From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: Major network performance regression in 3.7
Date: Sat, 05 Jan 2013 17:21:16 -0800
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To: Willy Tarreau <w@1wt.eu>
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On Sun, 2013-01-06 at 01:50 +0100, Willy Tarreau wrote:

> Yes, I've removed all zero counters in this short view for easier
> reading (complete version appended at the end of this email). This
> was after around 140 GB were transferred :

OK I only wanted to make sure skb were not linearized in xmit.

Could you try to disable CONFIG_COMPACTION ?

( This is the other thread mentioning this : "ppoll() stuck on POLLIN
while TCP peer is sending" )