Re: [Xen-devel] vif interface dropping 80% packets

["Reese Faucette" <reese@xxxxxxxx>]

> > update:
> > The performance is better with 9k MTU, as expected:
> > TCP_STREAM and TCP_SENDFILE both get ~1.8Gb/s, xentop reports 87%
> > utilization for dom0, so I guess that's about all I can expect without
> > code changes.
> I've seen rather better figures than this with another 10G card.
> Does your NIC/driver support TSO and LRO?
yes to both, and have tried with LRO both enabled and disabled.  again, the 
dom0 performance is fine, it's just to domU that is slower.  I have network 
bridging set up on this interface, i.e. peth2, eth2, xenbr2, etc. - is that 
not the way I should be doing it?
> > 2) if yes, Will the patch "fedora-36252.patch" work on the 2.6.16
> > kernel included with 3.0.4, or have conflicts crept in?
> No idea. What does the patch do?
This was the mythical patch to make 2.6.18 into a Xen-aware kernel.  Took me 
forever to track it down - is there a more obvious place to look?  Sorry to 
just refer to the file by name, after googling forever i decided i was the 
only person in the Xen world not intimately familiar with this patch.
-reese



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