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Re: [aqm] [Bloat] TCP BBR paper is now generally available

Eric Dumazet <eric.dumazet@gmail.com> Sat, 03 December 2016 23:02 UTC

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From: Eric Dumazet <eric.dumazet@gmail.com>
To: "Steinar H. Gunderson" <sgunderson@bigfoot.com>
Date: Sat, 03 Dec 2016 15:02:41 -0800
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Cc: Jonathan Morton <chromatix99@gmail.com>, Neal Cardwell <ncardwell@google.com>, "aqm@ietf.org" <aqm@ietf.org>, bloat <bloat@lists.bufferbloat.net>
Subject: Re: [aqm] [Bloat] TCP BBR paper is now generally available
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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.

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