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RE: [Xen-users] Can one VCPU use all physical CPUs in the host

from [Zary Matej]

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To:	xc l <nudtxcl@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "xen-users@xxxxxxxxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject:	RE: [Xen-users] Can one VCPU use all physical CPUs in the host
From:	Zary Matej <matej.zary@xxxxxxxxx>
Date:	Mon, 25 Jul 2011 10:27:31 +0200
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Thread-topic:	[Xen-users] Can one VCPU use all physical CPUs in the host

Hi, it can use just one physical CPU at time. If the VCPU is not pinned on 
particular CPU (CPU core), it can be migrated over various physical CPUs over 
time by Xen. But it cannot "aggregate" performance of more physical CPUs. It 
will utilize 100% of single physical core in the best scenario. :)

Regards

Matej
________________________________________
From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
[xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of xc l [nudtxcl@xxxxxxxxx]
Sent: 25 July 2011 02:35
To: xen-devel@xxxxxxxxxxxxxxxxxxx; xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Can one VCPU use all physical CPUs in the host

Hi all

I have a multi-core physical machine, and I run domain-1 whose VCPU count is 
one, Can this VCPU use all the processors in the host?

Many thanks!



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