From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934174AbcHDRDs (ORCPT ); Thu, 4 Aug 2016 13:03:48 -0400 Received: from mga02.intel.com ([134.134.136.20]:7828 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758854AbcHDRDq (ORCPT ); Thu, 4 Aug 2016 13:03:46 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.28,470,1464678000"; d="scan'208";a="1008505557" From: "Huang\, Ying" To: Jaegeuk Kim Cc: kernel test robot , , LKML , , "Huang\, Ying" Subject: Re: [LKP] [lkp] [f2fs] ec795418c4: fsmark.files_per_sec -36.3% regression References: <20160718020950.GB4986@yexl-desktop> <87twfmsndf.fsf@yhuang-mobile.sh.intel.com> Date: Thu, 04 Aug 2016 10:00:41 -0700 In-Reply-To: <87twfmsndf.fsf@yhuang-mobile.sh.intel.com> (Ying Huang's message of "Mon, 18 Jul 2016 13:27:24 -0700") Message-ID: <87bn18cvuu.fsf_-_@yhuang-mobile.sh.intel.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=ascii Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Jaegeuk, "Huang, Ying" writes: > Hi, > > I checked the comparison result below and found this is a regression for > fsmark.files_per_sec, not fsmark.app_overhead. > > Best Regards, > Huang, Ying > > kernel test robot writes: > >> FYI, we noticed a -36.3% regression of fsmark.files_per_sec due to commit: >> >> commit ec795418c41850056feb956534edf059dc1155d4 ("f2fs: use percpu_rw_semaphore") >> https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git dev-test I found this has been merged by upstream. Do you have some plan to fix it? Or you think the test itself has some problem? We have another 2 regressions - [lkp] [f2fs] 3bdad3c7ee: aim7.jobs-per-min -25.3% regression - [lkp] [f2fs] b93f771286: aim7.jobs-per-min -81.2% regression they are merged by upstream now too. So same questions for them too. Best Regards, Huang, Ying >> in testcase: fsmark >> on test machine: 72 threads Haswell-EP with 128G memory >> with following parameters: > cpufreq_governor=performance/disk=1SSD/filesize=8K/fs=f2fs/iterations=8/nr_directories=16d/nr_files_per_directory=256fpd/nr_threads=4/sync_method=fsyncBeforeClose/test_size=72G >> >> >> >> 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. >>