At 12:27 yesterday, Alex Malinovich wrote:

> I recently set up a couple of bridges to use with Xen virtualized
> machines and we're experiencing some terrible performance in certain
> cases.

This sounds like the classic Xen problem with TCP segment offloading -- you 
may need to run "ethtool -K eth0 tso off" on every Xen domain.  I consider 
this to be a long-standing Xen bug.

-- 
Malcolm Scott
Research Assistant
University of Cambridge Computer Laboratory

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