Official Go implementation of the Ethereum protocol
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go-ethereum/triedb/pathdb/difflayer_test.go

170 lines
4.7 KiB

// Copyright 2019 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 pathdb
import (
"bytes"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/trie/testutil"
"github.com/ethereum/go-ethereum/trie/trienode"
)
func emptyLayer() *diskLayer {
return &diskLayer{
db: New(rawdb.NewMemoryDatabase(), nil),
buffer: newNodeBuffer(DefaultBufferSize, nil, 0),
}
}
// goos: darwin
// goarch: arm64
// pkg: github.com/ethereum/go-ethereum/trie
// BenchmarkSearch128Layers
// BenchmarkSearch128Layers-8 243826 4755 ns/op
func BenchmarkSearch128Layers(b *testing.B) { benchmarkSearch(b, 0, 128) }
// goos: darwin
// goarch: arm64
// pkg: github.com/ethereum/go-ethereum/trie
// BenchmarkSearch512Layers
// BenchmarkSearch512Layers-8 49686 24256 ns/op
func BenchmarkSearch512Layers(b *testing.B) { benchmarkSearch(b, 0, 512) }
// goos: darwin
// goarch: arm64
// pkg: github.com/ethereum/go-ethereum/trie
// BenchmarkSearch1Layer
// BenchmarkSearch1Layer-8 14062725 88.40 ns/op
func BenchmarkSearch1Layer(b *testing.B) { benchmarkSearch(b, 127, 128) }
func benchmarkSearch(b *testing.B, depth int, total int) {
var (
npath []byte
nhash common.Hash
nblob []byte
)
// First, we set up 128 diff layers, with 3K items each
fill := func(parent layer, index int) *diffLayer {
nodes := make(map[common.Hash]map[string]*trienode.Node)
nodes[common.Hash{}] = make(map[string]*trienode.Node)
for i := 0; i < 3000; i++ {
var (
path = testutil.RandBytes(32)
node = testutil.RandomNode()
)
nodes[common.Hash{}][string(path)] = trienode.New(node.Hash, node.Blob)
if npath == nil && depth == index {
npath = common.CopyBytes(path)
nblob = common.CopyBytes(node.Blob)
nhash = node.Hash
}
}
return newDiffLayer(parent, common.Hash{}, 0, 0, nodes, nil)
}
var layer layer
layer = emptyLayer()
for i := 0; i < total; i++ {
layer = fill(layer, i)
}
b.ResetTimer()
var (
have []byte
err error
)
for i := 0; i < b.N; i++ {
have, err = layer.Node(common.Hash{}, npath, nhash)
if err != nil {
b.Fatal(err)
}
}
if !bytes.Equal(have, nblob) {
b.Fatalf("have %x want %x", have, nblob)
}
}
// goos: darwin
// goarch: arm64
// pkg: github.com/ethereum/go-ethereum/trie
// BenchmarkPersist
// BenchmarkPersist-8 10 111252975 ns/op
func BenchmarkPersist(b *testing.B) {
// First, we set up 128 diff layers, with 3K items each
fill := func(parent layer) *diffLayer {
nodes := make(map[common.Hash]map[string]*trienode.Node)
nodes[common.Hash{}] = make(map[string]*trienode.Node)
for i := 0; i < 3000; i++ {
var (
path = testutil.RandBytes(32)
node = testutil.RandomNode()
)
nodes[common.Hash{}][string(path)] = trienode.New(node.Hash, node.Blob)
}
return newDiffLayer(parent, common.Hash{}, 0, 0, nodes, nil)
}
for i := 0; i < b.N; i++ {
b.StopTimer()
var layer layer
layer = emptyLayer()
for i := 1; i < 128; i++ {
layer = fill(layer)
}
b.StartTimer()
dl, ok := layer.(*diffLayer)
if !ok {
break
}
dl.persist(false)
}
}
// BenchmarkJournal benchmarks the performance for journaling the layers.
//
// BenchmarkJournal
// BenchmarkJournal-8 10 110969279 ns/op
func BenchmarkJournal(b *testing.B) {
b.SkipNow()
// First, we set up 128 diff layers, with 3K items each
fill := func(parent layer) *diffLayer {
nodes := make(map[common.Hash]map[string]*trienode.Node)
nodes[common.Hash{}] = make(map[string]*trienode.Node)
for i := 0; i < 3000; i++ {
var (
path = testutil.RandBytes(32)
node = testutil.RandomNode()
)
nodes[common.Hash{}][string(path)] = trienode.New(node.Hash, node.Blob)
}
// TODO(rjl493456442) a non-nil state set is expected.
return newDiffLayer(parent, common.Hash{}, 0, 0, nodes, nil)
}
var layer layer
layer = emptyLayer()
for i := 0; i < 128; i++ {
layer = fill(layer)
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
layer.journal(new(bytes.Buffer))
}
}