Pyroscope: Continuous Tracing in Go, Python, or Ruby

Recently I stumbled upon slow library/function problem and don't know chich part that causes it, and found out that there's a easy way to trace either Go, Ruby, or Python code using Pyroscope. The feature is a bit minimalist, there's no memory usage tracing yet unlike in gops or pprof. Pyroscope consist 2 parts: the server and the agent/client library (if using Golang) or executor (if using Ruby or Python). Here's the way how to run and start Pyroscope server:

# run server using docker

docker run -it -p 4040:4040 pyroscope/pyroscope:latest server

And here's the example on how to use the client library/agent (modifying Go's source code, just like in DataDog or any other APM tools) and install  the Pyroscope CLI to run Ruby/Python scripts:

# golang, add agent inside the source code

import "github.com/pyroscope-io/pyroscope/pkg/agent/profiler"

func main() {

  profiler.Start(profiler.Config{

    ApplicationName: "my.app.server", 

    ServerAddress:   "http://pyroscope:4040",

  })

  // rest of your code

}

# ruby or python, install CLI client 

cd /tmp

wget https://dl.pyroscope.io/release/pyroscope_0.0.28_amd64.deb

sudo apt-get install ./pyroscope_0.0.28_amd64.deb

# ruby

pyroscope exec ruby yourcode.rb

# python

pyroscope exec python yourcode.py

It would show something like this if you open the server URL (localhost:4040) in the browser, so you can check which part of the code that took most of the runtime.