Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752807AbaFGGxT (ORCPT ); Sat, 7 Jun 2014 02:53:19 -0400 Received: from mga09.intel.com ([134.134.136.24]:64282 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751860AbaFGGxS (ORCPT ); Sat, 7 Jun 2014 02:53:18 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.98,993,1392192000"; d="scan'208";a="524445267" Message-ID: <5392B6DC.6040502@intel.com> Date: Sat, 07 Jun 2014 14:53:16 +0800 From: Jet Chen User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 MIME-Version: 1.0 To: Eivind Sarto CC: NeilBrown , LKML , lkp@01.org, Fengguang Wu Subject: [raid5] cf170f3fa45: +4.8% vmstat.io.bo Content-Type: multipart/mixed; boundary="------------030901080405080605080103" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is a multi-part message in MIME format. --------------030901080405080605080103 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hi Eivind, FYI, we noticed the below changes on git://neil.brown.name/md for-next commit cf170f3fa451350e431314e1a0a52014fda4b2d6 ("raid5: avoid release list until last reference of the stripe") test case: lkp-st02/dd-write/11HDD-RAID5-cfq-xfs-10dd 8b32bf5e37328c0 cf170f3fa451350e431314e1a --------------- ------------------------- 486996 ~ 0% +4.8% 510428 ~ 0% TOTAL vmstat.io.bo 17643 ~ 1% -17.3% 14599 ~ 0% TOTAL vmstat.system.in 11633 ~ 4% -56.7% 5039 ~ 0% TOTAL vmstat.system.cs 109 ~ 1% +6.5% 116 ~ 1% TOTAL iostat.sdb.rrqm/s 109 ~ 2% +5.1% 114 ~ 1% TOTAL iostat.sdc.rrqm/s 110 ~ 2% +5.5% 117 ~ 0% TOTAL iostat.sdj.rrqm/s 12077 ~ 0% +4.8% 12660 ~ 0% TOTAL iostat.sde.wrqm/s 48775 ~ 0% +4.8% 51125 ~ 0% TOTAL iostat.sde.wkB/s 12077 ~ 0% +4.8% 12659 ~ 0% TOTAL iostat.sdb.wrqm/s 12076 ~ 0% +4.8% 12659 ~ 0% TOTAL iostat.sdd.wrqm/s 12077 ~ 0% +4.8% 12660 ~ 0% TOTAL iostat.sdf.wrqm/s 48775 ~ 0% +4.8% 51121 ~ 0% TOTAL iostat.sdb.wkB/s 12078 ~ 0% +4.8% 12659 ~ 0% TOTAL iostat.sdj.wrqm/s 12078 ~ 0% +4.8% 12660 ~ 0% TOTAL iostat.sdi.wrqm/s 12076 ~ 0% +4.8% 12658 ~ 0% TOTAL iostat.sdg.wrqm/s 48774 ~ 0% +4.8% 51122 ~ 0% TOTAL iostat.sdd.wkB/s 48776 ~ 0% +4.8% 51128 ~ 0% TOTAL iostat.sdf.wkB/s 48780 ~ 0% +4.8% 51121 ~ 0% TOTAL iostat.sdj.wkB/s 48779 ~ 0% +4.8% 51128 ~ 0% TOTAL iostat.sdi.wkB/s 48773 ~ 0% +4.8% 51119 ~ 0% TOTAL iostat.sdg.wkB/s 486971 ~ 0% +4.8% 510409 ~ 0% TOTAL iostat.md0.wkB/s 12076 ~ 0% +4.8% 12657 ~ 0% TOTAL iostat.sdc.wrqm/s 12077 ~ 0% +4.8% 12659 ~ 0% TOTAL iostat.sdh.wrqm/s 1910 ~ 0% +4.8% 2001 ~ 0% TOTAL iostat.md0.w/s 110 ~ 2% +6.5% 117 ~ 1% TOTAL iostat.sdk.rrqm/s 12077 ~ 0% +4.8% 12659 ~ 0% TOTAL iostat.sdk.wrqm/s 48772 ~ 0% +4.8% 51115 ~ 0% TOTAL iostat.sdc.wkB/s 48776 ~ 0% +4.8% 51121 ~ 0% TOTAL iostat.sdh.wkB/s 48777 ~ 0% +4.8% 51121 ~ 0% TOTAL iostat.sdk.wkB/s 109 ~ 2% +3.3% 113 ~ 1% TOTAL iostat.sde.rrqm/s 