golang[85]-测试读锁的性能

测试读锁的性能

package main

import (
	"math/rand"
	"sync"
	"testing"
	"time"
)



var m map[int]string
var lock  sync.RWMutex
func init(){
	rand.Seed(time.Now().Unix())
	m:=make(map[int]string,100000)
	for i:=0;i<100000;i++{
		m[i] = "helloworld"
	}
}
func Benchmark1(b *testing.B) {
	for i := 0; i < b.N; i++ {
		_ = m[rand.Int()%100000]
	}
}

func Benchmark2(b *testing.B) {
	for i := 0; i < b.N; i++ {
		lock.RLock()
		_ = m[rand.Int()%100000]
		lock.RUnlock()
	}
}

bench

go test . -bench .
goos: darwin
goarch: amd64
pkg: gitlab.followme.com/CopyTradingGo/tools/GRPC_TEST/test3
Benchmark1-12           100000000               18.9 ns/op
Benchmark2-12           50000000                29.4 ns/op
PASS