Aspnet app sample to detect threadpool starvation using:
Run the app using docker
docker compose up app
Monitor the application using dotnet-counters
docker exec -it thread-pool-test-app dotnet-counters monitor -n dotnet
To get the dotnet-stack run the following
docker exec -it thread-pool-test-app dotnet-stack report -n dotnet
Running the app will start a container with dotnet-monitor. This container is setup to get diagnostic commands from the app container through a diagnostic port. Dotnet monitor exposes endpoints with usefull information:
A full list can be seem here: https://github.com/dotnet/dotnet-monitor/blob/main/documentation/api/README.md.
The metrics endpoint captures metrics in the Prometheus exposition format.
To start grafana use the command bellow:
docker compose up grafana
The compose provisions grafana with prometheus datasource and the community provided dotnet-monitor dashboard. Once is started up go to http://localhost:3000/dashboards (user: admin, password: admin)
Start the load test that hits the sync endpoint
docker compose up send-load-sync
Start the load test that hits the async endpoint
docker compose up send-load-async