4.28e+09 ~ 0% -4.1% 4.104e+09 ~ 0% TOTAL perf-stat.cache-misses 8.654e+10 ~ 0% +4.7% 9.058e+10 ~ 0% TOTAL perf-stat.L1-dcache-store-misses 3.549e+09 ~ 1% +3.7% 3.682e+09 ~ 0% TOTAL perf-stat.L1-dcache-prefetches 6.764e+11 ~ 0% +3.7% 7.011e+11 ~ 0% TOTAL perf-stat.dTLB-stores 6.759e+11 ~ 0% +3.7% 7.011e+11 ~ 0% TOTAL perf-stat.L1-dcache-stores 4.731e+10 ~ 0% +3.6% 4.903e+10 ~ 0% TOTAL perf-stat.L1-dcache-load-misses 3.017e+12 ~ 0% +3.5% 3.121e+12 ~ 0% TOTAL perf-stat.instructions 1.118e+12 ~ 0% +3.3% 1.156e+12 ~ 0% TOTAL perf-stat.dTLB-loads 1.117e+12 ~ 0% +3.2% 1.152e+12 ~ 0% TOTAL perf-stat.L1-dcache-loads 3.022e+12 ~ 0% +3.2% 3.119e+12 ~ 0% TOTAL perf-stat.iTLB-loads 5.613e+11 ~ 0% +3.2% 5.794e+11 ~ 0% TOTAL perf-stat.branch-instructions 5.62e+11 ~ 0% +3.1% 5.793e+11 ~ 0% TOTAL perf-stat.branch-loads 1.343e+09 ~ 0% +2.6% 1.378e+09 ~ 0% TOTAL perf-stat.LLC-store-misses 2.073e+10 ~ 0% +2.9% 2.133e+10 ~ 1% TOTAL perf-stat.LLC-loads 4.854e+10 ~ 0% +1.6% 4.931e+10 ~ 0% TOTAL perf-stat.cache-references 1.167e+10 ~ 0% +1.4% 1.183e+10 ~ 0% TOTAL perf-stat.L1-icache-load-misses 7068624 ~ 4% -56.4% 3078966 ~ 0% TOTAL perf-stat.context-switches 2.214e+09 ~ 1% -7.8% 2.041e+09 ~ 1% TOTAL perf-stat.LLC-load-misses 131433 ~ 0% -18.9% 106597 ~ 1% TOTAL perf-stat.cpu-migrations Legend: ~XX% - stddev percent [+-]XX% - change percent 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 --------------030901080405080605080103 Content-Type: text/plain; charset=UTF-8; name="reproduce" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="reproduce" mdadm -q --create /dev/md0 --chunk=256 --level=raid5 --raid-devices=11 --force --assume-clean /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1 /dev/sdf1 /dev/sdg1 /dev/sdh1 /dev/sdi1 /dev/sdj1 /dev/sdk1 /dev/sdl1 echo 1 > /sys/kernel/debug/tracing/events/writeback/balance_dirty_pages/enable echo 1 > /sys/kernel/debug/tracing/events/writeback/bdi_dirty_ratelimit/enable echo 1 > /sys/kernel/debug/tracing/events/writeback/global_dirty_state/enable echo 1 > /sys/kernel/debug/tracing/events/writeback/writeback_single_inode/enable mkfs -t xfs /dev/md0 mount -t xfs -o nobarrier,inode64 /dev/md0 /fs/md0 dd if=/dev/zero of=/fs/md0/zero-1 status=none & dd if=/dev/zero of=/fs/md0/zero-2 status=none & dd if=/dev/zero of=/fs/md0/zero-3 status=none & dd if=/dev/zero of=/fs/md0/zero-4 status=none & dd if=/dev/zero of=/fs/md0/zero-5 status=none & dd if=/dev/zero of=/fs/md0/zero-6 status=none & dd if=/dev/zero of=/fs/md0/zero-7 status=none & dd if=/dev/zero of=/fs/md0/zero-8 status=none & dd if=/dev/zero of=/fs/md0/zero-9 status=none & dd if=/dev/zero of=/fs/md0/zero-10 status=none & sleep 600 killall -9 dd --------------030901080405080605080103-- -- 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/