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Re: [Xen-users] NIC Offloading Confusion

To: Robert Dunkley <Robert@xxxxxxxxx>
Subject: Re: [Xen-users] NIC Offloading Confusion
From: Pasi Kärkkäinen <pasik@xxxxxx>
Date: Sat, 25 Apr 2009 14:44:48 +0300
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On Fri, Apr 24, 2009 at 11:41:46AM +0100, Robert Dunkley wrote:
> I have been using the built in Xen Paravirt NIC drivers for paravirt
> networking and had bad performance until I disabled all offload setting
> on the bridge and paravirt nic (From Dom0).
> There are 2 related questions I have, where should I be tweaking the
> offload settings, the Dom0 Physical NIC, The Bridge or the DomU NIC?
> Which settings in particular tend to cause trouble? (I just disabled all
> of them because this was a server that is in use that I converted to
> paravirt dirvers)
> Does anyone have any Ethtool -K recommendations for a Xen,
> Redhat/Centos, Intel PCI-Express and Intel Legacy PCI drivers?

I can't remember having to disable any offloading settings for ages.. 

Running RHEL5.x or CentOS5.x on both dom0 and (PV) domU.

-- Pasi

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