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RE: [Xen-users] Disk I/O performance with GPLPV 10.0.142

To: "Nathan O'Sullivan" <nathan@xxxxxxxxxxxxxx>
Subject: RE: [Xen-users] Disk I/O performance with GPLPV 10.0.142
From: "Ian Tobin" <itobin@xxxxxxxxxxxxx>
Date: Thu, 17 Dec 2009 21:47:17 -0000
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Thread-topic: [Xen-users] Disk I/O performance with GPLPV 10.0.142

Oh right, makes sense.


Ill try something else tomorrow, thanks for getting back to me



From: Nathan O'Sullivan [mailto:nathan@xxxxxxxxxxxxxx]
Sent: 17 December 2009 19:44
To: Ian Tobin
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Disk I/O performance with GPLPV 10.0.142


Ian Tobin wrote:

Hi James


Ive setup a windows 2003 guest and thought id do a performance test.


Nework is great, much faster.


When i run nbench and do an i/o test on the disk using a 100mb thread i get much slower performance using the GPLPV drivers than i do when not using them.  Is there a setting that needs to be changed?







The impression I get is that before installing GPLPV, many benchmarks on Windows get "tricked" by some sort of caching effect on the dom0 side. If you try a more realistic test you will probably find that performance is actually better.

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