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=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS 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 8CA0FC433E0 for ; Tue, 19 Jan 2021 13:30:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3F6712312D for ; Tue, 19 Jan 2021 13:30:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392692AbhASN2J (ORCPT ); Tue, 19 Jan 2021 08:28:09 -0500 Received: from mail.skyhub.de ([5.9.137.197]:38586 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391542AbhASNS5 (ORCPT ); Tue, 19 Jan 2021 08:18:57 -0500 Received: from zn.tnic (p200300ec2f0bca001beaf3e1446171b7.dip0.t-ipconnect.de [IPv6:2003:ec:2f0b:ca00:1bea:f3e1:4461:71b7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id CA0741EC05F1; Tue, 19 Jan 2021 14:17:59 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1611062279; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=49X+dnnC4B/ABzZM6fYCQbbb7PQaNSr+M45P48fRRVo=; b=gfC4JVAPrd2rAZJy0ufv7U7FyT3q2WPsF7fWGSPqwSHylSY5cHS0PWdNGCWfrHTcpixcGX Xw4WPkYm3w6ND3AMHt+knar/UAOwijkUEBnNn2ANOrQJf8hNHq32QFHPyupYOj83o3Molu aUGwQp4TCwKJ6Og3MvYkAgOVGvWwb18= Date: Tue, 19 Jan 2021 14:17:59 +0100 From: Borislav Petkov To: Feng Tang Cc: "Paul E. McKenney" , kernel test robot , Jonathan Lemon , Tony Luck , LKML , x86@kernel.org, lkp@lists.01.org, lkp@intel.com, ying.huang@intel.com, zhengjun.xing@intel.com Subject: Re: [x86/mce] 7bb39313cd: netperf.Throughput_tps -4.5% regression Message-ID: <20210119131759.GL27433@zn.tnic> References: <20210112142109.GE30747@xsang-OptiPlex-9020> <20210112141438.GF13086@zn.tnic> <20210116035251.GB29609@shbuild999.sh.intel.com> <20210116153413.GP2743@paulmck-ThinkPad-P72> <20210116160921.GA101665@shbuild999.sh.intel.com> <20210119042721.GA12664@paulmck-ThinkPad-P72> <20210119100255.GC27433@zn.tnic> <20210119121505.GA111354@shbuild999.sh.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20210119121505.GA111354@shbuild999.sh.intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jan 19, 2021 at 08:15:05PM +0800, Feng Tang wrote: > On Tue, Jan 19, 2021 at 11:02:55AM +0100, Borislav Petkov wrote: > > On Mon, Jan 18, 2021 at 08:27:21PM -0800, Paul E. McKenney wrote: > > > I bet that the results vary depending on the type of CPU, and also on > > > the kernel address-space layout, which of course also varies based on > > > the Kconfig options. Let's see how the maintainers would like to proceed. > > > > So I ran the "reproduce" script in the original mail on a KBL box here > > with the .config tailored for it: > > > > cpu family : 6 > > model : 158 > > model name : Intel(R) Core(TM) i5-9600K CPU @ 3.70GHz > > stepping : 12 > > microcode : 0xd6 > > I will also try to find a similar KBL in 0day to run the job. This > -4.5% comes from a CascadeLake AP which is 4 nodes, 96C/192T. > > > and I get mixed results. But I'd need to know how exactly they generate > > the metrics "netperf.Throughput_total_tps" and "netperf.Throughput_tps" > > > > Feng? > > I have to admit I'm just a dumb user of 0day :) I'll leave this question > to Philip/Oliver/Rong who are from 0day team. > > I assumed you've cloned the lkp-tests.git, and seems one Ruby file > https://github.com/intel/lkp-tests/blob/master/stats/netperf is used to > process the output of the netperf. $ ../lkp-tests/stats/netperf < rc2.log Throughput_tps: 12759.701875000002 Throughput_total_tps: 204155.23000000004 workload: 61246569.000000015 $ ../lkp-tests/stats/netperf < with-holdout.log Throughput_tps: 12863.416875 Throughput_total_tps: 205814.67 workload: 61744401.00000001 So this definitely depends on the .config because in my case, *with* the holdout patch it is better vs plain 5.11-rc2. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette