Re: [Xen-users] CPU Usage

[Antti Kanes <antti.kanes@xxxxxxxxxxxxx>]

Have you checked that you've got the ACPI Multiprocessor driver in use in 
Windows?

In Device Manager, under the Computer node you should have 'ACPI Multiprocessor 
PC'. If instead you're seeing 'Uniprocessor PC' or similar, just update the 
driver and select the multiprocessor one instead. 

GPLPV is not needed for this, but I'd really recommend installing them for 
anywhere decent I/O performance.

Jonathan Tripathy kirjoitti May 29, 2011 kello 12:33 PM:

> 
>> > Also, I upgraded on of my Windows VMs to 2 vCPU, however windows still
>> 
>> > reports just 1. Is this because I need to install the GPLPV drivers?
>> 
>> 
>> If it's Windows 7:
>> 
>> http://answers.microsoft.com/en-us/windows/forum/windows_7-hardware/howto-get-windows-7-to-detect-your-new-multi-core/71519d51-f6cb-47df-b3ff-66c2928d6de4
>> 
>> 
>> otherwise I would check ACPI settings.
>> 
>> 
> It's Windows server 2003 32-bit. I haven't installed any GPLPV drivers 
> (Should I?)
> 
> I checked in device manager on the DomU and it indeed shows the 2 CPU cores:
> "Intel Xeon CPU"
> "Intel Xeon CPU"
> 
> (I've ommited the model and speed just to keep it simple)
> 
> However the task manager only shows one graph
> 
> Any Ideas?
> 
> Thanks
> 
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