Profiling helps developers understand which part of their application (ideally down to the function and line of code) is slowing it down. With that insight you are able to effectively optimize your application. In this talk I will show how using Grafana Pyroscope you can collect, aggregated and visualize Profiles. We will also look at how combining distributed tracing using Grafana Tempo, can help understanding resource consumption per request. While there is a focus on the Go ecosystem, most of the content of the talk is transferable to other languages.