prof安装

cd ~
git clone https://github.com/brendangregg/FlameGraph.git
cd FlameGraph-master
cp flamegraph.pl /usr/local/bin


// 检测FlameGraph安装是否成功
flamegraph.pl -h

火焰图安装

go get github.com/uber/go-torch

代码埋点

const (
   cpuProfile = "cpuprof"
   memProfile = "memprof"
)

// cpu埋点
fc, _ := os.Create(cpuProfile)
pprof.StartCPUProfile(fc)
defer func() {
   pprof.StopCPUProfile()
   fc.Close()
}()

// mem埋点
fm, _ := os.Create(memProfile)
pprof.WriteHeapProfile(fm)
defer fm.Close()

代码开始运行生成.prof文件

./main

解析prof 文件

go tool pprof -svg ./main cpuprof
go tool pprof -svg ./main memprof

生成火焰图

go-torch --binaryname=./main --binaryinput=cpuprof
go-torch --binaryname=./main --binaryinput=memprof

参考文献

• https://blog.csdn.net/qq_17779891/article/details/90242862
• https://blog.csdn.net/Vivid_110/article/details/100561459