netdev - Re: Why is LRO off by default on ixgbe?

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Date:	Wed, 23 Sep 2009 09:53:56 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	Ben Greear <greearb@...delatech.com>
Cc:	NetDev <netdev@...r.kernel.org>
Subject: Re: Why is LRO off by default on ixgbe?

On Wed, 23 Sep 2009 09:29:59 -0700
Ben Greear <greearb@...delatech.com> wrote:

> I just noticed that enabling LRO on ixgbe lets me reach about 9Gbps receive on two
> NICs concurrently in an NFS test, where I was only getting about 6Gbps w/out it (1500 MTU).
> 
> Why is LRO disabled by default?
> 
> Thanks,
> Ben

LRO is turned off if bridging or routing because of End to End requirements.
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