On Thu, May 07, 2009 at 09:13:42PM -0700, Robinson, Eric wrote:
>
> I'm using Qemu emulated drivers. I am under the impression that
> paravirtualized drivers are not an option for Windows guests.
>
You should try Windows Xen GPLPV drivers. They'll have a lot better performance
than the
Qemu emulated devices.
And please don't top-post..
-- Pasi
> --
> Eric Robinson
>
>
>
> -----Original Message-----
> From: Pasi Kärkkäinen [mailto:pasik@xxxxxx]
> Sent: Thursday, May 07, 2009 2:56 AM
> To: Robinson, Eric
> Cc: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] Windows Performance Monitor on a Win2003R2 DomU
>
> On Wed, May 06, 2009 at 01:50:30PM -0700, Robinson, Eric wrote:
> > I have 3 Windows terminal servers. The two physical servers have
> > average disk queue lengths around 1-2, which is normal for a RAID 1
> > server. The third Windows terminal server is a Xen DomU. When I run
> > perfmon on it, average disk queue lengths are 20,000+. What the heck
> > accounts for the difference? That number has to be spurious. There's
> > no way the disk queue could really be that high.
> >
>
> Are you using Qemu emulated disk devices/drivers (default), or optimized
> (paravirtualized) drivers?
>
> -- Pasi
>
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