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From: Aaron Wood <woody77@gmail.com>
To: bloat <bloat@lists.bufferbloat.net>
Subject: Re: [Bloat] [aqm] DOCSIS 3.1 support for AQM
Date: Thu, 31 Oct 2013 14:23:45 +0100	[thread overview]
Message-ID: <CALQXh-NBWoeCOt_CS65c3NKM3p_cs19a+BjBUi+qzb2j8UF7=w@mail.gmail.com> (raw)
In-Reply-To: <527213F5.6060406@kit.edu>

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> Thanks for the information. I'd be interested in why you have chosen
> PIE, e.g., instead of sfq-CoDel. Any pointers to evaluation
> reports/results? Last time I saw a presentation on this it seemed
> that CoDel was performing quite well.
>

I think this cablelabs report makes the argument for PIE:

http://www.cablelabs.com/downloads/pubs/Active_Queue_Management_Algorithms_DOCSIS_3_0.pdf

Mostly in that in the heavy traffic scenarios, PIE outperforms sfq_codel,
and in general is a tad bit better than codel, with a simpler
implementation (I think).  Although I think I take issue with the "heavy
traffic" model, but I'm guessing (hoping) that it's based on surveys of
customer traffic.  60-110 upstream flows seems like a lot.  But it's based
around a heavy use of BitTorrent, so maybe that's reasonable for some
people.

But in all other cases, sfq really blows the doors off of the others.

-Aaron

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  reply	other threads:[~2013-10-31 13:23 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-30 20:13 [Bloat] " Greg White
2013-10-31  8:25 ` [Bloat] [aqm] " Bless, Roland (TM)
2013-10-31 13:23   ` Aaron Wood [this message]
2013-10-31 14:32     ` Michael Richardson
2013-11-04 23:20     ` Greg White

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