From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brian Jackson Subject: Re: XP smp using a lot of CPU [SOLVED] Date: Fri, 15 May 2009 18:00:28 -0500 Message-ID: References: <1242175298.15140.12.camel@iron.psg.net> <4A0A6F12.9000909@redhat.com> <1242331271.30072.2.camel@iron.psg.net> <20090515145651.GB6304@amt.cnet> <1242402117.17637.14.camel@corn.betterworld.us> <1242419061.2852.6.camel@iron.psg.net> Mime-Version: 1.0 (Apple Message framework v935.3) Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Cc: KVM To: Ross Boylan Return-path: Received: from theiggy.com ([66.220.1.110]:38937 "EHLO mail.theiggy.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753232AbZEOXCh (ORCPT ); Fri, 15 May 2009 19:02:37 -0400 In-Reply-To: <1242419061.2852.6.camel@iron.psg.net> Sender: kvm-owner@vger.kernel.org List-ID: On May 15, 2009, at 3:24 PM, Ross Boylan wrote: > Using ACPI fixes the problem; CPU useage is now quite low. Start line > was > sudo vdeq kvm -net nic,vlan=1,macaddr=52:54:a0:12:01:00 \ > -net vde,vlan=1,sock=/var/run/vde2/tap0.ctl \ > -boot d -cdrom /usr/local/backup/XPProSP3.iso \ > -std-vga -hda /dev/turtle/XP00 \ > -soundhw es1370 -localtime -m 1G -smp 2 > I switched to -boot c later. > > I ended up doing a fresh install; my repair got mucked up and I got > the > message "The requested lookup key was not found in any active > activation > context" when I entered a location into MSIE, including when I tried > to > run Windows Update. Googling showed this might indicate some > permission > or file corruption issues. They may have happened during my earlier > (virtual) system hang. > > My experience suggests a theory: if you use SMP with XP (i.e., more > than > 1 virtual processor) you should enable acpi, i.e., not say -no- > acpi. It > this is true, the advice to run windows with -no-acpi should > probably be > updated. It's possible single CPU systems are affected as well. I removed the note about -no-acpi from the howto on the wiki. I don't think that's been true for a long time. --Iggy > > > Ross >