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61 lines
1.7 KiB
61 lines
1.7 KiB
// Copyright 2023 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>
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package trienode
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import (
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"crypto/rand"
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"testing"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/crypto"
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)
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func BenchmarkMerge(b *testing.B) {
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b.Run("1K", func(b *testing.B) {
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benchmarkMerge(b, 1000)
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})
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b.Run("10K", func(b *testing.B) {
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benchmarkMerge(b, 10_000)
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})
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}
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func benchmarkMerge(b *testing.B, count int) {
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x := NewNodeSet(common.Hash{})
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y := NewNodeSet(common.Hash{})
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addNode := func(s *NodeSet) {
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path := make([]byte, 4)
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rand.Read(path)
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blob := make([]byte, 32)
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rand.Read(blob)
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hash := crypto.Keccak256Hash(blob)
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s.AddNode(path, New(hash, blob))
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}
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for i := 0; i < count; i++ {
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// Random path of 4 nibbles
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addNode(x)
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addNode(y)
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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// Store set x into a backup
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z := NewNodeSet(common.Hash{})
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z.Merge(common.Hash{}, x.Nodes)
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// Merge y into x
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x.Merge(common.Hash{}, y.Nodes)
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x = z
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}
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}
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