From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f49.google.com (mail-pa0-f49.google.com [209.85.220.49]) by kanga.kvack.org (Postfix) with ESMTP id 223DB6B0036 for ; Thu, 22 May 2014 12:12:57 -0400 (EDT) Received: by mail-pa0-f49.google.com with SMTP id lj1so2660885pab.8 for ; Thu, 22 May 2014 09:12:56 -0700 (PDT) Received: from mga11.intel.com (mga11.intel.com. [192.55.52.93]) by mx.google.com with ESMTP id gt9si340961pac.80.2014.05.22.09.12.55 for ; Thu, 22 May 2014 09:12:56 -0700 (PDT) Date: Fri, 23 May 2014 00:14:16 +0800 From: Yuanhan Liu Subject: Re: [PATCH 0/3] Shrinkers and proportional reclaim Message-ID: <20140522161416.GD25013@yliu-dev.sh.intel.com> References: <1400749779-24879-1-git-send-email-mgorman@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1400749779-24879-1-git-send-email-mgorman@suse.de> Sender: owner-linux-mm@kvack.org List-ID: To: Mel Gorman Cc: Andrew Morton , Johannes Weiner , Hugh Dickins , Tim Chen , Dave Chinner , Yuanhan Liu , Bob Liu , Jan Kara , Rik van Riel , Linux Kernel , Linux-MM , Linux-FSDevel On Thu, May 22, 2014 at 10:09:36AM +0100, Mel Gorman wrote: > This series is aimed at regressions noticed during reclaim activity. The > first two patches are shrinker patches that were posted ages ago but never > merged for reasons that are unclear to me. I'm posting them again to see if > there was a reason they were dropped or if they just got lost. Dave? Time? > The last patch adjusts proportional reclaim. Yuanhan Liu, can you retest > the vm scalability test cases on a larger machine? Hugh, does this work > for you on the memcg test cases? Sure, and here is the result. I applied these 3 patches on v3.15-rc6, and head commit is 60c10afd. e82e0561 is the old commit that introduced the regression. The testserver has 512G memory and 120 CPU. It's a simple result; if you need more data, I can gather them and send it to you tomorrow: e82e0561 v3.15-rc6 60c10afd ---------------------------------------- 18560785 12232122 38868453 -34% +109 As you can see, the performance is back, and it is way much better ;) --yliu > > Based on ext4, I get the following results but unfortunately my larger test > machines are all unavailable so this is based on a relatively small machine. > > postmark > 3.15.0-rc5 3.15.0-rc5 > vanilla proportion-v1r4 > Ops/sec Transactions 21.00 ( 0.00%) 25.00 ( 19.05%) > Ops/sec FilesCreate 39.00 ( 0.00%) 45.00 ( 15.38%) > Ops/sec CreateTransact 10.00 ( 0.00%) 12.00 ( 20.00%) > Ops/sec FilesDeleted 6202.00 ( 0.00%) 6202.00 ( 0.00%) > Ops/sec DeleteTransact 11.00 ( 0.00%) 12.00 ( 9.09%) > Ops/sec DataRead/MB 25.97 ( 0.00%) 30.02 ( 15.59%) > Ops/sec DataWrite/MB 49.99 ( 0.00%) 57.78 ( 15.58%) > > ffsb (mail server simulator) > 3.15.0-rc5 3.15.0-rc5 > vanilla proportion-v1r4 > Ops/sec readall 9402.63 ( 0.00%) 9805.74 ( 4.29%) > Ops/sec create 4695.45 ( 0.00%) 4781.39 ( 1.83%) > Ops/sec delete 173.72 ( 0.00%) 177.23 ( 2.02%) > Ops/sec Transactions 14271.80 ( 0.00%) 14764.37 ( 3.45%) > Ops/sec Read 37.00 ( 0.00%) 38.50 ( 4.05%) > Ops/sec Write 18.20 ( 0.00%) 18.50 ( 1.65%) > > dd of a large file > 3.15.0-rc5 3.15.0-rc5 > vanilla proportion-v1r4 > WallTime DownloadTar 75.00 ( 0.00%) 61.00 ( 18.67%) > WallTime DD 423.00 ( 0.00%) 401.00 ( 5.20%) > WallTime Delete 2.00 ( 0.00%) 5.00 (-150.00%) > > stutter (times mmap latency during large amounts of IO) > > 3.15.0-rc5 3.15.0-rc5 > vanilla proportion-v1r4 > Unit >5ms Delays 80252.0000 ( 0.00%) 81523.0000 ( -1.58%) > Unit Mmap min 8.2118 ( 0.00%) 8.3206 ( -1.33%) > Unit Mmap mean 17.4614 ( 0.00%) 17.2868 ( 1.00%) > Unit Mmap stddev 24.9059 ( 0.00%) 34.6771 (-39.23%) > Unit Mmap max 2811.6433 ( 0.00%) 2645.1398 ( 5.92%) > Unit Mmap 90% 20.5098 ( 0.00%) 18.3105 ( 10.72%) > Unit Mmap 93% 22.9180 ( 0.00%) 20.1751 ( 11.97%) > Unit Mmap 95% 25.2114 ( 0.00%) 22.4988 ( 10.76%) > Unit Mmap 99% 46.1430 ( 0.00%) 43.5952 ( 5.52%) > Unit Ideal Tput 85.2623 ( 0.00%) 78.8906 ( 7.47%) > Unit Tput min 44.0666 ( 0.00%) 43.9609 ( 0.24%) > Unit Tput mean 45.5646 ( 0.00%) 45.2009 ( 0.80%) > Unit Tput stddev 0.9318 ( 0.00%) 1.1084 (-18.95%) > Unit Tput max 46.7375 ( 0.00%) 46.7539 ( -0.04%) > > fs/super.c | 16 +++++++++------- > mm/vmscan.c | 36 +++++++++++++++++++++++++----------- > 2 files changed, 34 insertions(+), 18 deletions(-) > > -- > 1.8.4.5 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org