From mboxrd@z Thu Jan 1 00:00:00 1970 From: Samuel Thibault Subject: Re: [SPAM] About the differences between Version 3.3 and Version 3.0 Date: Thu, 28 Aug 2008 09:51:34 +0100 Message-ID: <20080828085134.GA4523@implementation.uk.xensource.com> References: <419869332.17872@bjut.edu.cn> <7820E802F3B24CF3B3D1BCBB1F907793@ff76d11953be449> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Return-path: Content-Disposition: inline In-Reply-To: <7820E802F3B24CF3B3D1BCBB1F907793@ff76d11953be449> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Fang Yuming Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org Fang Yuming, le Thu 28 Aug 2008 09:48:47 +0800, a =E9crit : > 1. If there are many disk requests coming from different domains > simultaneously, how would the backend driver of the domain0 process > these requests? Does it processes them through FIFO algorithm? They are just queued in the dom0 kernel, which schedules them just like process requests. > 2. In version 3.0, where is the code about disk backend driver of > domain0? Is it in linux-2.6-xen-sparse\drivers\xen\blkback? Yes. > Do these codes include the algorithm processing disk requests from > different domains? No, Xen just lets linux do that, in block/*iosched.c > 3. I found the newest Version is Version 3.3, can anyone tell me the ma= jors differences between=20 > Version 3.3 and Version 3.0? See the announces of 3.1, 3.2 and 3.3. > And is there any change in the part of virtual disk, especially the > scheduling alogithm of different disk requests from domains? Again, that's just dom0's Linux matter. Samuel