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You don’t want to clutter up your computer with Docker, Prometheus, Grafana or even K8S just to monitor a Go app's heap size, right?

Use live-pprof to Monitor a Go app's performance. It launches in seconds, boosting your local development.

go-recipes

Xnip2024-09-10_04-58-57
live-pprof-HD.1080p.mov
Screenshots
Heap CPU Allocs Goroutine Detect Endpoints Options

Install

go install github.com/moderato-app/live-pprof@v1

Usage

Step 1: setup pprof endpoints

package main

import (
	"log"
	"net/http"
	_ "net/http/pprof"
)

func main() {
	log.Println(http.ListenAndServe("localhost:6060", nil))
}

Step 2: monitor the pprof endpoints

live-pprof 6060 
# Or:
live-pprof http://localhost:6060/debug/pprof
# Both commands will monitor http://localhost:6060/debug/pprof

Limitations

  • Metrics data is stored in the browser memory and is cleared on page refresh.
  • The page slows down as data grows due to charts rendering.

As you can see, live-pprof is mainly for local development. These limitations mean it’s not a replacement for Prometheus and Grafana.

Credits

image

Thanks to Golang Weekly for the shoutout!