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RE: [Xen-users] Slow outgoing IP traffic with PV drivers

To: "Peter Privat" <peter.privat@xxxxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] Slow outgoing IP traffic with PV drivers
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Sun, 1 Mar 2009 15:56:25 +1100
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Thread-topic: [Xen-users] Slow outgoing IP traffic with PV drivers
> Hi,
> I'm running Ubuntu 8.04 XEN with latest kernel as a dom0. I'm running
> Windows 2003 SP1 as domU, where I also have installed the 0.9.11 PV
> Drivers. Everything works fine except for the outgoing IP traffic from
> domU, which seems to be limited to a maximum of around 0.5 mbit. The
> incoming IP traffic works fine. No limitations. If I start the dumU
> without the PV drivers activated, the outgoing IP traffic is working
> normal. What am I doing wrong here?

Where is your IP traffic going? (to Dom0, to another DomU, or to a
physical network adapter)

If a physical network adapter, what sort?

I'd start by turning off the available offloads in the advanced
properties of the gplpv xennet adapter.


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