package main
import "runtime/pprof"
func main() {
pprof.StartCPUProfile(os.Stderr)
defer pprof.StopCPUProfile()
// ...
}
go get -u github.com/google/pprof
go run main.go 2> cpu.pprof
sudo apt install -y graphviz
go tool pprof -http=:8080 cpu.pprof