mirror of
https://github.com/golang/go
synced 2024-10-04 04:31:21 -06:00
c14b2689f0
Linux/amd64, 2 x Intel Xeon E5620, 8 HT cores, 2.40GHz benchmark old ns/op new ns/op delta BenchmarkFinalizer 420.00 261.00 -37.86% BenchmarkFinalizer-2 985.00 201.00 -79.59% BenchmarkFinalizer-4 1077.00 244.00 -77.34% BenchmarkFinalizer-8 1155.00 180.00 -84.42% BenchmarkFinalizer-16 1182.00 184.00 -84.43% BenchmarkFinalizerRun 2128.00 1378.00 -35.24% BenchmarkFinalizerRun-2 1655.00 1418.00 -14.32% BenchmarkFinalizerRun-4 1634.00 1522.00 -6.85% BenchmarkFinalizerRun-8 2213.00 1581.00 -28.56% BenchmarkFinalizerRun-16 2424.00 1599.00 -34.03% Darwin/amd64, Intel L9600, 2 cores, 2.13GHz benchmark old ns/op new ns/op delta BenchmarkChanCreation 1451.00 926.00 -36.18% BenchmarkChanCreation-2 3124.00 1412.00 -54.80% BenchmarkChanCreation-4 6121.00 2628.00 -57.07% BenchmarkFinalizer 684.00 420.00 -38.60% BenchmarkFinalizer-2 11195.00 398.00 -96.44% BenchmarkFinalizer-4 15862.00 654.00 -95.88% BenchmarkFinalizerRun 2025.00 1397.00 -31.01% BenchmarkFinalizerRun-2 3920.00 1447.00 -63.09% BenchmarkFinalizerRun-4 9471.00 1545.00 -83.69% R=golang-dev, cw, rsc CC=golang-dev https://golang.org/cl/4963057
65 lines
1.3 KiB
Go
65 lines
1.3 KiB
Go
// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package runtime_test
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import (
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"runtime"
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"sync"
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"sync/atomic"
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"testing"
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)
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func fin(v *int) {
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}
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func BenchmarkFinalizer(b *testing.B) {
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const CallsPerSched = 1000
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procs := runtime.GOMAXPROCS(-1)
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N := int32(b.N / CallsPerSched)
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var wg sync.WaitGroup
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wg.Add(procs)
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for p := 0; p < procs; p++ {
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go func() {
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var data [CallsPerSched]*int
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for i := 0; i < CallsPerSched; i++ {
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data[i] = new(int)
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}
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for atomic.AddInt32(&N, -1) >= 0 {
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runtime.Gosched()
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for i := 0; i < CallsPerSched; i++ {
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runtime.SetFinalizer(data[i], fin)
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}
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for i := 0; i < CallsPerSched; i++ {
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runtime.SetFinalizer(data[i], nil)
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}
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}
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wg.Done()
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}()
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}
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wg.Wait()
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}
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func BenchmarkFinalizerRun(b *testing.B) {
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const CallsPerSched = 1000
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procs := runtime.GOMAXPROCS(-1)
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N := int32(b.N / CallsPerSched)
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var wg sync.WaitGroup
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wg.Add(procs)
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for p := 0; p < procs; p++ {
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go func() {
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for atomic.AddInt32(&N, -1) >= 0 {
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runtime.Gosched()
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for i := 0; i < CallsPerSched; i++ {
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v := new(int)
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runtime.SetFinalizer(v, fin)
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}
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runtime.GC()
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}
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wg.Done()
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}()
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}
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wg.Wait()
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}
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