From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin Mailand Subject: Re: virtio-blk performance regression and qemu-kvm Date: Mon, 05 Mar 2012 17:44:52 +0100 Message-ID: <4F54ED84.7030601@tuxadero.com> References: <20120210143639.GA17883@gmail.com> <4F54E620.8060400@tuxadero.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Dongsu Park , qemu-devel@nongnu.org, kvm@vger.kernel.org To: Stefan Hajnoczi Return-path: Received: from einhorn.in-berlin.de ([192.109.42.8]:57305 "EHLO einhorn.in-berlin.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753421Ab2CEQo5 (ORCPT ); Mon, 5 Mar 2012 11:44:57 -0500 In-Reply-To: Sender: kvm-owner@vger.kernel.org List-ID: Am 05.03.2012 17:35, schrieb Stefan Hajnoczi: >> 1. Test on i7 Laptop with Cpu governor "ondemand". >> > >> > v0.14.1 >> > bw=63492KB/s iops=15873 >> > bw=63221KB/s iops=15805 >> > >> > v1.0 >> > bw=36696KB/s iops=9173 >> > bw=37404KB/s iops=9350 >> > >> > master >> > bw=36396KB/s iops=9099 >> > bw=34182KB/s iops=8545 >> > >> > Change the Cpu governor to "performance" >> > master >> > bw=81756KB/s iops=20393 >> > bw=81453KB/s iops=20257 > Interesting finding. Did you show the 0.14.1 results with > "performance" governor? Hi Stefan, all results are with "ondemand" except the one where I changed it to "performance" Do you want a v0.14.1 test with the governor on "performance"? -martin