On Thu, Jan 13, 2011 at 10:08:30PM -0500, Ryan Stone wrote: > 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.
Thanks. I'll give it a try, but my initial attempt seems to indicate that one needs to be root to use hwpmc. laptop:kargl[210] pmcstat -S unhalted-cycles -O /tmp/samples.out ../penetration pmcstat: ERROR: Cannot allocate system-mode pmc with specification "unhalted-cycles": Operation not permitted -- Steve _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
