netdev - Re: TCP stalls with 802.3ad + bridge + kvm guest

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Message-Id: <20120804224511.GU17572@p12n.org>
Date:	Sat, 4 Aug 2012 17:45:11 -0500
From:	Peter Samuelson <psamuelson@...lder.net>
To:	Jesse Brandeburg <jesse.brandeburg@...il.com>
Cc:	Jay Vosburgh <fubar@...ibm.com>, netdev@...r.kernel.org,
	jgoerzen@...lder.net
Subject: Re: TCP stalls with 802.3ad + bridge + kvm guest


> [Jesse Brandeburg]
> > try
> > # ethtool -K ethx tso off gso off lro off

Specifically, 'lro off' is the trick.  The others don't have a
noticeable effect.  Now I can get 70 MB/s or better most of the time,
in either direction.

Thanks again,
Peter
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