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From: Jonathan Morton <chromatix99@gmail.com>
To: "Toke Høiland-Jørgensen" <toke@toke.dk>
Cc: Sebastian Moeller <moeller0@gmx.de>, cake@lists.bufferbloat.net
Subject: Re: [Cake] A few puzzling Cake results
Date: Wed, 18 Apr 2018 19:54:39 +0300	[thread overview]
Message-ID: <5BD20E12-2408-4393-8560-3FDA52D86DB3@gmail.com> (raw)
In-Reply-To: <87fu3s1om2.fsf@toke.dk>

> On 18 Apr, 2018, at 7:11 pm, Toke Høiland-Jørgensen <toke@toke.dk> wrote:
> 
> What you're saying here is that you basically don't believe there are
> any applications where a bulk TCP flow would also want low queueing
> latency? :)

I'm saying that there's a tradeoff between intra-flow induced latency and packet loss, and I've chosen 4 MTUs as the operating point.

Bear in mind that with high packet loss, the retransmissions take an extra RTT to complete in any case, and there's a higher probability of incurring an RTO which will *really* hurt your intra-flow latency.

This equation is modified with ECN because a high signalling rate doesn't result in packet loss or retransmissions, but I'm not presently making any decisions based on ECN support, except the obvious one of whether to mark or drop.

 - Jonathan Morton


  parent reply	other threads:[~2018-04-18 16:54 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-17  9:42 Toke Høiland-Jørgensen
2018-04-17 10:04 ` Luca Muscariello
2018-04-17 10:38   ` Toke Høiland-Jørgensen
2018-04-17 12:05     ` Y
     [not found]     ` <mailman.225.1523966725.3573.cake@lists.bufferbloat.net>
2018-04-17 12:22       ` Toke Høiland-Jørgensen
2018-04-17 13:16         ` Jonas Mårtensson
2018-04-17 13:50           ` Toke Høiland-Jørgensen
2018-04-17 13:47         ` Luca Muscariello
2018-04-17 13:52         ` Luca Muscariello
2018-04-17 14:25           ` Toke Høiland-Jørgensen
2018-04-17 14:54             ` Luca Muscariello
2018-04-17 15:10               ` Toke Høiland-Jørgensen
2018-04-17 14:03 ` Jonathan Morton
2018-04-17 14:17   ` Toke Høiland-Jørgensen
2018-04-18 11:25     ` Toke Høiland-Jørgensen
2018-04-18 12:21       ` Kevin Darbyshire-Bryant
2018-04-18 12:57         ` Toke Høiland-Jørgensen
2018-04-18 13:13       ` Jonas Mårtensson
2018-04-18 13:21         ` Toke Høiland-Jørgensen
2018-04-18 14:12       ` Jonathan Morton
2018-04-18 14:30         ` Toke Høiland-Jørgensen
2018-04-18 15:03           ` Jonathan Morton
2018-04-18 15:17             ` Sebastian Moeller
2018-04-18 15:58               ` Jonathan Morton
2018-04-18 16:11                 ` Toke Høiland-Jørgensen
2018-04-18 16:25                   ` Dave Taht
2018-04-18 16:34                     ` Georgios Amanakis
2018-04-18 17:10                       ` Sebastian Moeller
2018-04-19  7:49                     ` Luca Muscariello
2018-04-19  8:11                       ` Jonathan Morton
2018-04-19  9:00                         ` Toke Høiland-Jørgensen
2018-04-19  9:21                           ` Jonathan Morton
2018-04-19  9:26                             ` Toke Høiland-Jørgensen
2018-04-19  9:55                               ` Jonathan Morton
2018-04-19 10:33                                 ` Toke Høiland-Jørgensen
2018-04-19 11:55                                   ` Luca Muscariello
2018-04-18 16:54                   ` Jonathan Morton [this message]
2018-04-18 17:02                     ` Dave Taht
2018-04-18 18:06                       ` Jonas Mårtensson
2018-04-18 18:11                         ` Toke Høiland-Jørgensen
2018-04-18 18:16                           ` Kevin Darbyshire-Bryant
     [not found]                           ` <mailman.238.1524075384.3573.cake@lists.bufferbloat.net>
2018-04-19  8:31                             ` Kevin Darbyshire-Bryant
2018-04-18 18:11                     ` Jonas Mårtensson
2018-04-18 19:53                     ` David Lang
2018-04-18 21:53                       ` Jonathan Morton
2018-04-19  9:22                         ` Toke Høiland-Jørgensen
2018-04-19  9:32                           ` Jonathan Morton

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