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Date: Wed, 01 Dec 2010 14:42:56 -0500
From: Rik van Riel <riel@redhat.com>
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Subject: [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to
	start/stop a VCPU (v2)
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To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: kvm@vger.kernel.org, Mike Galbraith <efault@gmx.de>, qemu-devel@nongnu.org, vatsa@linux.vnet.ibm.com, Chris Wright <chrisw@sous-sol.org>, Anthony Liguori <aliguori@linux.vnet.ibm.com>, Avi Kivity <avi@redhat.com>

On 12/01/2010 02:35 PM, Peter Zijlstra wrote:
> On Wed, 2010-12-01 at 14:24 -0500, Rik van Riel wrote:

>> Even if we equalized the amount of CPU time each VCPU
>> ends up getting across some time interval, that is no
>> guarantee they get useful work done, or that the time
>> gets fairly divided to _user processes_ running inside
>> the guest.
>
> Right, and Jeremy was working on making the guest load-balancer aware of
> that so the user-space should get fairly scheduled on service (of
> course, that's assuming you run a linux guest with that logic in).

At that point, you might not need the host side balancing
any more, since the guest can move around processes
internally (if needed).

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