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Re: [Xen-devel] Strange interdependace between domains

To: Simon Martin <furryfuttock@xxxxxxxxx>
From: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
Date: Thu, 13 Feb 2014 17:07:38 +0000
Cc: xen-devel@xxxxxxxxxxxxx
Delivery-date: Thu, 13 Feb 2014 17:09:14 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

On Thu, 2014-02-13 at 16:56 +0000, Simon Martin wrote:
> I can't understand this as disk activity should be running on cores 0,
> 1  and 2, but never on core 3. The only thing running on core 3 should
> by my paravirtual machine and the hypervisor stub.
> 
> Any idea what's going on?

Is core 3 actual a hyperthread -- IOW it is sharing processor execution
resources with e.g. core 2. Or shared L2 caches etc.

Ian.


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