5bf8769fb0
* trie: use pooling of iterator states in iterator The node iterator burns through a lot of memory while iterating a trie, and a lot of that can be avoided by using a fairly small pool (max 40 items). name old time/op new time/op delta Iterator-8 6.22ms ± 3% 5.40ms ± 6% -13.18% (p=0.008 n=5+5) name old alloc/op new alloc/op delta Iterator-8 2.36MB ± 0% 1.67MB ± 0% -29.23% (p=0.008 n=5+5) name old allocs/op new allocs/op delta Iterator-8 37.0k ± 0% 29.8k ± 0% ~ (p=0.079 n=4+5) * ethdb/memorydb: avoid one copying of key By making the transformation from []byte to string at an earlier point, we save an allocation which otherwise happens later on. name old time/op new time/op delta BatchAllocs-8 412µs ± 6% 382µs ± 2% -7.18% (p=0.016 n=5+4) name old alloc/op new alloc/op delta BatchAllocs-8 480kB ± 0% 490kB ± 0% +1.93% (p=0.008 n=5+5) name old allocs/op new allocs/op delta BatchAllocs-8 3.03k ± 0% 2.03k ± 0% -32.98% (p=0.008 n=5+5)
51 lines
1.5 KiB
Go
51 lines
1.5 KiB
Go
// Copyright 2018 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 memorydb
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import (
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"encoding/binary"
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"testing"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/ethdb/dbtest"
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)
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func TestMemoryDB(t *testing.T) {
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t.Run("DatabaseSuite", func(t *testing.T) {
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dbtest.TestDatabaseSuite(t, func() ethdb.KeyValueStore {
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return New()
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})
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})
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}
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// BenchmarkBatchAllocs measures the time/allocs for storing 120 kB of data
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func BenchmarkBatchAllocs(b *testing.B) {
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b.ReportAllocs()
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var key = make([]byte, 20)
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var val = make([]byte, 100)
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// 120 * 1_000 -> 120_000 == 120kB
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for i := 0; i < b.N; i++ {
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batch := New().NewBatch()
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for j := uint64(0); j < 1000; j++ {
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binary.BigEndian.PutUint64(key, j)
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binary.BigEndian.PutUint64(val, j)
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batch.Put(key, val)
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}
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batch.Write()
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}
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}
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