On Thu, 2009-05-14 at 12:19 +0200, Johannes Schlatow wrote: > I had a similar problem some weeks ago. Finally I found out that my VM > running WinXP was working on a non-acpi system (maybe I started kvm > with -no-acpi option during the installation). In the Device Manager > there has to be the entry Computer->"ACPI Multiprocessor PC". > Otherwise the VM produced 100% real cpu load on my machines (the fans > were running on highest speed level). > I just started the WinXP installation in repair mode and this did fix > the problem. > > I hope this helps! > > regards > Johannes That may be it: I was running with -no-acpi. Various docs recommended this for Windows performance, but your comment reminded me that acpi is (I think) required for multiprocessors. I'll be in where I can check on this later today. Thanks. Ross > > On Wed, May 13, 2009 at 2:41 AM, Ross Boylan <ross@xxxxxxxxxxxxxxxx> > wrote: > I just installed XP into a new VM, specifying -smp 2 for the > machine. > According to top, it's using nearly 200% of a cpu even when > I'm not > doing anything. > > Is this real CPU useage, or just a reporting problem (just as > my disk > image is big according to ls, but isn't really)? > > If it's real, is there anything I can do about it? > > kvm 0.7.2 on Debian Lenny (but 2.6.29 kernel), amd64. Xeon > chips; 32 > bit version of XP pro installed, now fully patched (including > the > Windows Genuine Advantage stuff, though I cancelled it when it > wanted to > run). > > Task manager in XP shows virtually no CPU useage. > > Please cc me on responses. > > Thanks for any assistance. > -- > Ross Boylan wk: (415) > 514-8146 > 185 Berry St #5700 > ross@xxxxxxxxxxxxxxxx > Dept of Epidemiology and Biostatistics fax: (415) > 514-8150 > University of California, San Francisco > San Francisco, CA 94107-1739 hm: (415) > 550-1062 > > -- > To unsubscribe from this list: send the line "unsubscribe kvm" > in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at > http://vger.kernel.org/majordomo-info.html > > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
