From mboxrd@z Thu Jan  1 00:00:00 1970
From: davem@davemloft.net (David Miller)
Date: Wed, 20 Nov 2013 13:52:21 -0500 (EST)
Subject: [BUG,REGRESSION?] 3.11.6+,3.12: GbE iface rate drops to few KB/s
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From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Wed, 20 Nov 2013 09:30:07 -0800

> max (128KB , 1-2 ms) of buffering per flow should be enough to reach
> line rate, even for a single flow, but this means the sk_sndbuf value
> for the socket must take into account the pipe size _plus_ 1ms of
> buffering.

And we can implement this using the estimated pacing rate.