From mboxrd@z Thu Jan 1 00:00:00 1970 From: Muthusamy Subject: unable to get load latency info Date: Thu, 27 Feb 2014 22:24:39 -0800 (PST) Message-ID: <1393568679.86476.YahooMailNeo@web125402.mail.ne1.yahoo.com> Reply-To: Muthusamy Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from nm17-vm6.bullet.mail.ne1.yahoo.com ([98.138.91.110]:43412 "EHLO nm17-vm6.bullet.mail.ne1.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750795AbaB1Gbm convert rfc822-to-8bit (ORCPT ); Fri, 28 Feb 2014 01:31:42 -0500 References: Sender: linux-perf-users-owner@vger.kernel.org List-ID: To: "linux-perf-users@vger.kernel.org" Hi, I am trying to get the memory load latency info using perf, but I am al= ways getting 0. Can you please help me in understanding what I am missing. Below are th= e details [root@rafa tmp]# ./perf --version perf version 3.12.11 [root@rafa tmp]# ./perf stat -e r100b pwd =A0### (I have tried with oth= er data intensive programs too) /tmp/cms/tmp =A0Performance counter stats for 'pwd': =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A00 r100b =A0 =A0 =A0 =A0 =A0 =A0 =A0 = =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0= =A0 =A0=A0 =A0 =A0 =A0 =A00.000846849 seconds time elapsed [root@rafa tmp]# uname -a Linux rafa 2.6.32-431.el6.x86_64 #1 SMP Sun Nov 10 22:19:54 EST 2013 x8= 6_64 x86_64 x86_64 GNU/Linux [root@rafa tmp]# cat /proc/cpuinfo processor: 0 vendor_id: GenuineIntel cpu family: 6 model: 26 model name: Intel(R) Xeon(R) CPU =A0 =A0 =A0 =A0 =A0 X5550 =A0@ 2.67GHz stepping : 5 cpu MHz: 1600.000 cache size: 8192 KB physical id: 0 siblings: 1 core id: 0 cpu cores: 1 apicid: 0 initial apicid: 0 fpu: yes fpu_exception: yes cpuid level: 11 wp: yes flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pa= t pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdts= cp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc= aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm = dca sse4_1 sse4_2 popcnt lahf_lm ida dts tpr_shadow vnmi flexpriority e= pt vpid bogomips: 5333.09 clflush size: 64 cache_alignment: 64 address sizes: 40 bits physical, 48 bits virtual power management: processor: 1 vendor_id : GenuineIntel cpu family: 6 model: 26 model name: Intel(R) Xeon(R) CPU =A0 =A0 =A0 =A0 =A0 X5550 =A0@ 2.67GHz stepping: 5 cpu MHz: 1600.000 cache size: 8192 KB physical id : 1 siblings: 1 core id: 0 cpu cores: 1 apicid: 16 initial apicid: 16 fpu: yes fpu_exception: yes cpuid level: 11 wp: yes flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pa= t pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdts= cp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc= aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm = dca sse4_1 sse4_2 popcnt lahf_lm ida dts tpr_shadow vnmi flexpriority e= pt vpid bogomips: 5332.56 clflush size: 64 cache_alignment: 64 address sizes: 40 bits physical, 48 bits virtual power management: [root@rafa tmp]# Let me know if any other details are also required and steps on how to = get them. Thanks, Muthusamy C