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xen-users
RE: [Xen-users] Win2k3 GPLPV Network issue (2)
>
> Sorry for the previous unfinished E-mail. I managed to send it already
> using a weird Gmail key combination...
>
> Hi. I am running Windows 2003 Server with James' excellent GPLPV
> drivers. They significantly boosted the network throughput (I get
> around 600 Mbit using iperf).
> However, I am having some trouble with the ethernet. We are using an
> accounting application that uses Samba shares to store it's (database)
> data. It is very poorly written, and since I moved from a physical
> Win2k machine to a Xen-based Win2k3 machine, it keeps crashing. I
> thought that it was just due the poor quality of the software, but
> since I have started using Bacula for the backups, I suspect the
> network drivers. Bacula fails almost every backup job (Connection
> reset by peer) to the two Win2k3 machines running on the same Xen
> server. It has no problems backing up other (physical) machines.
>
> I tested the packet loss using Iperf UDP tests, and as soon as I
> increase the bandwidth, I get packet loss values up to 39%.
Can you tell me the bandwidth figures you were testing with?
>
> I also run a paravirtual Linux guest on this same Xen server that
> doesn't suffer from this packet loss.
>
> Is there something I can do?
Try turning off checksum and large send offloading as a first thing to
try.
James
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