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[Qemu-devel] [Bug 654913] Re: Windows XP uses 200% CPU when given 2 VCPU
From: |
.:. brainsik |
Subject: |
[Qemu-devel] [Bug 654913] Re: Windows XP uses 200% CPU when given 2 VCPUs |
Date: |
Wed, 20 Oct 2010 22:45:39 -0000 |
Thank you for looking into this issue. Do you know if later versions of
Windows work better in SMP? Like 2003?
.:.
--
Windows XP uses 200% CPU when given 2 VCPUs
https://bugs.launchpad.net/bugs/654913
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Status in QEMU: Invalid
Bug description:
When using libvirt to give a domain 2 CPUs (<domain
type='kvm'><vcpu>2</vcpu></domain>), the Windows XP kvm process will use 200%
CPU when Windows is idle. Switching the number of CPUs back to 1, the kvm
process gives normal idle percentages.
Using libvirt 0.8.3-1ubuntu9, tried with the following qemu-kvm packages:
qemu-kvm_0.12.4+noroms-0ubuntu7_amd64.deb
qemu-kvm_0.12.5+noroms-0ubuntu4_amd64.deb
The smp flag being set by libvirt is:
-smp 2,sockets=2,cores=1,threads=1
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