For local speedscope instances: npm install -g speedscope
dotnet tool install -g dotnet-trace
To start collecting a trace, use:
dotnet trace collect --name $name --output $name.nettrace
If you want to collect information about the startup sequence of the process, use something like:
DOTNET_DefaultDiagnosticPortSuspend=1 ./bin/net7.0/alloc
dotnet trace collect --name alloc --output alloc.nettrace --resume-runtime
Then convert it to speedscope format:
dotnet trace convert --format speedscope --output $name.json $name.nettrace
Then open it in your favourite browser:
open -a $BROWSER https://speedscope.app and upload the trace.
Demo sample projects:
- cpu-spin - simplest possible report
- alloc - showcases allocations surface as
UNMANAGED_CODE_TIME - cpu-background - showcases the utility of navigating through threads
- cpu-wait - wait time and how to look into it