48 lines
1.2 KiB
Go
48 lines
1.2 KiB
Go
// bulma/atomic_stress_test_demo.go
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package main
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import (
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"fmt"
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"sync"
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"sync/atomic"
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"time"
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)
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func main() {
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var counter atomic.Uint64
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var wg sync.WaitGroup
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// 压力测试配置：10000个goroutine，每个累加1000次，总计1亿次操作
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goroutineNum := 10000
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perGoroutineOps := 1000
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wg.Add(goroutineNum)
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start := time.Now()
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for i := 0; i < goroutineNum; i++ {
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go func() {
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defer wg.Done()
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for j := 0; j < perGoroutineOps; j++ {
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counter.Add(1) // 默认使用OrderSeqCst，安全稳定
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}
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}()
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}
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wg.Wait()
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cost := time.Since(start)
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expected := uint64(goroutineNum * perGoroutineOps)
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actual := counter.Load()
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// 验证结果：判断实际计数与预期计数是否一致，验证原子操作稳定性
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fmt.Printf("压力测试完成：%d个goroutine，每个执行%d次累加\n", goroutineNum, perGoroutineOps)
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fmt.Printf("预期计数: %d\n", expected)
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fmt.Printf("实际计数: %d\n", actual)
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fmt.Printf("执行耗时: %v\n", cost)
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fmt.Printf("操作吞吐量: %.2f万次/毫秒\n", float64(expected)/float64(cost.Milliseconds()))
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if actual == expected {
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fmt.Println("原子操作稳定可靠，无数据竞争！")
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} else {
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fmt.Printf("原子操作异常，计数偏差: %d\n", expected-actual)
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}
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}
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