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Re: [Qemu-discuss] High CPU in idle Windows guest

From: Terry Glanfield
Subject: Re: [Qemu-discuss] High CPU in idle Windows guest
Date: Sun, 10 May 2015 01:44:53 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4 (berkeley-unix)

Hi Dave,

With -enable-kvm I get.

Could not access KVM kernel module: No such file or directory
failed to initialize KVM: No such file or directory

Where to next?  I'm willing to help diagnose it in whatever way I can.


Dave Gosselin <address@hidden> writes:
> Try supplying the -enable-kvm option to your qemu arguments. If it
> doesn't work then the support may not be compiled in to qemu or the
> driver may not be loaded into the kernel. Let me know.
> Dave Gosselin
> Sent from my iPhone
>> On May 9, 2015, at 18:52, Terry Glanfield <address@hidden> wrote:
>> Hi,
>> I'm running a freshly installed Windows 7 domU on an up-to-date Debian
>> jessie machine running Xen 4.4.1-9. When the Windows machine is idle,
>> I'm seeing upwards of 10% CPU usage from the qemu-system-i386 instance.
>> Other Linux and FreeBSD machines register negligable CPU usage (<0.5%).
>> The server is an HP Proliant DL360 G7.
>> PV drivers don't seem to make any difference.
>> Data from perf attacthed to the process might give the best clues.
>> Any information as to why this processes is comsuming so much CPU would
>> be much appreciated.
>> Regards,
>> Terry.

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