.Net Core Profiling examples

This repository contains the slides and code for my OpenF# 2019 presentation An introduction to profiling and performance analysis in .NET Core 3. It consists of the slides at the top-level (in .ppt and .pdf variants) as individual folders for each of the three worked examples I cover in the talk.

Prerequisites

Each example is a self-contained project with dockerfiles to build and run the sample, so the only real requirement should be having docker installed on your machine. Check the README.md in each folder for additional details.

Topics

Debugging memory leaks

This sample covers how to use the dotnet-dump tool to collect and analyze memory dumps of a running application. It will also cover more in-depth investigations using LLDB directly.

Profiling CPU usage

This sample covers how to use dotnet-trace and speedscope to collect and view CPU traces for your application. It also demonstrates the use of the perf tool on Linux for on-device profiling when a graphical user interface isn't available.

Diagnosing logic errors

This sample covers how to use your debugger's thread information together with dotnet-sos to investigate incorrect logic in your application.

Useful links

• the dotnet/diagnostics repository
• the .Net Core 3.0 SDK download page