[Bloat] TCP BBR paper is now generally available

[Eric Dumazet]

On Sat, 2016-12-03 at 14:55 -0800, Eric Dumazet wrote:

> Perfect.
> 
> Note that starting from linux-4.4, e1000e gets gro_flush_timeout that
> would help this precise workload

Also it appears the sender uses a lot of relatively small segments (8220
bytes at a time), with PSH, so GRO wont be able to help.

I wonder how these PSH are forced.