From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: TSQ accounting skb->truesize degrades throughput for large
 packets
Date: Fri, 06 Sep 2013 10:00:40 -0700
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Cc: Wei Liu <wei.liu2@citrix.com>,
	Jonathan Davies <Jonathan.Davies@eu.citrix.com>,
	Ian Campbell <ian.campbell@citrix.com>, netdev@vger.kernel.org,
	xen-devel@lists.xenproject.org
To: Zoltan Kiss <zoltan.kiss@citrix.com>
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On Fri, 2013-09-06 at 17:36 +0100, Zoltan Kiss wrote:

> So I guess it would be good to revisit the default value of this 
> setting.

If ixgbe requires 3 TSO packets in TX ring to get line rate, you also
can tweak dev->gso_max_size from 65535 to 64000.