From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: CPU troubles with kvm 83 redhat 5.4 windows 2008 server 64 bits Date: Sun, 01 Nov 2009 17:35:41 +0200 Message-ID: <4AEDAACD.7070007@redhat.com> References: <23e336b00910290811m2465eb66ta2c2b28b47c475ff@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org To: Arnaud Maillet Return-path: Received: from mx1.redhat.com ([209.132.183.28]:21014 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752744AbZKAPfk (ORCPT ); Sun, 1 Nov 2009 10:35:40 -0500 In-Reply-To: <23e336b00910290811m2465eb66ta2c2b28b47c475ff@mail.gmail.com> Sender: kvm-owner@vger.kernel.org List-ID: On 10/29/2009 05:11 PM, Arnaud Maillet wrote: > Hello world, > > I used to use Xen on my server but due to a non-patched cygwin problem > I installed kvm 83 on my redhat 5.4 with the red hat rpm. > > I found some troubles with a windows 2008 server 64 bits guest. When I > install a software like an anti-virus it takes a lot of time compare > to Xen ( that takes 10 times more time on kvm) . > > The guest task manager displays 100% of the cpu is used but with the > virt-manager (host) I can see just 7.5% of the cpu is used. Do you > have any solutions ? > It's probably disk activity. Can you verify with vmstat? If so, try using an lvm volume instead of a qcow2 file. -- error compiling committee.c: too many arguments to function