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Old 10-28-2008   #3 (permalink)
Marvin256


 
 

Re: Hyper-V CPU performance

Hello Steffen

Thank you for your answer.
This is not very clear to me... Where can I see the CPU utilization of my
physical server?
This doesn't make any sense to me.
Yes the physical server is a Quad CPU.

Regards


"Steffen Hoppe" wrote:
Quote:

> Hallo Marvin256,
>
> the reason for this is the new virtualization architecture introduced with
> Hyper-V.
>
> The host (parent) is nothing more than another virtual machine with it's
> own resources (see the nice image on http://www.microsoft.com/windowsserv...-features.aspx).
> If your host is not "working" the task-manager will not show any CPU utilization,
> even if your VMs are using up all their CPU time. If you want to see the
> actual utilization you were correct to look into the Hyper-V console.
>
> I assume that - as you are using a 4-core CPU - your virtual machine is set
> up as a single processor machine? This is why you are actually using only
> 100/4 = 25% of your CPU capacity.
>
> Cheers,
> Steffen
>
> mailto:s.hoppe@xxxxxx-soft.de
>
Quote:

> > Hello
> >
> > I have a Hyper-V server working great but there is a strange behavior
> > regarding the CPU utilisation.
> >
> > We have a software on one of the virtualized server that consumes a
> > lot of
> > CPU (video encoding). When this software is working, the cpu on the
> > guest
> > virtualized server goes up to 100%.
> > This is normal on my point of view.
> > BUT, I don't understand why:
> >
> > 1. Hyper-V reports that this virtualized server use 24% CPU in the
> > hyper-V
> > MMC instead of 100%
> > 2. The host server use only 1% of its CPU capacity.
> > See this screenshot for a better understanding:
> > http://www.serial-skier.com/hyper-v.png
> >
> > My question is: What the hell? I thought that Hyper-v was a best
> > choice for merformance! I think I didn't set something somewhere but
> > what?
> >
> > Thank you for your help
> >
>
>
>
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