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From: Jonathan Morton <chromatix99@gmail.com>
To: codel@lists.bufferbloat.net
Subject: Re: [Codel] The next slice of cake
Date: Wed, 18 Mar 2015 17:20:05 +0200	[thread overview]
Message-ID: <491C7497-BE3E-452B-A797-C7FC1102E7ED@gmail.com> (raw)
In-Reply-To: <5509957B.30600@pollere.com>


> On 18 Mar, 2015, at 17:10, Kathleen Nichols <nichols@pollere.com> wrote:
> 
> How are you relating target delay to bandwidth?

Essentially, I use 5ms as a minimum, and increase it if necessary to accommodate a couple of MTU-sized packets at the shaping rate.  This keeps things nicely under control at low bandwidths, and I find that cake remains useful and usable even at 64Kbps (without making even the usual adjustments to host or link configuration for such low speeds).

I can do this in cake because the shaping rate is known, whereas the pure codel and fq_codel qdiscs do not have reliable link-speed information.

- Jonathan Morton


  reply	other threads:[~2015-03-18 15:20 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-17 20:08 Jonathan Morton
2015-03-18  7:22 ` Sebastian Moeller
2015-03-18  8:41   ` Jonathan Morton
2015-03-18 10:39     ` Sebastian Moeller
2015-03-18 15:10 ` Kathleen Nichols
2015-03-18 15:20   ` Jonathan Morton [this message]
2015-03-18 21:20     ` Dave Taht
2015-03-21 16:09       ` Dave Taht
2015-03-21 23:55         ` Jonathan Morton
2015-03-22  9:39         ` Sebastian Moeller
2015-03-22 10:43           ` Jonathan Morton
2015-03-22 12:51             ` Sebastian Moeller
2015-03-22 15:29               ` Jonathan Morton
2015-03-30 17:28               ` Jonathan Morton
2015-03-30 18:23                 ` Sebastian Moeller
2015-03-31  3:22                   ` Jonathan Morton
2015-03-31  7:12                     ` Sebastian Moeller
2015-03-31 12:47                       ` Jonathan Morton
2015-03-30 19:28                 ` Dave Taht
2015-04-02  4:48                   ` Jonathan Morton
2015-04-02  5:17                     ` Dave Taht
2015-04-02  5:19                       ` Dave Taht

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