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Re: [Xen-users] slow network with gplpv drivers in vlan setup

On 11/02/2010 15:29, James Harper wrote:
Looks pretty the same.
Yes, identical, just like you said they were :)

I'm wondering if you have an idea to fix the problem on the dell
workstation, or maybe how the ethtool -k/-i should looks like in order
to have chance for offloading to work.

No vlan's on the dell? Some offload implementations are just broken, either on 
the firmware or the driver. Some have limitations that the driver doesn't 
understand (eg no offload when a vlan is in use). Just turn off the offload.
I also have vlan on the dell (that's how I witnessed the problem one more time and that I find that scatter/gather help with the transfer speed). Thing is that I have roughly ~6/7MB per second in speed transfer in this case, which is not too bad but for a 1Gbit adapter it well bellow its capacities.
If there are vlan's on the dell then get back to me and I might be able to 
suggest a few things.

Thanks.

Matthieu.

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