From: Michael Welzl <michawe@ifi.uio.no>
To: Dave Taht <dave.taht@gmail.com>
Cc: bloat <bloat@lists.bufferbloat.net>
Subject: Re: [Bloat] when does the CoDel part of fq_codel help in the real world?
Date: Tue, 27 Nov 2018 22:20:58 +0100 [thread overview]
Message-ID: <A5554058-1E2C-406C-961C-F34C7966FE4D@ifi.uio.no> (raw)
In-Reply-To: <EA2C70BB-6DC1-4681-BEDF-32B007AD7B19@ifi.uio.no>
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Just a small clarification:
>> To me the switch to head dropping essentially killed the tail loss RTO
>> problem, eliminated most of the need for ecn.
>
> I doubt that: TCP will need to retransmit that packet at the head, and that takes an RTT - all the packets after it will need to wait in the receiver buffer before the application gets them.
> But I don’t have measurements to prove my point, so I’m just hand-waving…
I don’t doubt that this kills the tail loss RTO problem.
I doubt that it eliminates the need for ECN.
Cheers,
Michael
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next prev parent reply other threads:[~2018-11-27 21:21 UTC|newest]
Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-26 19:08 Pete Heist
2018-11-26 19:28 ` Neal Cardwell
2018-11-27 20:42 ` Dave Taht
2018-11-27 20:54 ` Toke Høiland-Jørgensen
2018-11-27 21:00 ` Dave Taht
2018-11-27 21:05 ` Toke Høiland-Jørgensen
2018-11-26 21:29 ` Jonathan Morton
2018-11-27 9:24 ` Luca Muscariello
2018-11-27 10:26 ` Bless, Roland (TM)
2018-11-27 10:29 ` Luca Muscariello
2018-11-27 10:35 ` Bless, Roland (TM)
2018-11-27 10:40 ` Luca Muscariello
2018-11-27 10:50 ` Mikael Abrahamsson
2018-11-27 11:01 ` Luca Muscariello
2018-11-27 11:21 ` Mikael Abrahamsson
2018-11-27 12:17 ` Jonathan Morton
2018-11-27 13:37 ` Luca Muscariello
2018-11-27 13:49 ` Mikael Abrahamsson
2018-11-27 14:07 ` Luca Muscariello
2018-11-27 14:18 ` Mikael Abrahamsson
2018-11-27 18:44 ` Kathleen Nichols
2018-11-27 19:25 ` Dave Taht
2018-11-27 21:57 ` Roland Bless
2018-11-27 11:53 ` Bless, Roland (TM)
2018-11-27 11:58 ` Luca Muscariello
2018-11-27 12:22 ` Bless, Roland (TM)
2018-11-27 11:06 ` Jonathan Morton
2018-11-27 11:07 ` Michael Welzl
2018-11-29 7:35 ` Dave Taht
2018-11-29 18:43 ` Stephen Hemminger
2018-11-29 19:08 ` Dave Taht
2018-11-30 5:51 ` Mikael Abrahamsson
2018-11-30 19:02 ` Dave Taht
2018-11-30 19:58 ` Stephen Hemminger
2018-11-27 11:04 ` Michael Welzl
2018-11-27 12:48 ` Bless, Roland (TM)
2018-11-27 11:40 ` Bless, Roland (TM)
2018-11-27 11:43 ` Bless, Roland (TM)
2018-11-29 7:39 ` Dave Taht
2018-11-29 7:45 ` Jonathan Morton
2018-11-29 7:54 ` Dave Taht
2018-11-29 8:09 ` Luca Muscariello
2018-11-29 13:49 ` Bless, Roland (TM)
2018-11-29 8:41 ` Bless, Roland (TM)
2018-11-29 7:33 ` Dave Taht
2018-11-29 8:13 ` Bless, Roland (TM)
2018-11-29 10:00 ` Pete Heist
2018-11-29 16:09 ` Luca Muscariello
2018-11-29 17:07 ` Mario Hock
2018-11-29 22:30 ` Luca Muscariello
2018-11-30 9:55 ` Mario Hock
2018-11-30 10:32 ` Luca Muscariello
2018-11-30 11:04 ` Jonathan Morton
2018-11-30 11:53 ` jf
2018-12-03 9:42 ` Mario Hock
2018-11-27 11:52 ` Toke Høiland-Jørgensen
2018-11-28 3:37 ` [Bloat] AFD Dave Taht
2018-11-27 20:58 ` [Bloat] when does the CoDel part of fq_codel help in the real world? Dave Taht
2018-11-27 22:19 ` Luca Muscariello
2018-11-27 22:30 ` Roland Bless
2018-11-27 23:17 ` Dave Taht
2018-11-28 3:47 ` Kathleen Nichols
2018-11-28 9:56 ` Luca Muscariello
2018-11-28 10:40 ` Dave Taht
2018-11-28 10:48 ` Luca Muscariello
2018-11-28 12:10 ` Bless, Roland (TM)
2018-11-29 7:22 ` Dave Taht
2018-11-29 7:20 ` Dave Taht
2018-11-27 20:50 ` Dave Taht
2018-11-26 21:56 ` Michael Welzl
2018-11-26 22:13 ` Toke Høiland-Jørgensen
2018-11-27 8:54 ` Pete Heist
2018-11-27 9:31 ` Jonathan Morton
2018-11-27 13:19 ` Michael Richardson
2018-11-27 18:59 ` Jonathan Morton
2018-11-27 20:10 ` Dave Taht
2018-11-27 21:17 ` Michael Welzl
2018-11-27 21:20 ` Michael Welzl [this message]
2018-11-29 7:11 ` Dave Taht
2018-11-29 7:28 ` [Bloat] incremental deployment, transport and L4S (Re: when does the CoDel part of fq_codel help in the real world?) Mikael Abrahamsson
2018-11-29 7:36 ` Jonathan Morton
2018-11-29 7:46 ` Mikael Abrahamsson
2018-11-29 8:08 ` Michael Welzl
2018-11-29 10:30 ` Jonathan Morton
2018-11-29 12:06 ` Michael Welzl
2018-11-29 12:52 ` Jonathan Morton
2018-11-30 7:54 ` Michael Welzl
2019-02-03 18:20 ` Dave Taht
2018-11-29 12:12 ` Michael Welzl
2018-11-29 12:56 ` Jonathan Morton
2018-11-29 13:30 ` Mikael Abrahamsson
2018-11-29 23:27 ` Jonathan Morton
2018-11-30 6:01 ` Mikael Abrahamsson
2018-11-29 14:06 ` Bless, Roland (TM)
2018-11-29 8:09 ` Jonathan Morton
2018-11-29 8:19 ` Mikael Abrahamsson
2018-11-29 8:34 ` Jonathan Morton
2018-11-29 10:15 ` Sebastian Moeller
2018-11-29 10:53 ` Mikael Abrahamsson
2018-11-30 4:54 ` Dave Taht
2018-11-28 2:04 ` [Bloat] when does the CoDel part of fq_codel help in the real world? Pete Heist
2018-11-28 3:52 ` Dave Taht
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