From 'dotnet run' to 'Hello World!'
summary
Walks through the actual startup work behind dotnet run to print Hello World, showing over 2.5 million lines in the core CLR repo, the GC condensed in a single ~36,000‑line file, and ~68 initialization steps the runtime runs before user code executes. Uses PerfView flame graphs and ClrMD plus the open source code to show most time hits EE startup, type loading, JIT and hosting API work (demonstrated live) and explains tiered compilation and why small apps pay heavy startup costs.
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chapters (7)
- 0:00Start
- 6:57Outline
- 7:42CoreCLR Repository
- 16:49Virtual Machine (VM)
- 19:38Hosting API
- 21:59Initialising the CLR
- 44:22Resources
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