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xen-users
Re: [Xen-users] GPLPV drivers block when copying huge files
James Harper wrote:
> > > It could also be related to gso or csum offload... do things change if
> > > you disable either of those?
> >
> > "Checksum Offload" is currently enabled, we'll test disabling it.
> > Is GSO the same as "Large Send Offload"? If so, we can test it as well.
>
> Yes, please disable Large Send Offload and let me know if the problem
> persists.
Good news: Disabling "Large Send Offload" fixes the problem.
How does enabled LSO in the GPLPV driver interact with the LSO implemented by
the NIC driver in Linux? The mentioned problem could be reproduced on three
machines with Broadcom NICs (BCM5708 and BCM715), but wasn't triggered on a
system with an onboard Nvidia (MCP51).
Cheers,
Moritz
--
Moritz Muehlenhoff muehlenhoff@xxxxxxxxxxxxx fon: +49 421 22 232- 0
Development Linux for Your Business fax: +49 421 22 232-99
Univention GmbH http://www.univention.de/ mobil: +49 175 22 999 23
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