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Give more CPU to a Guest OS

Source: microsoft.public.virtualserver
Sent: 07/10/2008
From: Jeff
Message:

Hello,

I am running Hyper V RTM and am having an issue with one of my Guest OS's.
This machine is very CPU intensive and is basically maxing the CPU in the
Guest OS, but the host OS CPU is barely being touched. I have assigned 2
CPU's to the box but it looks as if the app isn't written to properly take
advantage of it. I have assigned a weight of 1000 (Every other machine is at
the default 100) but this doesnt seem to have done any good. There must be a
way to give this more of the systems CPU when its available. How do I do this?

Thanks

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Related Messages

Re: Give more CPU to a Guest OS

Sent: 07/10/2008
From: Steve Jain <(email address - cut out)>
Message:

On Thu, 10 Jul 2008 16:03:00 -0700, Jeff
<(email address - cut out)> wrote:

How much memory does the VM have? IIRC, too little memory in a VM
will cause the VM's CPU usage to spike while the host's does not.

--
Cheers,
Steve Jain, Virtual Machine MVP
http://vpc.essjae.com/
I do not work for Microsoft.

Show quoted text

>Hello,
>
>I am running Hyper V RTM and am having an issue with one of my Guest OS's.
>This machine is very CPU intensive and is basically maxing the CPU in the
>Guest OS, but the host OS CPU is barely being touched. I have assigned 2
>CPU's to the box but it looks as if the app isn't written to properly take
>advantage of it. I have assigned a weight of 1000 (Every other machine is at
>the default 100) but this doesnt seem to have done any good. There must be a
>way to give this more of the systems CPU when its available. How do I do this?
>
>Thanks

Re: Give more CPU to a Guest OS

Sent: 07/10/2008
From: Jeff
Message:

I have 1gb alotted, and its only using about 400mb of that.

"Steve Jain" wrote:

Show quoted text

> On Thu, 10 Jul 2008 16:03:00 -0700, Jeff
> <(email address - cut out)> wrote:
>
> >Hello,
> >
> >I am running Hyper V RTM and am having an issue with one of my Guest OS's.
> >This machine is very CPU intensive and is basically maxing the CPU in the
> >Guest OS, but the host OS CPU is barely being touched. I have assigned 2
> >CPU's to the box but it looks as if the app isn't written to properly take
> >advantage of it. I have assigned a weight of 1000 (Every other machine is at
> >the default 100) but this doesnt seem to have done any good. There must be a
> >way to give this more of the systems CPU when its available. How do I do this?
> >
> >Thanks
>
> How much memory does the VM have? IIRC, too little memory in a VM
> will cause the VM's CPU usage to spike while the host's does not.
>
> --
> Cheers,
> Steve Jain, Virtual Machine MVP
> http://vpc.essjae.com/
> I do not work for Microsoft.
>

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