6.5 性能分析: pprof 工具的简单使用

1.2 准备代码¶

先创建临时项目

go mod init iswbm.com/demo-pprof

然后准备两个文件：

package main

import (
  "github.com/pkg/profile"
        "math/rand"
)

const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"

func randomString(n int) string {
  b := make([]byte, n)
  for i := range b {
      b[i] = letterBytes[rand.Intn(len(letterBytes))]
  }
  return string(b)
}

func concat(n int) string {
  s := ""
  for i := 0; i < n; i++ {
      s += randomString(n)
  }
  return s
}

func main() {
        defer profile.Start(profile.MemProfile, profile.MemProfileRate(1)).Stop()
  concat(100)
}