From: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Subject: Re: [RFC] IO scheduler based IO controller V9
Date: Mon, 07 Sep 2009 10:14:06 +0800
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To: Vivek Goyal <vgoyal@redhat.com>
Cc: dhaval@linux.vnet.ibm.com, peterz@infradead.org, dm-devel@redhat.com, dpshah@google.com, jens.axboe@oracle.com, agk@redhat.com, balbir@linux.vnet.ibm.com, paolo.valente@unimore.it, jmarchan@redhat.com, fernando@oss.ntt.co.jp, mikew@google.com, jmoyer@redhat.com, nauman@google.com, mingo@elte.hu, m-ikeda@ds.jp.nec.com, riel@redhat.com, lizf@cn.fujitsu.com, fchecconi@gmail.com, s-uchida@ap.jp.nec.com, containers@lists.linux-foundation.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, righi.andrea@gmail.com, torvalds@linux-foundation.org
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Hi Vivek,

Here is the vanilla kernel and V9 comparision.

                           Normal Read  |  Random Read  |  Normal Write  |  Random Write

vanilla(Avg of 3 times)   67580 KiB/s     3540 KiB/s      61964 KiB/s      9823 KiB/s

V9(Avg of 3 times)        68954 KiB/s     3567 KiB/s      60654 KiB/s      9858 KiB/s

Performance                +2.0%           +0.7%          -2.1%             +0.3%