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

To: Marc Patino Gómez <mpatino@xxxxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] PV drivers to improve performance
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Thu, 4 Oct 2007 10:14:09 +1000
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Thread-topic: [Xen-users] PV drivers to improve performance
> 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).


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