Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756242AbaGDDzU (ORCPT ); Thu, 3 Jul 2014 23:55:20 -0400 Received: from mga11.intel.com ([192.55.52.93]:4229 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754150AbaGDDzT (ORCPT ); Thu, 3 Jul 2014 23:55:19 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,598,1400050800"; d="scan'208";a="557304702" Date: Fri, 4 Jul 2014 11:54:55 +0800 From: Fengguang Wu To: Jet Chen Cc: Aaron Tomlin , Dave Hansen , LKP , LKML Subject: Re: [kernel/watchdog.c] ed235875e2c: -14.2% will-it-scale.scalability Message-ID: <20140704035455.GA5524@localhost> References: <53B6235B.4050205@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <53B6235B.4050205@intel.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all, Sorry please ignore this report: it seems there are no obvious relationship between the code change and the regression. Thanks, Fengguang On Fri, Jul 04, 2014 at 11:45:31AM +0800, Jet Chen wrote: > Hi Aaron, > > FYI, we noticed the below changes on > > commit ed235875e2ca983197831337a986f0517074e1a0 ("kernel/watchdog.c: print traces for all cpus on lockup detection") > > test case: lkp-snb01/will-it-scale/signal1 > > f3aca3d09525f87 ed235875e2ca983197831337a > --------------- ------------------------- > 0.12 ~ 0% -14.2% 0.10 ~ 0% TOTAL will-it-scale.scalability > 506146 ~ 0% -4.4% 484004 ~ 0% TOTAL will-it-scale.per_process_ops > 12193 ~ 4% +12.6% 13726 ~ 6% TOTAL slabinfo.kmalloc-256.active_objs > 12921 ~ 4% +12.3% 14516 ~ 5% TOTAL slabinfo.kmalloc-256.num_objs > 123094 ~ 3% -6.5% 115117 ~ 3% TOTAL meminfo.Committed_AS > > Legend: > ~XX% - stddev percent > [+-]XX% - change percent > > > will-it-scale.per_process_ops > > 515000 ++-----------------------------------------------------------------+ > | .*.*.*.*. .* | > 510000 *+* *.*.* + .*. *. | > 505000 ++ * *.*.*.*. .* .*.*.*. .*.*.*. + *.*.*.*.*.* > | * * * *.* | > 500000 ++ | > | | > 495000 ++ | > | | > 490000 ++ | > 485000 ++ O O O O O O | > | O O O O O O O O O O | > 480000 O+O O O O O | > | | > 475000 ++-----------------------------------------------------------------+ > > > [*] bisect-good sample > [O] bisect-bad sample > > > Disclaimer: > Results have been estimated based on internal Intel analysis and are provided > for informational purposes only. Any difference in system hardware or software > design or configuration may affect actual performance. > > Thanks, > Jet > > echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu10/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu11/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu12/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu13/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu14/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu15/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu16/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu17/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu18/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu19/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu20/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu21/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu22/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu23/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu24/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu25/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu26/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu27/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu28/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu29/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu30/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu31/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu4/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu5/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu6/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu7/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu8/cpufreq/scaling_governor > echo performance > /sys/devices/system/cpu/cpu9/cpufreq/scaling_governor > ./runtest.py signal1 25 1 8 16 24 32 > -- 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/