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RE: [Xen-users] Windows 2000 server VM on Xen open source CPU hog?

To: "Jan Bakuwel" <jan.bakuwel@xxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] Windows 2000 server VM on Xen open source CPU hog?
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Thu, 27 Aug 2009 09:18:38 +1000
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Thread-topic: [Xen-users] Windows 2000 server VM on Xen open source CPU hog?
> Hi,
> I'm running a Windows 2000 server and a Windows 2003 server as guests
> a Linux dom0.
> Windows 2000 server seems to hog the CPU (constant at 200%, ie. using
> two CPUs) according to xentop.
> Windows 2003 uses virtually no CPU.
> Any ideas how I can fix this?

What does Windows 2000 report it's CPU usage at?

Does the problem appear with only a single CPU (and preferably a UP

GPLPV (which doesn't work on W2K) has an option to patch windows kernels
< W2K3SP2 to improve performance. Backporting just that part might not
be a huge deal, although the problem that fixes wouldn't cause 2 cpu's
to be pegged at 100%...


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