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RE: [Xen-users] Slow Network Performance on GPLPV 9.12-pre13

To: "Mark Pace" <pace@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] Slow Network Performance on GPLPV 9.12-pre13
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Sat, 18 Apr 2009 10:59:36 +1000
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Thread-topic: [Xen-users] Slow Network Performance on GPLPV 9.12-pre13
>       Just turn off checksum offload and large send offload in the DomU
>       (advanced properties of network adapter). See if that makes a
>       difference.
> That did the trick.  Does that mean that something is up with my host not
> supporting TCP offload correctly or something is not set right on it?

I think that quite a few Linux network drivers don't support offload correctly 
once you start using bridging or anything other than a plain 'ethX' interface.

Don't rule out a problem with the GPLPV drivers though... it's possible I'm 
doing something incorrectly that some drivers can tolerate and some can't. I 
can't think what though.

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