From: Eric Dumazet <eric.dumazet@gmail.com>
To: Noah Causin <n0manletter@gmail.com>
Cc: Jonathan Morton <chromatix99@gmail.com>,
Andrew McGregor <andrewmcgr@gmail.com>,
cake@lists.bufferbloat.net,
"codel@lists.bufferbloat.net" <codel@lists.bufferbloat.net>
Subject: Re: [Codel] [Cake] Proposing COBALT
Date: Sat, 04 Jun 2016 10:49:59 -0700 [thread overview]
Message-ID: <1465062599.2968.11.camel@edumazet-glaptop3.roam.corp.google.com> (raw)
In-Reply-To: <10d58240-e106-ff1f-a038-df5bc0ee7a36@gmail.com>
On Sat, 2016-06-04 at 13:10 -0400, Noah Causin wrote:
> I notice that issue with Steam. Steam uses lots of ECN, which can be
> nice for saving bandwidth with large games. The issue I notice is that
> Steam is the one application that can cause me to have ping spikes of
> over 100ms, even though I have thoroughly tested my network using both
> flent and dslreports.
>
> I also notice that I get large sparse delays in the cake stats during
> steam downloads. The highest I can remember right now is like 22ms.
ECN (as in RFC 3168) is well known to be trivially exploited by peers
pretending to be ECN ready, but not reacting to feedbacks, only to let
their packets traverse congested hops with a lower drop probability.
https://www.ietf.org/rfc/rfc3540.txt
next prev parent reply other threads:[~2016-06-04 17:50 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-20 10:04 [Codel] " Jonathan Morton
2016-05-20 11:37 ` [Codel] [Cake] " moeller0
2016-05-20 12:18 ` Jonathan Morton
2016-05-20 13:22 ` moeller0
2016-05-20 14:36 ` Jonathan Morton
2016-05-20 16:03 ` David Lang
2016-05-20 17:31 ` Jonathan Morton
[not found] ` <CALnBQ5mNgHgFoTcvLxppv2P9XODc4D-4NObKyqbZJ0PccVkwiA@mail.gmail.com>
2016-05-20 16:43 ` Jonathan Morton
2016-05-23 18:30 ` Jonathan Morton
2016-05-24 13:47 ` Jeff Weeks
2016-05-24 14:07 ` Jonathan Morton
2016-05-24 15:52 ` Dave Täht
2016-05-24 15:56 ` Jonathan Morton
2016-05-24 16:02 ` Dave Taht
2016-05-26 12:33 ` Jonathan Morton
2016-06-03 19:09 ` Noah Causin
2016-06-03 19:34 ` Jonathan Morton
2016-06-04 1:01 ` Andrew McGregor
2016-06-04 6:23 ` Jonathan Morton
2016-06-04 13:55 ` Jonathan Morton
2016-06-04 14:01 ` moeller0
2016-06-04 14:16 ` Jonathan Morton
2016-06-04 15:03 ` moeller0
2016-06-04 17:10 ` Noah Causin
2016-06-04 17:49 ` Eric Dumazet [this message]
2016-06-04 19:55 ` Jonathan Morton
2016-06-04 20:56 ` Eric Dumazet
2016-06-27 3:56 ` Jonathan Morton
2016-06-27 7:59 ` moeller0
2016-05-20 13:41 ` David Lang
2016-05-20 13:46 ` moeller0
2016-05-20 14:04 ` David Lang
2016-05-20 14:42 ` Kathleen Nichols
2016-05-20 15:11 ` Jonathan Morton
2016-05-20 15:12 ` Jonathan Morton
2016-05-20 16:05 ` David Lang
2016-05-20 17:06 ` Jonathan Morton
2016-05-20 16:20 ` Rick Jones
2016-05-20 16:35 ` Jonathan Morton
2016-05-20 17:01 ` Rick Jones
2016-05-20 17:07 ` Jonathan Morton
2016-05-20 17:21 ` Rick Jones
2016-05-20 17:26 ` David Lang
2016-05-20 17:33 ` Jonathan Morton
2016-05-20 14:09 ` Jonathan Morton
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