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To: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [Bloat] Time in Queue, bufferbloat, and... our accidentally  interplanetary network
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Date: Wed, 07 Dec 2011 11:15:38 +0100
From: Hagen Paul Pfeifer <hagen@jauu.net>
Cc: Dave Taht <dave.taht@gmail.com>,
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On Mon, 05 Dec 2011 11:59:34 +0100, Eric Dumazet wrote:





> Adding a time limit is possible, all we need is a proper design and

> implementation :)

> 

> Here is my suggestion :

> 

> Design a new tfifo/tred qdisc, with following properties :

> 

> Adaptative RED, (ECN enabled + head drop), but instead of using

> bytes/packet qlen average, use time_in_queue average.



Question one: is anything wrong with sfb or choke as the basis, instead of

RED?



Question two: I submitted pfast_head_drop to drop more outdated data

instead of new data. Back in time I thought TCP _may_ experience benefits

because more up-to-date SACK data packets are saved. Are there any other

TCP advantages with head drop policy?



Hagen