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Re: [Xen-users] Xen Not Support multi-cpu??

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Xen Not Support multi-cpu??
From: Xin Chen <xcheney@xxxxxxxxxxxxxx>
Date: Tue, 13 Mar 2007 12:03:55 +1100
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Hi Mark,

thanks for your quick reply!!!

by the way,

It's normal to run dom0 as a UP guest though

what is UP guest ? how to do that??

sorry about my stupid..

thanks:)

xin


Mark Williamson wrote:

Hi,

That info is out of date, Xen ha supported SMP guests throughout the 3.x series, so it should work fine for you.

It's normal to run dom0 as a UP guest though, since this is often only used for IO. Dedicating a core or hyperthread to it can improve performance.

Cheers,
Mark

On Tuesday 13 March 2007 00:44, Xin Chen wrote:
Hi ,

I just saw this from xen wiki-faq.


   4.3. When I boot vmlinuz-xen0, why doesn't it detect my second CPU?

You may expect the initial Linux instance to detect all your CPUs, but
this is never the case. Your secondary CPUs will have been detected by
Xen, but we do not currently support multi-CPU virtual machines, so
vmlinuz-xen0 can only see one CPU. Of course, you can create extra VMs
and run them on your other CPUs. Support for multi-processor VMs is in
the pipeline.


does that mean xen doesn't support 2 cpus??

man..

thanks in advance!
xin

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