From: Stephen Hemminger <shemminger@vyatta.com>
To: Peter Samuelson <psamuelson@efolder.net>
Cc: Jesse Brandeburg <jesse.brandeburg@gmail.com>,
Jay Vosburgh <fubar@us.ibm.com>,
netdev@vger.kernel.org, jgoerzen@efolder.net
Subject: Re: TCP stalls with 802.3ad + bridge + kvm guest
Date: Sat, 11 Aug 2012 11:28:40 -0700 [thread overview]
Message-ID: <20120811112840.0dc9ba71@nehalam.linuxnetplumber.net> (raw)
In-Reply-To: <20120804224511.GU17572@p12n.org>
On Sat, 4 Aug 2012 17:45:11 -0500
Peter Samuelson <psamuelson@efolder.net> wrote:
>
> > [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
When device is added to bridge, the bridge code does ask the device
to turn LRO off (automatically). Unfortunately some device drivers are
broken.
prev parent reply other threads:[~2012-08-11 18:28 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-27 18:38 TCP stalls with 802.3ad + bridge + kvm guest Peter Samuelson
2012-07-27 20:00 ` Jay Vosburgh
2012-07-31 14:07 ` Peter Samuelson
2012-08-01 14:41 ` Peter Samuelson
2012-08-04 5:04 ` Jesse Brandeburg
2012-08-04 16:22 ` Peter Samuelson
2012-08-04 18:07 ` Sławek Janecki
2012-08-04 19:21 ` Sławek Janecki
2012-08-04 22:45 ` Peter Samuelson
2012-08-11 18:28 ` Stephen Hemminger [this message]
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