If you use the Visual C++ compiler on Windows, vcperf is worth a look: https://github.com/microsoft/vcperf https://github.com/microsoft/vcperf - comes with VS20

If you use the Visual C++ compiler on Windows, vcperf is worth a look: https://github.com/microsoft/vcperf https://github.com/microsoft/vcperf - comes with VS2022, or you can build from github. I've used it with projects generated by UBT and CMake. I can't remember if it provides any info that'd let you assess the quality of build parallelism, but it does have some compiler front end info which is pretty straightforward to read. Particularly expensive headers (whether inherently so, or just because they're included a lot) are easy to find.