From: Jonathan Morton <chromatix99@gmail.com>
To: Dave Taht <dave.taht@gmail.com>
Cc: "codel@lists.bufferbloat.net" <codel@lists.bufferbloat.net>
Subject: Re: [Codel] The next slice of cake
Date: Sun, 22 Mar 2015 01:55:07 +0200 [thread overview]
Message-ID: <26F8113F-4FF5-4C78-B397-B65C9CB8221E@gmail.com> (raw)
In-Reply-To: <CAA93jw4PZ2ARfbeVhoGJTXodu1qy+q11W-Pug3P5OLd=feTzkg@mail.gmail.com>
> On 21 Mar, 2015, at 18:09, Dave Taht <dave.taht@gmail.com> wrote:
>
> I would like cake to have a byte limit instead.
That can probably be arranged.
> at (say) 2 or 4x the BDP
Hmm, we know the bandwidth, but what’s the delay? It probably makes sense to use the Codel interval parameter for that purpose. Four times that should make a reasonable headroom for most situations, and the drop-from-longest-queue behaviour should deal with excursions beyond that.
> It would be nice for cake (without shaping enabled) to be about to
> automatically sense the actual interface rate and size this outer
> limit appropriately, but I don't think mechanisms exist to do that.
It may be feasible to guess an initial value, and refine it based on the observed throughput when the queue is busy.
- Jonathan Morton
next prev parent reply other threads:[~2015-03-21 23:55 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
2015-03-18 21:20 ` Dave Taht
2015-03-21 16:09 ` Dave Taht
2015-03-21 23:55 ` Jonathan Morton [this message]
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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