Golang FlameGraph(火焰图)

1.安装组件

  1. 安装go-torch
    go get github.com/uber/go-torch
  2. 安装 FlameGraph
    cd $WORK_PATH && git clone https://github.com/brendangregg/FlameGraph.git
    export PATH=$PATH:$WORK_PATH/FlameGraph-master
  3. 安装graphviz
    yum install graphviz(CentOS, Redhat)

2.代码修改

package main

import (
    "net/http"
    "net/http/pprof"
)

func main() {
    // 主函数中添加
    go func() {
        http.HandleFunc("/debug/pprof/block", pprof.Index)
        http.HandleFunc("/debug/pprof/goroutine", pprof.Index)
        http.HandleFunc("/debug/pprof/heap", pprof.Index)
        http.HandleFunc("/debug/pprof/threadcreate", pprof.Index)

        http.ListenAndServe("0.0.0.0:8888", nil)
    }()

    var finishWaiter chan int
    <-finishWaiter
}

3.查看结果

运行上述程序后,使用如下命令生成CPU火焰图:
go-torch -u http://localhost:8888/debug/pprof/ -p > profile-local.svg
效果图如下:

 
profile-local.png

 

生成内存火焰图:
go-torch -u http://localhost:8888/debug/pprof/heap -p > heap-local.svg
效果图如下:

 
heap-local.png


作者:zr_hebo
链接:https://www.jianshu.com/p/1e784c387f45
來源:简书
简书著作权归作者所有,任何形式的转载都请联系作者获得授权并注明出处。
posted @ 2018-10-21 09:33  gao88  阅读(583)  评论(0编辑  收藏  举报