Project structure
├── go.mod
├── go.sum
├── main.go
go.mod
module github.com/rongfengliang/gopsutillearning
go 1.13
require (
github.com/shirou/gopsutil v2.19.11+incompatible
github. com / stretchr / testify v1 .4.0 // indirectly
golang. org / x / sys v0 .0.0 - 20,191,224,085,550 - c709ea063b76 // indirectly
)
Code
package main
import (
"fmt"
"log"
"net/http"
_ "net/http/pprof"
"github.com/shirou/gopsutil/mem"
)
Depending printinfo () {
for {
// fetch virtual mem info
mem, err := mem.VirtualMemory()
if err != nil {
fmt.Println("some wrong", err)
} else {
fmt.Println((mem.String()))
}
}
}
func main() {
go printinfo()
log.Println(http.ListenAndServe("0.0.0.0:6060", nil))
}
pprof use
- start up
go run main.go
- Basic Commands
go tool pprof http://localhost:6060/debug/pprof/profile?seconds=30
- effect
View map flame cpu
- Generate a profile
addresshttp://localhost:6060/debug/pprof/profile - View command:
pprof -http 0.0.0.0:8080 profile
- UI effects
- Figure flame
makefile build
For convenience, use make to build cross-platform executable files
- Makefile
build: clean compile
clean:
rm -rf pprof-demo-*
compile:
echo "Compiling for every OS and Platform"
GOOS=darwin GOARCH=amd64 go build -o pprof-demo-mac main.go
GOOS=linux GOARCH=amd64 go build -o pprof-demo-linux main.go
GOOS=windows GOARCH=amd64 go build -o pprof-demo-windows.exe main.go
- 使用
make build
说明
golang 的pprof 功能强大，是把应用性能分析的利器，注意需要安装graphviz，结合自己的系统选择安装对应的版本
参考资料
https://golang.org/pkg/net/http/pprof/
https://github.com/google/pprof
https://github.com/rongfengliang/gopsutillearning
https://github.com/shirou/gopsutil