 0 {
db.Close()
db, _ = ethdb.NewLDBDatabase(benchDataDir, 128, 1024)
backend = &testBackend{mux, db, cnt, new(event.Feed), new(event.Feed), new(event.Feed), new(event.Feed)}
}
var addr common.Address
addr[0] = byte(i)
addr[1] = byte(i / 256)
filter := New(backend, 0, int64(cnt*sectionSize-1), []common.Address{addr}, nil)
filter.decompress = decompressFn
if _, err := filter.Find(context.Background()); err != nil {
b.Error("filter.Find error:", err)
}
}
d = time.Since(start)
fmt.Println("Finished running filter benchmarks")
fmt.Println(" ", d, "total ", d/time.Duration(benchFilterCnt), "per address", d*time.Duration(1000000)/time.Duration(benchFilterCnt*cnt*sectionSize), "per million blocks")
db.Close()
}
func forEachKey(db ethdb.Database, startPrefix, endPrefix []byte, fn func(key []byte)) {
it := db.(*ethdb.LDBDatabase).NewIterator()
it.Seek(startPrefix)
for it.Valid() {
key := it.Key()
cmpLen := len(key)
if len(endPrefix) < cmpLen {
cmpLen = len(endPrefix)
}
if bytes.Compare(key[:cmpLen], endPrefix) == 1 {
break
}
fn(common.CopyBytes(key))
it.Next()
}
it.Release()
}
var bloomBitsPrefix = []byte("bloomBits-")
func clearBloomBits(db ethdb.Database) {
fmt.Println("Clearing bloombits data...")
forEachKey(db, bloomBitsPrefix, bloomBitsPrefix, func(key []byte) {
db.Delete(key)
})
}
func BenchmarkNoBloomBits(b *testing.B) {
benchDataDir := node.DefaultDataDir() + "/geth/chaindata"
fmt.Println("Running benchmark without bloombits")
db, err := ethdb.NewLDBDatabase(benchDataDir, 128, 1024)
if err != nil {
b.Fatalf("error opening database at %v: %v", benchDataDir, err)
}
head := core.GetHeadBlockHash(db)
if head == (common.Hash{}) {
b.Fatalf("chain data not found at %v", benchDataDir)
}
headNum := core.GetBlockNumber(db, head)
clearBloomBits(db)
fmt.Println("Running filter benchmarks...")
start := time.Now()
mux := new(event.TypeMux)
backend := &testBackend{mux, db, 0, new(event.Feed), new(event.Feed), new(event.Feed), new(event.Feed)}
filter := New(backend, 0, int64(headNum), []common.Address{common.Address{}}, nil)
filter.Find(context.Background())
d := time.Since(start)
fmt.Println("Finished running filter benchmarks")
fmt.Println(" ", d, "total ", d*time.Duration(1000000)/time.Duration(headNum+1), "per million blocks")
db.Close()
}
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