Re: [Xen-users] Very bad network performance between domU and dom0

[Klaus Schmidinger <Klaus.Schmidinger@xxxxxxxxxx>]

JHJE (Jan Holst Jensen) wrote:
>> The best solution is to use the para-virtual drivers - these 
>> should (in theory at least) give you about the same performance as the
> 
>> para-virtual kernel does on Xen, because it's using the same method. 
>>
>> For linux-2.6, those are available in <xen source
>> directory>/unmodified_drivers. The README file in that directoy tells
>> you how to build these drivers. It's easiest if you do this ON the
>> target-system. 
>>
>> There are drivers for Windows as well, but those are not available in
>> source-form, but I believe XenExpress contains drivers for Windows if
>> you want to get those. 
> 
> I can confirm that XenExpress contains those. The network driver reduced
> ping response time on a HV Win2003 Server VM from 7-8 ms to less than 1
> ms, so it gives a huge performance boost.
> 
> Cheers
> -- Jan Holst Jensen, Novo Nordisk A/S, Denmark

Can you give me some hints on how to get that driver out of
XenExpress and into an installed Windows XP virtual machine?
I wouldn't want to do a complete installation of XenExpress onto
my virtual Windows machine.

Klaus

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