Re: [Xen-users] IO wait on windows servers?

["Nick Couchman" <Nick.Couchman@xxxxxxxxx>]

In PerfMon, look at the PhysicalDisk objects and find the metrics for Current 
Disk Queue Length and Average Disk Queue Length - these can give you data on 
how many I/O operations are waiting for the disk, which should give you similar 
information.  It isn't exactly the same as I/O Wait in Linux, since I/O Wait is 
actually the time the processor spends waiting on I/O, but overly high disk 
queue lengths in Windows indicate similar problems to overly high I/O Waits in 
Linux.

-Nick

>>> On 2010/07/14 at 02:53, "Matthew Law" <matt@xxxxxxxxxxxxxxxxxx> wrote: 

> I'm not a windows person, so I am hoping someone can help me with this...
> 
> I've just installed a Windows 2003 Server VM and I would like to make sure
> that the average disk IO wait is acceptable.  In Linux and other *nixes I
> would normally use sar or iostat for this.  I have found perfmon in
> windows.  Will this give me the numbers I need?
> 
> Thanks,
> 
> Matt.




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