Stephane, On Wed, May 09, 2007 at 11:34:59AM +0200, St?phane Zuckerman wrote: > > We're trying to measure L2D MISSES on a Xeon Woodcrest (a dual cpu, dual > core machine). > > We've tried different hardware counters, namely : > > - LAST_LEVEL_CACHE_MISSES, which, the documentation says, is equivalent > to L2_RQSTS:I_STATE (invalid cachelines), but doesn't count the hardware > prefetches > > - L2_RQSTS:MESI, and various combinations between M/E/S/I options, as > well as PREFETCH combined with the mask SELF. > > We're trying to measure accurately the L2 data misses, but we're getting > inconsistent results. How must we proceed ? >
If you are using pfmon, please provide exact command line. Also you need to define what you mean exactly by inconsistent. That are always some fluctuations from one run to the next. -- -Stephane _______________________________________________ perfmon mailing list [email protected] http://www.hpl.hp.com/hosted/linux/mail-archives/perfmon/
