General list for discussing Bufferbloat
 help / color / mirror / Atom feed
From: Greg White <g.white@CableLabs.com>
To: Aaron Wood <woody77@gmail.com>,
	bloat <bloat@lists.bufferbloat.net>,
	"aqm@ietf.org" <aqm@ietf.org>
Subject: Re: [Bloat] [aqm] DOCSIS 3.1 support for AQM
Date: Mon, 4 Nov 2013 23:20:46 +0000	[thread overview]
Message-ID: <CE9D7773.2152C%g.white@cablelabs.com> (raw)
In-Reply-To: <CALQXh-NBWoeCOt_CS65c3NKM3p_cs19a+BjBUi+qzb2j8UF7=w@mail.gmail.com>

[-- Attachment #1: Type: text/plain, Size: 1511 bytes --]

Rong will cover this at a high-level during the IETF AQM session tomorrow.  Her slides are posted:

?www.ietf.org/proceedings/88/slides/slides-88-aqm-1.pdf<http://www.ietf.org/proceedings/88/slides/slides-88-aqm-1.pdf>

I plan to do a follow-up to the paper you linked to below to give some of the details.  Should be ready before IETF89.

-Greg

From: Aaron Wood <woody77@gmail.com<mailto:woody77@gmail.com>>
Date: Thursday, October 31, 2013 at 7:23 AM
To: bloat <bloat@lists.bufferbloat.net<mailto:bloat@lists.bufferbloat.net>>
Subject: Re: [Bloat] [aqm] DOCSIS 3.1 support for AQM


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

[-- Attachment #2: Type: text/html, Size: 3076 bytes --]

      parent reply	other threads:[~2013-11-04 23:20 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
2013-10-31 14:32     ` Michael Richardson
2013-11-04 23:20     ` Greg White [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

  List information: https://lists.bufferbloat.net/postorius/lists/bloat.lists.bufferbloat.net/

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CE9D7773.2152C%g.white@cablelabs.com \
    --to=g.white@cablelabs.com \
    --cc=aqm@ietf.org \
    --cc=bloat@lists.bufferbloat.net \
    --cc=woody77@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox