Profile a Go program

pprof.go

import (
  "fmt"
  "os"
  "github.com/pkg/profile"
)

func main() {
	p := profile.Start(profile.CPUProfile, profile.ProfilePath("."), profile.NoShutdownHook)
	defer p.Stop()

	// catch ^C and stop the profiler
	c := make(chan os.Signal, 1)
	signal.Notify(c, os.Interrupt)
	go func() {
		for sig := range c {
			// sig is a ^C, handle it
			fmt.Println(sig.String())
			p.Stop()
			os.Exit(1)
		}
	}() 
}

// # read the pprof file
// # show top 10 nodes

// go tool pprof cpu.pprof
// (pprof) top
// output ...