Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932481AbbFJVUx (ORCPT ); Wed, 10 Jun 2015 17:20:53 -0400 Received: from mail.kernel.org ([198.145.29.136]:51845 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751121AbbFJVUn (ORCPT ); Wed, 10 Jun 2015 17:20:43 -0400 MIME-Version: 1.0 In-Reply-To: <1433830169.1197.6.camel@hasee> References: <1432318723-18829-1-git-send-email-mlin@kernel.org> <1432318723-18829-2-git-send-email-mlin@kernel.org> <20150526143626.GA4315@redhat.com> <20150526160400.GB4715@redhat.com> <20150528003627.GD32216@agk-dp.fab.redhat.com> <1433138551.11778.4.camel@hasee> <20150604210617.GA23710@redhat.com> <1433830169.1197.6.camel@hasee> Date: Wed, 10 Jun 2015 14:20:37 -0700 Message-ID: Subject: Re: [PATCH v4 01/11] block: make generic_make_request handle arbitrarily sized bios From: Ming Lin To: Mike Snitzer Cc: Ming Lei , dm-devel@redhat.com, Christoph Hellwig , Alasdair G Kergon , Lars Ellenberg , Philip Kelleher , Joshua Morris , Christoph Hellwig , Kent Overstreet , Nitin Gupta , Oleg Drokin , Al Viro , Jens Axboe , Andreas Dilger , Geoff Levand , Jiri Kosina , lkml , Jim Paris , Minchan Kim , Dongsu Park , drbd-user@lists.linbit.com Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4933 Lines: 131 On Mon, Jun 8, 2015 at 11:09 PM, Ming Lin wrote: > On Thu, 2015-06-04 at 17:06 -0400, Mike Snitzer wrote: >> We need to test on large HW raid setups like a Netapp filer (or even >> local SAS drives connected via some SAS controller). Like a 8+2 drive >> RAID6 or 8+1 RAID5 setup. Testing with MD raid on JBOD setups with 8 >> devices is also useful. It is larger RAID setups that will be more >> sensitive to IO sizes being properly aligned on RAID stripe and/or chunk >> size boundaries. > > Here are tests results of xfs/ext4/btrfs read/write on HW RAID6/MD RAID6/DM stripe target. > Each case run 0.5 hour, so it took 36 hours to finish all the tests on 4.1-rc4 and 4.1-rc4-patched kernels. > > No performance regressions were introduced. > > Test server: Dell R730xd(2 sockets/48 logical cpus/264G memory) > HW RAID6/MD RAID6/DM stripe target were configured with 10 HDDs, each 280G > Stripe size 64k and 128k were tested. > > devs="/dev/sdb /dev/sdc /dev/sdd /dev/sde /dev/sdf /dev/sdg /dev/sdh /dev/sdi /dev/sdj /dev/sdk" > spare_devs="/dev/sdl /dev/sdm" > stripe_size=64 (or 128) > > MD RAID6 was created by: > mdadm --create --verbose /dev/md0 --level=6 --raid-devices=10 $devs --spare-devices=2 $spare_devs -c $stripe_size > > DM stripe target was created by: > pvcreate $devs > vgcreate striped_vol_group $devs > lvcreate -i10 -I${stripe_size} -L2T -nstriped_logical_volume striped_vol_group > > Here is an example of fio script for stripe size 128k: > [global] > ioengine=libaio > iodepth=64 > direct=1 > runtime=1800 > time_based > group_reporting > numjobs=48 > gtod_reduce=0 > norandommap > write_iops_log=fs > > [job1] > bs=1280K > directory=/mnt > size=5G > rw=read > > All results here: http://minggr.net/pub/20150608/fio_results/ > > Results summary: > > 1. HW RAID6: stripe size 64k > 4.1-rc4 4.1-rc4-patched > ------- --------------- > (MB/s) (MB/s) > xfs read: 821.23 812.20 -1.09% > xfs write: 753.16 754.42 +0.16% > ext4 read: 827.80 834.82 +0.84% > ext4 write: 783.08 777.58 -0.70% > btrfs read: 859.26 871.68 +1.44% > btrfs write: 815.63 844.40 +3.52% > > 2. HW RAID6: stripe size 128k > 4.1-rc4 4.1-rc4-patched > ------- --------------- > (MB/s) (MB/s) > xfs read: 948.27 979.11 +3.25% > xfs write: 820.78 819.94 -0.10% > ext4 read: 978.35 997.92 +2.00% > ext4 write: 853.51 847.97 -0.64% > btrfs read: 1013.1 1015.6 +0.24% > btrfs write: 854.43 850.42 -0.46% > > 3. MD RAID6: stripe size 64k > 4.1-rc4 4.1-rc4-patched > ------- --------------- > (MB/s) (MB/s) > xfs read: 847.34 869.43 +2.60% > xfs write: 198.67 199.03 +0.18% > ext4 read: 763.89 767.79 +0.51% > ext4 write: 281.44 282.83 +0.49% > btrfs read: 756.02 743.69 -1.63% > btrfs write: 268.37 265.93 -0.90% > > 4. MD RAID6: stripe size 128k > 4.1-rc4 4.1-rc4-patched > ------- --------------- > (MB/s) (MB/s) > xfs read: 993.04 1014.1 +2.12% > xfs write: 293.06 298.95 +2.00% > ext4 read: 1019.6 1020.9 +0.12% > ext4 write: 371.51 371.47 -0.01% > btrfs read: 1000.4 1020.8 +2.03% > btrfs write: 241.08 246.77 +2.36% > > 5. DM: stripe size 64k > 4.1-rc4 4.1-rc4-patched > ------- --------------- > (MB/s) (MB/s) > xfs read: 1084.4 1080.1 -0.39% > xfs write: 1071.1 1063.4 -0.71% > ext4 read: 991.54 1003.7 +1.22% > ext4 write: 1069.7 1052.2 -1.63% > btrfs read: 1076.1 1082.1 +0.55% > btrfs write: 968.98 965.07 -0.40% > > 6. DM: stripe size 128k > 4.1-rc4 4.1-rc4-patched > ------- --------------- > (MB/s) (MB/s) > xfs read: 1020.4 1066.1 +4.47% > xfs write: 1058.2 1066.6 +0.79% > ext4 read: 990.72 988.19 -0.25% > ext4 write: 1050.4 1070.2 +1.88% > btrfs read: 1080.9 1074.7 -0.57% > btrfs write: 975.10 972.76 -0.23% Hi Mike, How about these numbers? I'm also happy to run other fio jobs your team used. Thanks. -- 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/