RE: [Xen-users] Adding more vCPUs to Windows 2003 standard, from 2 to 4

["James Harper" <james.harper@xxxxxxxxxxxxxxxx>]

> "James Harper" <james.harper@xxxxxxxxxxxxxxxx> wrote on 06.08.2008
> 09:29:44:
> 
> > > Any help/tips/tricks how can i add more vCPUs to my windows 2003
> > standard
> > > servers?
> > >
> >
> > Is your Windows 2003 licensed for more than 2 CPU's?
> >
> > Does 'xm list' say that 4 CPU's are allocated?
> >
> > James
> 
> I though standard version supports 4 processors?

Yes, you are correct. It is Web Edition that supports only 2.

> 
> xm list says 2 VCPUs is on use.

Just recently I set up a Windows 2003 DomU (I think it was enterprise
though) under 4 CPU's, and while booting 'xm list' showed an increasing
number of vcpu's attached until it reached 4.

When you go from UP to SMP, the first time you boot you get a message
that windows had finished installing your hardware but you need to
reboot, and sure enough you only have one CPU until you reboot. I have
not had such a problem going from 2 processors to 4 though.

What version of Xen are you using? Do you have ACPI and APIC enabled?

James

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