Re: [Xen-users] VCPU number configuration

[Mark Williamson <mark.williamson@xxxxxxxxxxxx>]

> <br />> as when I installed the XenU I initialized the VCPU=1, is it
> <br />> possible to change VCPU=2
> <br />
> <br />No, not without restarting the guest from scratch. Whilst it's
> possible <br />to REDUCE the processor count, you can't increase it after
> it's been <br />started [actually, the technicality of it is that there's a
> MAX_CPU <br />count in the domain config parameters, which is hidden from
> the config <br />files at present, but that is the number of VCPU's
> "reserved" when the <br />domain is set up, and with a normal config file,
> you get MAX_VCPUS=VCPUS <br />at the domain creation].
> <br />
> <br />--
> <br />Mats
> <br />
> <br />
> <br />
> So if I want to get a guest with 2 VCPUs, I must install a new one? no
> other ways?

Just change the config file, shut down the guest and then start it again.

As long as the guest has an SMP-capable kernel, it should pick up the extra 
VCPUs straight away.

Cheers,
Mark

-- 
Dave: Just a question. What use is a unicyle with no seat?  And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!

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