From: Andrew McGregor <andrewmcgr@gmail.com>
To: Dave Taht <dave.taht@gmail.com>
Cc: codel@lists.bufferbloat.net
Subject: Re: [Codel] [RFC PATCH] codel: ecn mark at target
Date: Mon, 6 Aug 2012 12:09:10 -0700 [thread overview]
Message-ID: <441D6067-BC04-4461-BD91-4A988A089866@gmail.com> (raw)
In-Reply-To: <CAA93jw7EbtAbRyjWB4tqWrrpoBi7gziH5V0wp6OoeHY8y2M3mg@mail.gmail.com>
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On 6/08/2012, at 10:50 AM, Dave Taht <dave.taht@gmail.com> wrote:
> This discussion is getting mildly off-track. My intent in posting this patch
> was to prove how wrong the "ecn mark at target" idea was by example,
> and in doing so, shed light on those new to codel, on how the algorithm
> actually works, and to encourage those that didn't grok it, to read and
> run the code in whatever scenarios would help more people to
> grokking in fullness.
>
> I hadn't expected to twiddle a bug!
Well, so drop at target is wrong wrt deployed TCPs. Ok, fine.
So, instead, how about this: mark instead of dropping, but only for the first few iterations around the while loop in dequeue (so that huge backlogs can be drained). The question then is, how many is a few? I suppose that can be answered empirically.
Andrew
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next prev parent reply other threads:[~2012-08-06 19:09 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-04 2:44 Dave Täht
2012-08-04 6:45 ` Eric Dumazet
2012-08-04 21:53 ` Kathleen Nichols
2012-08-05 3:06 ` Andrew McGregor
2012-08-05 5:30 ` Eric Dumazet
2012-08-05 16:53 ` Andrew McGregor
2012-08-05 16:58 ` Kathleen Nichols
2012-08-05 17:14 ` Andrew McGregor
2012-08-05 17:15 ` Eric Dumazet
2012-08-05 16:54 ` Richard Scheffenegger
2012-08-05 17:25 ` Eric Dumazet
2012-08-05 17:35 ` Eric Dumazet
2012-08-05 18:14 ` Yuchung Cheng
2012-08-05 18:40 ` Eric Dumazet
2012-08-05 19:49 ` Eric Dumazet
2012-08-06 16:22 ` Richard Scheffenegger
2012-08-06 16:46 ` Eric Dumazet
2012-08-06 17:50 ` Dave Taht
2012-08-06 19:09 ` Andrew McGregor [this message]
2012-08-06 20:01 ` Eric Dumazet
2012-08-10 17:48 ` Dave Taht
2012-08-04 7:00 ` Roger Jørgensen
2012-08-04 13:38 ` Richard Scheffenegger
2012-08-04 17:21 ` Eric Dumazet
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