build-parallelism

Diagnose and fix under-parallelized MSBuild builds. USE WHEN a multi-project solution build is slower than expected, doesn't speed up when you add cores, pegs a single core while others idle, or you want to know why -m isn't helping. Note: /maxcpucount default is 1 (sequential) — always pass -m for parallel builds. Covers finding the critical path (longest serial ProjectReference chain), graph build (/graph), BuildInParallel, and solution filters (.slnf). DO NOT USE FOR: single-project builds, incremental issues (use incremental-build), compilation slowness inside one project (use build-perf-diagnostics), non-MSBuild build systems.

License

MIT