From: "Holland, Jake" <jholland@akamai.com>
To: Dave Taht <dave.taht@gmail.com>,
ECN-Sane <ecn-sane@lists.bufferbloat.net>
Subject: Re: [Ecn-sane] osx not doing ecn for me
Date: Thu, 9 Jan 2020 21:41:01 +0000 [thread overview]
Message-ID: <80F6ABAB-EDDA-4B06-9014-D31E448FD027@akamai.com> (raw)
In-Reply-To: <CAA93jw5ODWCKNxr-qMMJZRST94wWTGa3-2vDqSZecLcm5cujDg@mail.gmail.com>
Are you sure it's not just temporarily held down?
IIRC Padma said they shut it off for something like an hour or 3
whenever they notice an "anomaly", according to a bunch of heuristics
that can occasionally hit false positives:
https://datatracker.ietf.org/meeting/98/materials/slides-98-maprg-tcp-ecn-experience-with-enabling-ecn-on-the-internet-padma-bhooma-00.pdf
Anyway, my mac still asks for ECN, fwiw. My sysctls say it like this,
and tweaking them I would imagine would change it around in ways I'd
want to check if I had done anything to them:
net.inet.tcp.ecn_timeout: 60
net.inet.tcp.ecn_setup_percentage: 100
net.inet.tcp.ecn_initiate_out: 2
net.inet.tcp.ecn_negotiate_in: 2
HTH.
-Jake
On 2020-01-09, 13:18, "Dave Taht" <dave.taht@gmail.com> wrote:
sometime in the last three months my osx box stopped attempting ecn negotiation.
It would to verify if its working or not on other osx and ios boxes.
--
Make Music, Not War
Dave Täht
CTO, TekLibre, LLC
http://www.teklibre.com
Tel: 1-831-435-0729
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next prev parent reply other threads:[~2020-01-09 21:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-09 21:18 Dave Taht
2020-01-09 21:41 ` Holland, Jake [this message]
2020-01-09 23:30 ` Pete Heist
2020-01-09 23:45 ` Dave Taht
2020-01-10 8:48 ` Michael Welzl
2020-01-10 9:41 ` Pete Heist
2020-03-21 4:23 ` Dave Taht
2020-03-21 18:41 ` Holland, Jake
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