Profiling code execution on amd64?

Ryan Stone rysto32 at
Fri Jan 14 03:32:57 UTC 2011

I would suggest using hwpmc for profiling:

# kldload hwpmc
# pmcstat -S unhalted-cycles -O /tmp/samples.out ../penetration
# pmcstat -R /tmp/samples.out -G /tmp/penetration.txt

You can also get pmcstat to generate gprof-compatible output with -g,
but I never use the mode so I'm really not sure what it gives you.  I
think that you have to run gprof on the output or something, but don't
hold me to that.

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