From: Pete Heist <pete@heistp.net>
To: "Holland, Jake" <jholland@akamai.com>
Cc: Dave Taht <dave.taht@gmail.com>,
ECN-Sane <ecn-sane@lists.bufferbloat.net>
Subject: Re: [Ecn-sane] osx not doing ecn for me
Date: Fri, 10 Jan 2020 00:30:00 +0100 [thread overview]
Message-ID: <3644FEFF-F181-47A1-AD50-562662EEDCBA@heistp.net> (raw)
In-Reply-To: <80F6ABAB-EDDA-4B06-9014-D31E448FD027@akamai.com>
Mine negotiates it, but I’m stuck on 10.13.
This likely isn’t the problem, but I’ve fallen for the trap before that “netstat -sp tcp” needs to be run as root or all counters show 0...
> On Jan 9, 2020, at 10:41 PM, Holland, Jake <jholland@akamai.com> wrote:
>
> 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
> _______________________________________________
> Ecn-sane mailing list
> Ecn-sane@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/ecn-sane
>
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next prev parent reply other threads:[~2020-01-09 23:30 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
2020-01-09 23:30 ` Pete Heist [this message]
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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