From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: Question about the ability of credit scheduler to handle I/O and CPU intensive VMs Date: Mon, 13 Sep 2010 16:29:31 -0700 Message-ID: <4C8EB3DB.8060005@goop.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Yuehai Xu Cc: George.Dunlap@eu.citrix.com, xen-devel@lists.xensource.com, yhxu@wayne.edu, Keir.Fraser@eu.citrix.com List-Id: xen-devel@lists.xenproject.org On 09/13/2010 02:37 PM, Yuehai Xu wrote: > The document http://www.xen.org/files/xensummit_intel09/George_Dunlap.pdf > has explained why credit scheduler doesn't work well for CPU+I/O > intensive workload, however, since nothing seems happened after this > short paper, at least the performance of I/O remains poor. Is it > because of some technical issues? Have you tried the credit2 scheduler? J