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Re: [Xen-users] PV drivers to improve performance

To: James Harper <james.harper@xxxxxxxxxxxxxxxx>
Subject: Re: [Xen-users] PV drivers to improve performance
From: Pasi Kärkkäinen <pasik@xxxxxx>
Date: Thu, 4 Oct 2007 10:03:01 +0300
Cc: Marc Patino Gómez <mpatino@xxxxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
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On Thu, Oct 04, 2007 at 10:14:09AM +1000, James Harper wrote:
> > 
> > Hi folks,
> > 
> > I know that exist PV drivers for Windows on Xensource products, and
> > these drivers improve the disk and network performance of HVM windows
> > guests. Anybody knows how much?
> > 
> How much performance improvement or how much cost?
> The PV drivers for xensource only appear to work on xensource products, not 
> with the open sourced version of Xen.
> I'm attempting to write some PV drivers for Windows which will be open 
> sourced (GPL). I'm struggling to find the 
> time just lately but am making reasonable progress... I have a PCI driver 
> which creates a windows bus, and the
> beginnings of a XenStore driver that attaches to it. At some point soon I 
> hope to be able to get a 'clean shutdown'
> working (eg 'xm shutdown' will actually shut down a windows machine instead 
> of pulling the plug on it).
> James


Great news!

Are your drivers already available? I think many people would like to see
the source and possibly help..

-- Pasi

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