* Linus Torvalds <torva...@linux-foundation.org> wrote:
> Make sure you actually use "perf record -e cycles:pp" or something
> that uses PEBS to get real profiles using CPU performance counters.
Btw., 'perf record -e cycles:pp' is the default now for modern versions
of perf tooling (on most x86 systems) - if you do 'perf record' it will
just use the most precise profiling mode available on that particular
CPU model.
If unsure you can check the event that was used, via:
triton:~> perf report --stdio 2>&1 | grep '# Samples'
# Samples: 27K of event 'cycles:pp'
Thanks,
Ingo
