From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 715CDC433F4 for ; Mon, 24 Sep 2018 14:29:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3767B21480 for ; Mon, 24 Sep 2018 14:29:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3767B21480 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731909AbeIXUby (ORCPT ); Mon, 24 Sep 2018 16:31:54 -0400 Received: from mx1.redhat.com ([209.132.183.28]:46558 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728743AbeIXUby (ORCPT ); Mon, 24 Sep 2018 16:31:54 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 09BF4307D851; Mon, 24 Sep 2018 14:29:30 +0000 (UTC) Received: from krava (unknown [10.43.17.97]) by smtp.corp.redhat.com (Postfix) with SMTP id F1EBE18426; Mon, 24 Sep 2018 14:29:27 +0000 (UTC) Date: Mon, 24 Sep 2018 16:29:27 +0200 From: Jiri Olsa To: Alexey Budankov Cc: Jiri Olsa , Arnaldo Carvalho de Melo , lkml , Ingo Molnar , Namhyung Kim , Alexander Shishkin , Peter Zijlstra , Andi Kleen Subject: Re: [RFCv2 00/48] perf tools: Add threads to record command Message-ID: <20180924142927.GA22809@krava> References: <20180913125450.21342-1-jolsa@kernel.org> <20180914082653.GG24224@krava> <20180914082858.GH24224@krava> <71153c79-f0b9-4bf7-7491-202f46c6b5ed@linux.intel.com> <4f63c3d5-2a33-28ed-4e45-086045e9ab50@linux.intel.com> <20180923193001.GD30923@krava> <15042139-23ee-3bb7-4307-276e505a4607@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.48]); Mon, 24 Sep 2018 14:29:30 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Sep 24, 2018 at 04:09:09PM +0300, Alexey Budankov wrote: > Hi, > > On 24.09.2018 10:02, Alexey Budankov wrote: > > Hi, > > > > On 23.09.2018 22:30, Jiri Olsa wrote: > >> On Fri, Sep 21, 2018 at 09:13:08AM +0300, Alexey Budankov wrote: > >> > >> SNIP > >> > >>> Events: > >>> cpu/period=P,event=0x3c/Duk;CPU_CLK_UNHALTED.THREAD > >>> cpu/period=P,umask=0x3/Duk;CPU_CLK_UNHALTED.REF_TSC > >>> cpu/period=P,event=0xc0/Duk;INST_RETIRED.ANY > >>> cpu/period=0xaae61,event=0xc2,umask=0x10/uk;UOPS_RETIRED.ALL > >>> cpu/period=0x11171,event=0xc2,umask=0x20/uk;UOPS_RETIRED.SCALAR_SIMD > >>> cpu/period=0x11171,event=0xc2,umask=0x40/uk;UOPS_RETIRED.PACKED_SIMD > >>> > >>> ================================================= > >>> > >>> Command: > >>> /usr/bin/time /tmp/vtune_amplifier_2019.574715/bin64/perf.thr record --threads=T \ > >>> -a -N -B -T -R --call-graph dwarf,1024 --user-regs=ip,bp,sp \ > >>> -e cpu/period=P,event=0x3c/Duk,\ > >>> cpu/period=P,umask=0x3/Duk,\ > >>> cpu/period=P,event=0xc0/Duk,\ > >>> cpu/period=0x30d40,event=0xc2,umask=0x10/uk,\ > >>> cpu/period=0x4e20,event=0xc2,umask=0x20/uk,\ > >>> cpu/period=0x4e20,event=0xc2,umask=0x40/uk \ > >>> --clockid=monotonic_raw -- ./matrix.(icc|gcc) > >> > >> hum, so I guess the results suck because of the -a option, > >> getting extra samples for all the perf record threads > >> > >> could you try without the -a? you monitor only user events, > >> so you're interested only in ./matrix.* samples, right? > > > > Ok, trying without -a, in per-process mode. > > Command: > > /usr/bin/time ./perf.thr record --threads=T \ > -N -B -T -R --call-graph dwarf,1024 --user-regs=ip,bp,sp \ > -e cpu/period=P,event=0x3c/Duk,\ > cpu/period=P,umask=0x3/Duk,\ > cpu/period=P,event=0xc0/Duk,\ > cpu/period=0xaae61,event=0xc2,umask=0x10/uk,\ > cpu/period=0x11171,event=0xc2,umask=0x20/uk,\ > cpu/period=0x11171,event=0xc2,umask=0x40/uk \ > --clockid=monotonic_raw -- ./matrix.gcc > > Workload: matrix multiplication in 128 threads > > T : 272 > P (period, ms) : 0.35 > runtime overhead (%) : 13x ~ 87.73 / 6.81 how do you meassure this? > data loss (%) : 0 > LOST events : 36 > SAMPLE events : 8048542 > perf.data size (GiB) : 10 any idea why does it have some much more samples? thanks, jirka