From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755253AbaHUO36 (ORCPT ); Thu, 21 Aug 2014 10:29:58 -0400 Received: from mga01.intel.com ([192.55.52.88]:39621 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755018AbaHUO35 (ORCPT ); Thu, 21 Aug 2014 10:29:57 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,909,1400050800"; d="scan'208";a="579904626" Date: Thu, 21 Aug 2014 22:30:06 +0800 From: Fengguang Wu To: "Theodore Ts'o" Cc: ext4@mail.home.local, LKML , lkp@01.org Subject: [ext4] 71d4f7d0321: -49.6% xfstests.generic.274.seconds Message-ID: <20140821143006.GA19943@localhost> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="xHFwDpU9dbj6ez1V" Content-Disposition: inline Content-Transfer-Encoding: 8bit User-Agent: Heirloom mailx 12.5 6/20/10 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --xHFwDpU9dbj6ez1V Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit Hi Ted, We noticed increased xfstests 274's test speed and the first good commit is 71d4f7d032149b935a26eb3ff85c6c837f3714e1 ("ext4: remove metadata reservation checks"). test case: snb-drag/xfstests/4HDD-ext4-generic-slow2 snb-drag is a Sandy Bridge PC with 6G memory. d5e03cbb0c88cd1 71d4f7d032149b935a26eb3ff --------------- ------------------------- 51 ± 2% -49.6% 25 ± 1% TOTAL xfstests.generic.274.seconds 817 ± 1% -3.0% 792 ± 1% TOTAL time.elapsed_time xfstests.generic.274.seconds 60 ++---------------------------------------------------------------------+ | | 55 ++ .*..*.. *.. *.. | | .*. . .. .. | 50 *+.*..*. *..*..*..* *..*..*..*..* * | | | 45 ++ | | | 40 ++ | | | 35 ++ | | | 30 ++ | | | 25 O+-O--O--O--O--O---O--O--O--O--O--O--O--O--O--O--O--O---O--O--O--O--O--O [*] 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, Fengguang --xHFwDpU9dbj6ez1V Content-Type: text/plain; charset=us-ascii Content-Disposition: attachment; filename=reproduce 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/cpu2/cpufreq/scaling_governor echo performance > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor mkfs -t ext4 -q /dev/sda7 mkfs -t ext4 -q /dev/sda10 mkfs -t ext4 -q /dev/sda6 mkfs -t ext4 -q /dev/sda5 mount -t ext4 /dev/sda10 /fs/sda10 mount -t ext4 /dev/sda5 /fs/sda5 mount -t ext4 /dev/sda6 /fs/sda6 mount -t ext4 /dev/sda7 /fs/sda7 export TEST_DIR=/fs/sda10 export TEST_DEV=/dev/sda10 export SCRATCH_MNT=/fs/scratch mkdir /fs/scratch -p export SCRATCH_DEV=/dev/sda7 ./check generic/224 generic/231 generic/274 generic/299 generic/300 --xHFwDpU9dbj6ez1V--