[milianw]

Sad to see people are still unaware of modern perf profilers like hotspot, tracy, vtune, ...

they are easy to setup, work extremely efficient and can nowadays also catch off-cpu time. ctrl+c debugging finds you trivial stuff, but dismissing the real tools as unusable or inferior is simply ignorant.

> Unlike perf, gdb will give you a callstack even if the program was compiled without frame pointer support.

There is `--call-graph dwarf` and it exists since many years, and with `-z` it is pretty efficient and just works too - unless the stack gets too long, but even then it's good enough for profiling purposes...

> Also, sampling profilers are bad at tail latency - if something is usually fast but occasionally slow, you won’t be there to Ctrl-C it when it’s slow.

Very true, thankfully the flight recorder modes for profilers can help with that to a certain degree, with a potentially large sampling frequency.