Manually enabling/disabling perf is too slow when you want to profile a part that takes <1ms to execute, but it is an option if nothing better exists. It would

Manually enabling/disabling perf is too slow when you want to profile a part that takes <1ms to execute, but it is an option if nothing better exists. It would be great if you could just isolated interesting code in microbenchmark but we all know that this will skew results. About code execution profiling, I usually use Intel PT so yes, I know where I want to look.