From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andi Kleen Subject: Re: unable to get load latency info Date: Fri, 28 Feb 2014 05:42:21 -0800 Message-ID: <87bnxrcq0y.fsf@tassilo.jf.intel.com> References: <1393568679.86476.YahooMailNeo@web125402.mail.ne1.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mga11.intel.com ([192.55.52.93]:39708 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751791AbaB1NmW convert rfc822-to-8bit (ORCPT ); Fri, 28 Feb 2014 08:42:22 -0500 In-Reply-To: <1393568679.86476.YahooMailNeo@web125402.mail.ne1.yahoo.com> (Muthusamy's message of "Thu, 27 Feb 2014 22:24:39 -0800 (PST)") Sender: linux-perf-users-owner@vger.kernel.org List-ID: To: Muthusamy Cc: "linux-perf-users@vger.kernel.org" Muthusamy writes: > perf version 3.12.11 > [root@rafa tmp]# ./perf stat -e r100b pwd =C2=A0### (I have tried wit= h > other data intensive programs too) I don't think r100b is a valid event on Westmere. Not sure where you go= t that from. As others pointed out you need to use perf mem record/report with sampling (but note that it reports use-latency, not load-latency) -Andi --=20 ak@linux.intel.com -- Speaking for myself only