Processor Utilization

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morriz1 - 30 Sep 2004 14:53 GMT

I have 4 virtual PC's running and when i test an applicaiton on all 4 at the
same time all 4 virtual PC's Processor Utilization is maxed out but the Host
machine Utilization never goes above 25-27 percent. Is there a way to
dedicate more of the processor to my virtual machines?

Thanks

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Scott Baker - 30 Sep 2004 14:57 GMT

No. Virtual PC only uses one processor for all VMs. Some I/O tasks can
be offloaded to another processor.

Scott

> I have 4 virtual PC's running and when i test an applicaiton on all 4
> at the same time all 4 virtual PC's Processor Utilization is maxed
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>
> Thanks

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morriz1 - 30 Sep 2004 15:27 GMT

Thank you for you quick reply. Could you point me in the right direction as
far as what I/O task can be offloaded? Or where i can find some information
on this subject i cant seem to find a lot on microsofts website.

Thanks

> No. Virtual PC only uses one processor for all VMs. Some I/O tasks can
> be offloaded to another processor.
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> >
> > Thanks

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Robert Comer - 30 Sep 2004 15:39 GMT

Do you have a multi processor host PC? (Just making sure) There are a few
general recommendations that can help in VPC VM performance, but nothing
settable that can help use more than 1 processor on the host.

If you really need multiprocessor capability, Virtual Server 2005 will be
able to handle that.

- Bob Comer

> Thank you for you quick reply. Could you point me in the right direction
> as
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>> >
>> > Thanks

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morriz1 - 30 Sep 2004 16:25 GMT

Yes i have a Multi Processor host machine 2 3.2GHz Xeon processors.

> Do you have a multi processor host PC? (Just making sure) There are a few
> general recommendations that can help in VPC VM performance, but nothing
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> >> >
> >> > Thanks

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Scott Baker - 30 Sep 2004 16:33 GMT

And with HyperThreading enabled that makes it look like 4
processors. This gives you the 25% Host utilization you
are seeing. VPC uses 1 processor out of 4.

For general performance tips, check out the VPC FAQ:
http://www.robertmoir.co.uk/win/VirtualPC2004FAQ.html

Scott

>-----Original Message-----
>Yes i have a Multi Processor host machine 2 3.2GHz Xeon processors.
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>.

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Scott Baker - 30 Sep 2004 15:53 GMT

It's all handled automatically. There is absolutely
nothing you can configure within VPC.

Scott

>-----Original Message-----
>Thank you for you quick reply. Could you point me in the right direction as
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