From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matt Chapman Date: Fri, 10 May 2002 09:20:06 +0000 Subject: [Linux-ia64] Strange performance monitoring results Message-Id: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org * Linux 2.4.18-ia64-020508 (CONFIG_PERFMON, !CONFIG_DISABLE_VHPT) * pfmon 1.0 * Uniprocessor Itanium C1-step * lat_ctx from LMbench 2.0p2 (ftp://ftp.bitmover.com/lmbench/) (Though I get the same results with 2.4.16 and pfmon 0.06a.) % pfmon -e ITLB_MISSES_FETCH,ITLB_INSERTS_HPW ./lat_ctx 5 "size=0k ovr=2.65 5 2.52 221400 ITLB_MISSES_FETCH 133 ITLB_INSERTS_HPW The ITLB misses figure seems much too big, especially given the number of hardware pagetable walker inserts is low. Every few times I also get very big figures for DTLB_MISSES, although not DTC_MISSES (I would have thought DTLB_MISSES should be less than DTC_MISSES?). Am I doing something wrong? Matt