Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756245AbaGaFuk (ORCPT ); Thu, 31 Jul 2014 01:50:40 -0400 Received: from mga11.intel.com ([192.55.52.93]:13495 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751362AbaGaFuj (ORCPT ); Thu, 31 Jul 2014 01:50:39 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,769,1400050800"; d="scan'208";a="578044563" Date: Thu, 31 Jul 2014 13:50:35 +0800 From: Aaron Lu To: Mel Gorman Cc: Stephen Rothwell , LKML , lkp@01.org Subject: [LKP] [mm] b72fd1470c9: -41.7% perf-profile.cpu-cycles.get_page_from_freelist.__alloc_pages_nodemask.alloc_pages_current.__page_cache_alloc.pagecache_get_page Message-ID: <20140731055035.GB19742@aaronlu.sh.intel.com> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="ftEhullJWpWg/VHq" Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --ftEhullJWpWg/VHq Content-Type: text/plain; charset=us-ascii Content-Disposition: inline FYI, we noticed the below changes on git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master commit b72fd1470c9735f53485d089aa918dc327a86077 ("mm: rearrange zone fields into read-only, page alloc, statistics and page reclaim lines") test case: lkp-st02/dd-write/5m-11HDD-JBOD-cfq-xfs-10dd e28c951ff01a805 b72fd1470c9735f53485d089a --------------- ------------------------- 1.06 ~ 6% -41.7% 0.62 ~ 3% TOTAL perf-profile.cpu-cycles.get_page_from_freelist.__alloc_pages_nodemask.alloc_pages_current.__page_cache_alloc.pagecache_get_page 1.34 ~ 2% -19.8% 1.07 ~ 2% TOTAL perf-profile.cpu-cycles.__block_write_begin.xfs_vm_write_begin.generic_perform_write.xfs_file_buffered_aio_write.xfs_file_write_iter 1.19 ~ 5% -12.1% 1.05 ~ 4% TOTAL perf-profile.cpu-cycles.copy_from_user_atomic_iovec.iov_iter_copy_from_user_atomic.generic_perform_write.xfs_file_buffered_aio_write.xfs_file_write_iter 2.78 ~ 1% -16.3% 2.32 ~ 4% TOTAL perf-profile.cpu-cycles.__clear_user.read_zero.read_zero.vfs_read.sys_read 2.96e+09 ~ 4% -5.2% 2.806e+09 ~ 0% TOTAL perf-stat.cache-misses 3.86e+12 ~ 5% -5.2% 3.658e+12 ~ 1% TOTAL perf-stat.ref-cycles 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, Aaron --ftEhullJWpWg/VHq Content-Type: text/plain; charset=us-ascii Content-Disposition: attachment; filename=reproduce 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/sdb1 mkfs -t xfs /dev/sdj1 mkfs -t xfs /dev/sdh1 mkfs -t xfs /dev/sde1 mkfs -t xfs /dev/sdc1 mkfs -t xfs /dev/sdk1 mkfs -t xfs /dev/sdd1 mkfs -t xfs /dev/sdf1 mkfs -t xfs /dev/sdg1 mkfs -t xfs /dev/sdi1 mkfs -t xfs /dev/sdl1 mount -t xfs -o nobarrier,inode64 /dev/sdb1 /fs/sdb1 mount -t xfs -o nobarrier,inode64 /dev/sdc1 /fs/sdc1 mount -t xfs -o nobarrier,inode64 /dev/sdd1 /fs/sdd1 mount -t xfs -o nobarrier,inode64 /dev/sde1 /fs/sde1 mount -t xfs -o nobarrier,inode64 /dev/sdf1 /fs/sdf1 mount -t xfs -o nobarrier,inode64 /dev/sdg1 /fs/sdg1 mount -t xfs -o nobarrier,inode64 /dev/sdh1 /fs/sdh1 mount -t xfs -o nobarrier,inode64 /dev/sdi1 /fs/sdi1 mount -t xfs -o nobarrier,inode64 /dev/sdj1 /fs/sdj1 mount -t xfs -o nobarrier,inode64 /dev/sdk1 /fs/sdk1 mount -t xfs -o nobarrier,inode64 /dev/sdl1 /fs/sdl1 dd if=/dev/zero of=/fs/sdb1/zero-1 status=noxfer & dd if=/dev/zero of=/fs/sdc1/zero-1 status=noxfer & dd if=/dev/zero of=/fs/sdd1/zero-1 status=noxfer & dd if=/dev/zero of=/fs/sde1/zero-1 status=noxfer & dd if=/dev/zero of=/fs/sdf1/zero-1 status=noxfer & dd if=/dev/zero of=/fs/sdg1/zero-1 status=noxfer & dd if=/dev/zero of=/fs/sdh1/zero-1 status=noxfer & dd if=/dev/zero of=/fs/sdi1/zero-1 status=noxfer & dd if=/dev/zero of=/fs/sdj1/zero-1 status=noxfer & dd if=/dev/zero of=/fs/sdk1/zero-1 status=noxfer & dd if=/dev/zero of=/fs/sdl1/zero-1 status=noxfer & dd if=/dev/zero of=/fs/sdb1/zero-2 status=noxfer & dd if=/dev/zero of=/fs/sdc1/zero-2 status=noxfer & dd if=/dev/zero of=/fs/sdd1/zero-2 status=noxfer & dd if=/dev/zero of=/fs/sde1/zero-2 status=noxfer & dd if=/dev/zero of=/fs/sdf1/zero-2 status=noxfer & dd if=/dev/zero of=/fs/sdg1/zero-2 status=noxfer & dd if=/dev/zero of=/fs/sdh1/zero-2 status=noxfer & dd if=/dev/zero of=/fs/sdi1/zero-2 status=noxfer & dd if=/dev/zero of=/fs/sdj1/zero-2 status=noxfer & dd if=/dev/zero of=/fs/sdk1/zero-2 status=noxfer & dd if=/dev/zero of=/fs/sdl1/zero-2 status=noxfer & dd if=/dev/zero of=/fs/sdb1/zero-3 status=noxfer & dd if=/dev/zero of=/fs/sdc1/zero-3 status=noxfer & dd if=/dev/zero of=/fs/sdd1/zero-3 status=noxfer & dd if=/dev/zero of=/fs/sde1/zero-3 status=noxfer & dd if=/dev/zero of=/fs/sdf1/zero-3 status=noxfer & dd if=/dev/zero of=/fs/sdg1/zero-3 status=noxfer & dd if=/dev/zero of=/fs/sdh1/zero-3 status=noxfer & dd if=/dev/zero of=/fs/sdi1/zero-3 status=noxfer & dd if=/dev/zero of=/fs/sdj1/zero-3 status=noxfer & dd if=/dev/zero of=/fs/sdk1/zero-3 status=noxfer & dd if=/dev/zero of=/fs/sdl1/zero-3 status=noxfer & dd if=/dev/zero of=/fs/sdb1/zero-4 status=noxfer & dd if=/dev/zero of=/fs/sdc1/zero-4 status=noxfer & dd if=/dev/zero of=/fs/sdd1/zero-4 status=noxfer & dd if=/dev/zero of=/fs/sde1/zero-4 status=noxfer & dd if=/dev/zero of=/fs/sdf1/zero-4 status=noxfer & dd if=/dev/zero of=/fs/sdg1/zero-4 status=noxfer & dd if=/dev/zero of=/fs/sdh1/zero-4 status=noxfer & dd if=/dev/zero of=/fs/sdi1/zero-4 status=noxfer & dd if=/dev/zero of=/fs/sdj1/zero-4 status=noxfer & dd if=/dev/zero of=/fs/sdk1/zero-4 status=noxfer & dd if=/dev/zero of=/fs/sdl1/zero-4 status=noxfer & dd if=/dev/zero of=/fs/sdb1/zero-5 status=noxfer & dd if=/dev/zero of=/fs/sdc1/zero-5 status=noxfer & dd if=/dev/zero of=/fs/sdd1/zero-5 status=noxfer & dd if=/dev/zero of=/fs/sde1/zero-5 status=noxfer & dd if=/dev/zero of=/fs/sdf1/zero-5 status=noxfer & dd if=/dev/zero of=/fs/sdg1/zero-5 status=noxfer & dd if=/dev/zero of=/fs/sdh1/zero-5 status=noxfer & dd if=/dev/zero of=/fs/sdi1/zero-5 status=noxfer & dd if=/dev/zero of=/fs/sdj1/zero-5 status=noxfer & dd if=/dev/zero of=/fs/sdk1/zero-5 status=noxfer & dd if=/dev/zero of=/fs/sdl1/zero-5 status=noxfer & dd if=/dev/zero