Re: [Xen-users] Average Disk Queue Lenghts Astronomically High for Win2003 Guest

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Thu, Mar 26, 2009 at 09:35:54AM -0700, Robinson, Eric wrote:
> We have 3 Windows 2003 terminal servers, 2 physical and 1 virtualized.
> The physical servers run with Average Disk Queue Lengths < 2/spindle,
> which is normal. The virtualized server shows Average Disk Queue Length
> of 2000-4000 with the same number of users (and using the same scale).
> Even though the disk queue lengths are ridiculously high, users
> experience normal performance, so I think it must be something about the
> way PerfMon works on a Windows guest. Does anyone have an idea what
> accounts for this? 
> 

How do you measure active/current disk queue lenghts? 

-- Pasi

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