golang性能分析

安装pprof

package main

import (
   _ "net/http/pprof"
)

func main() {
    if err := http.ListenAndServe(":6060", nil); err != nil {
        log.Fatal(err)
    }
}

采集分析数据

# 浏览器访问 http://127.0.0.1:6060/debug/pprof

采样分析

# cpu占用情况的采样信息
go tool pprof http://127.0.0.1:6060/debug/pprof/profile

# allocs信息
go tool pprof http://127.0.0.1:6060/debug/pprof/allocs

# heap信息
go tool pprof http://127.0.0.1:6060/debug/pprof/heap

# 命令
top -> list -> web

跟踪分析

# trace
wget -o trace.out http://127.0.0.1:6060/debug/pprof/trace && go tool trace trace.out