From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752284Ab1FORKW (ORCPT ); Wed, 15 Jun 2011 13:10:22 -0400 Received: from mail-vx0-f174.google.com ([209.85.220.174]:48378 "EHLO mail-vx0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751310Ab1FORKS convert rfc822-to-8bit (ORCPT ); Wed, 15 Jun 2011 13:10:18 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=KiKDmf22beNIvUipNNNGADnft8djFAcJgICRi1XnaQDJK3VpQl7hgjqXhLA/PJvjSk TTXedtblD9t5v2C10C2A2EDMRE6Ux6iqLh6vULDYtsKx2NQxQcmT59DkawJhmUrU/Qhb fMrWQn8uvtgLn3flO92mFMmcvdWlS7BNJkYJE= MIME-Version: 1.0 In-Reply-To: <4DF8DE26.1070301@redhat.com> References: <1308153214.7566.6.camel@jaguar> <4DF8DE26.1070301@redhat.com> Date: Wed, 15 Jun 2011 20:10:17 +0300 X-Google-Sender-Auth: p9g160HyFLPYmhAlxeH-ItipOAQ Message-ID: Subject: Re: [ANNOUNCE] Native Linux KVM tool v2 From: Pekka Enberg To: Avi Kivity Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Andrew Morton , Linus Torvalds , Ingo Molnar , Prasad Joshi , Sasha Levin , Cyrill Gorcunov , Asias He , Jens Axboe Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 15, 2011 at 7:30 PM, Avi Kivity wrote: > On 06/15/2011 06:53 PM, Pekka Enberg wrote: >> >> - Fast QCOW2 image read-write support beating Qemu in fio benchmarks. See >> the >>   following URL for test result details: https://gist.github.com/1026888 > > This is surprising.  How is qemu invoked? Prasad will have the details. Please note that the above are with Qemu defaults which doesn't use virtio. The results with virtio are little better but still in favor of tools/kvm. > btw the dump above is a little hard to interpret. It's what fio reports. The relevant bits are: Qemu: Run status group 0 (all jobs): READ: io=204800KB, aggrb=61152KB/s, minb=15655KB/s, maxb=17845KB/s, mint=2938msec, maxt=3349msec WRITE: io=68544KB, aggrb=28045KB/s, minb=6831KB/s, maxb=7858KB/s, mint=2292msec, maxt=2444msec Run status group 1 (all jobs): READ: io=204800KB, aggrb=61779KB/s, minb=15815KB/s, maxb=17189KB/s, mint=3050msec, maxt=3315msec WRITE: io=66576KB, aggrb=24165KB/s, minb=6205KB/s, maxb=7166KB/s, mint=2485msec, maxt=2755msec Run status group 2 (all jobs): READ: io=204800KB, aggrb=6722KB/s, minb=1720KB/s, maxb=1737KB/s, mint=30178msec, maxt=30467msec WRITE: io=65424KB, aggrb=2156KB/s, minb=550KB/s, maxb=573KB/s, mint=29682msec, maxt=30342msec Run status group 3 (all jobs): READ: io=204800KB, aggrb=6994KB/s, minb=1790KB/s, maxb=1834KB/s, mint=28574msec, maxt=29279msec WRITE: io=68192KB, aggrb=2382KB/s, minb=548KB/s, maxb=740KB/s, mint=27121msec, maxt=28625msec Disk stats (read/write): sdb: ios=60583/6652, merge=0/164, ticks=156340/672030, in_queue=828230, util=82.71% tools/kvm: Run status group 0 (all jobs): READ: io=204800KB, aggrb=149162KB/s, minb=38185KB/s, maxb=46030KB/s, mint=1139msec, maxt=1373msec WRITE: io=70528KB, aggrb=79156KB/s, minb=18903KB/s, maxb=23726KB/s, mint=804msec, maxt=891msec Run status group 1 (all jobs): READ: io=204800KB, aggrb=188235KB/s, minb=48188KB/s, maxb=57932KB/s, mint=905msec, maxt=1088msec WRITE: io=64464KB, aggrb=84821KB/s, minb=21751KB/s, maxb=27392KB/s, mint=570msec, maxt=760msec Run status group 2 (all jobs): READ: io=204800KB, aggrb=20005KB/s, minb=5121KB/s, maxb=5333KB/s, mint=9830msec, maxt=10237msec WRITE: io=66624KB, aggrb=6615KB/s, minb=1671KB/s, maxb=1781KB/s, mint=9558msec, maxt=10071msec Run status group 3 (all jobs): READ: io=204800KB, aggrb=66149KB/s, minb=16934KB/s, maxb=17936KB/s, mint=2923msec, maxt=3096msec WRITE: io=69600KB, aggrb=26717KB/s, minb=6595KB/s, maxb=7342KB/s, mint=2530msec, maxt=2605msec Disk stats (read/write): vdb: ios=61002/6654, merge=0/183, ticks=27270/205780, in_queue=232220, util=69.46%