of=/fs/sdb1/zero-6 status=noxfer & dd if=/dev/zero of=/fs/sdc1/zero-6 status=noxfer & dd if=/dev/zero of=/fs/sdd1/zero-6 status=noxfer & dd if=/dev/zero of=/fs/sde1/zero-6 status=noxfer & dd if=/dev/zero of=/fs/sdf1/zero-6 status=noxfer & dd if=/dev/zero of=/fs/sdg1/zero-6 status=noxfer & dd if=/dev/zero of=/fs/sdh1/zero-6 status=noxfer & dd if=/dev/zero of=/fs/sdi1/zero-6 status=noxfer & dd if=/dev/zero of=/fs/sdj1/zero-6 status=noxfer & dd if=/dev/zero of=/fs/sdk1/zero-6 status=noxfer & dd if=/dev/zero of=/fs/sdl1/zero-6 status=noxfer & dd if=/dev/zero of=/fs/sdb1/zero-7 status=noxfer & dd if=/dev/zero of=/fs/sdc1/zero-7 status=noxfer & dd if=/dev/zero of=/fs/sdd1/zero-7 status=noxfer & dd if=/dev/zero of=/fs/sde1/zero-7 status=noxfer & dd if=/dev/zero of=/fs/sdf1/zero-7 status=noxfer & dd if=/dev/zero of=/fs/sdg1/zero-7 status=noxfer & dd if=/dev/zero of=/fs/sdh1/zero-7 status=noxfer & dd if=/dev/zero of=/fs/sdi1/zero-7 status=noxfer & dd if=/dev/zero of=/fs/sdj1/zero-7 status=noxfer & dd if=/dev/zero of=/fs/sdk1/zero-7 status=noxfer & dd if=/dev/zero of=/fs/sdl1/zero-7 status=noxfer & dd if=/dev/zero of=/fs/sdb1/zero-8 status=noxfer & dd if=/dev/zero of=/fs/sdc1/zero-8 status=noxfer & dd if=/dev/zero of=/fs/sdd1/zero-8 status=noxfer & dd if=/dev/zero of=/fs/sde1/zero-8 status=noxfer & dd if=/dev/zero of=/fs/sdf1/zero-8 status=noxfer & dd if=/dev/zero of=/fs/sdg1/zero-8 status=noxfer & dd if=/dev/zero of=/fs/sdh1/zero-8 status=noxfer & dd if=/dev/zero of=/fs/sdi1/zero-8 status=noxfer & dd if=/dev/zero of=/fs/sdj1/zero-8 status=noxfer & dd if=/dev/zero of=/fs/sdk1/zero-8 status=noxfer & dd if=/dev/zero of=/fs/sdl1/zero-8 status=noxfer & dd if=/dev/zero of=/fs/sdb1/zero-9 status=noxfer & dd if=/dev/zero of=/fs/sdc1/zero-9 status=noxfer & dd if=/dev/zero of=/fs/sdd1/zero-9 status=noxfer & dd if=/dev/zero of=/fs/sde1/zero-9 status=noxfer & dd if=/dev/zero of=/fs/sdf1/zero-9 status=noxfer & dd if=/dev/zero of=/fs/sdg1/zero-9 status=noxfer & dd if=/dev/zero of=/fs/sdh1/zero-9 status=noxfer & dd if=/dev/zero of=/fs/sdi1/zero-9 status=noxfer & dd if=/dev/zero of=/fs/sdj1/zero-9 status=noxfer & dd if=/dev/zero of=/fs/sdk1/zero-9 status=noxfer & dd if=/dev/zero of=/fs/sdl1/zero-9 status=noxfer & dd if=/dev/zero of=/fs/sdb1/zero-10 status=noxfer & dd if=/dev/zero of=/fs/sdc1/zero-10 status=noxfer & dd if=/dev/zero of=/fs/sdd1/zero-10 status=noxfer & dd if=/dev/zero of=/fs/sde1/zero-10 status=noxfer & dd if=/dev/zero of=/fs/sdf1/zero-10 status=noxfer & dd if=/dev/zero of=/fs/sdg1/zero-10 status=noxfer & dd if=/dev/zero of=/fs/sdh1/zero-10 status=noxfer & dd if=/dev/zero of=/fs/sdi1/zero-10 status=noxfer & dd if=/dev/zero of=/fs/sdj1/zero-10 status=noxfer & dd if=/dev/zero of=/fs/sdk1/zero-10 status=noxfer & dd if=/dev/zero of=/fs/sdl1/zero-10 status=noxfer & sleep 298 killall -9 dd --ftEhullJWpWg/VHq-- -- To unsubscribe from this list: send the 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