Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753965Ab2B0OmN (ORCPT ); Mon, 27 Feb 2012 09:42:13 -0500 Received: from mail-pw0-f46.google.com ([209.85.160.46]:36827 "EHLO mail-pw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753568Ab2B0OmL (ORCPT ); Mon, 27 Feb 2012 09:42:11 -0500 Authentication-Results: mr.google.com; spf=pass (google.com: domain of dsahern@gmail.com designates 10.68.136.4 as permitted sender) smtp.mail=dsahern@gmail.com; dkim=pass header.i=dsahern@gmail.com Message-ID: <4F4B963F.4060705@gmail.com> Date: Mon, 27 Feb 2012 07:42:07 -0700 From: David Ahern User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:10.0.2) Gecko/20120216 Thunderbird/10.0.2 MIME-Version: 1.0 To: Yuanfang Chen CC: linux-kernel@vger.kernel.org, Namhyung Kim Subject: Re: perf record: can I specify multiple events and use different sample-after value References: <4F4484AC.9050500@lge.com> <87ehtnhz9w.fsf@gmail.com> <4F45E9C5.4020900@lge.com> <4F468EBB.9000209@gmail.com> <4F4AF727.2040105@gmail.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1520 Lines: 49 On 2/27/12 6:58 AM, Yuanfang Chen wrote: > On Mon, Feb 27, 2012 at 8:56 AM, Yuanfang Chen wrote: >> >> On Feb 26, 2012 10:23 PM, "David Ahern" wrote: >>> >>> On 2/24/12 3:41 PM, Yuanfang Chen wrote: >>>> >>>> I think I'll settle with perf record for now. Still, unlike trace >>>> event, sample count is not meaningful for PMU event. Output of "perf >>>> script" does not include period value. One line of code will do the >>>> work. >>>> >>>> lude 17342 750118.202915: raw 0x3c: 86754 ffffffff8115f6b9 >>>> __mem_cgroup_commit_char >>>> lude 17342 750118.203025: raw 0x3c: 1027634 ffffffff811344b9 >>>> __mem_cgroup_commit_char >>>> >>>> 86754, 1027634 is the period value. But I'm not sure which is the PMU >>>> value, is it just period value, or period x sample after. If so, what >>>> is the sample after value? >>> >>> >>> You lost me. You modified perf-script to print the period? >>> >>> Are you asking for the PMU counter value for 0x3c? > > yes perf-record does not get counter values when samples are genereated. > >>> >>> What perf commands are you running? > > perf script > (with no options) record command? I don't see what the 86754 and 1902764 values are in your example output above. David -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/