On Wed, Sep 23, 2009 at 06:43:12PM +0300, Moni Shoua wrote: > In the man page for clock_gettime() I see that > CLOCK_PROCESS_CPUTIME_ID may be more accurate for (high) performance > measurements. What do you think?
The CPUTIME counters are of the 'time spent running code' variety, they do not time absolute time and they are executed in the kernel. CLOCK_MONOTONIC is the closest thing to tsc The man page is a bit misleading.. See the SUSv3 spec: https://www.opengroup.org/onlinepubs/000095399/functions/clock_getres.html Jason _______________________________________________ general mailing list general@lists.openfabrics.org http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
