Re: [Xen-users] Xen vs VMWare comparison paper

[James Harper <james.harper@xxxxxxxxxxxxxxxx>]

> Hello Admin,
> 
> On Wed, May 23, 2012 at 1:11 PM,  <admin@xxxxxxxxxxx> wrote:
> > I'm guessing that the benchmarks were run without any optimized
> > drivers for Windows under Xen.  That would be the only way to explain
> > the dismal performance.  Windows is known to perform poorly under Xen
> > if you simply install Windows and don't install optimized drives.  In
> > all fairness, Windows performs poorly on native hardware if you don't
> > install optimized drivers, so testers should expect to have to install
> > optimized drivers when testing Windows regardless of the environment.
> > I have emailed them about this, and I will post anything I hear back from
> them.
> 
> I'm rather curious here because you said "optimized drivers" rather than
> saying "GPLPV."  Is there a choice of [better than stock] drivers for a
> Windows HVM DomU that I'm not aware of?  I ask because GPLPV doesn't
> quite work for me yet in all situations.
> 

If they were running the Citrix branded Xen product then Citrix's own drivers 
would be the obvious choice.

In what way is GPLPV letting you down? You asked about USB a while back... I've 
made some progress there but it's still very much a work in progress.

Thanks

James

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