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michalsustr | 1 month ago

What are your favorite tools for profiling/optimizing C and Rust code?

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lionkor|1 month ago

Definitely the combination of callgrind (valgrind --tool=callgrind) and kcachegrind, or the combination of HotSpot and perf.

I have toyed with Intel's vTune, but I felt it was very hard to get running so its discouraging before you even start. That said, if you need a lot of info on cache etc., vTune is fantastic.