Re: [Xen-users] CPU Usage

Bart Coninckx
Sun, 29 May 2011 10:38:06 -0000

On 05/29/11 12:32, Jonathan Tripathy wrote:
>
> On 29/05/2011 11:31, Bart Coninckx wrote:
>> On 05/29/11 11:33, Jonathan Tripathy wrote:
>>>
>>>> > 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
>>
>> If you disable "One graph per CPU" in the view options, you
only see
>> one graph, even with two cores.
>>
>> B.
>>
> Can you tell I''m a Linux guy?? :)
>
> Thanks Bart for your help
>
> BTW, does GPLPV increase disk performance by much?
>
> Thanks

I am too, unfortunately you bump into these all the time.

I remember seeing a distinct raise in performance for the disks after
installing the drivers. I install them anyway, just for the Shutdown
Monitor. Doesn''t hurt, though some get problems after.

If you really want to be sure, there are commercial drivers available as
well by for instance Novell.


B.