From: Dave Taht <dave.taht@gmail.com>
To: Pete Heist <pete@heistp.net>
Cc: "Holland, Jake" <jholland@akamai.com>,
ECN-Sane <ecn-sane@lists.bufferbloat.net>
Subject: Re: [Ecn-sane] osx not doing ecn for me
Date: Thu, 9 Jan 2020 15:45:17 -0800 [thread overview]
Message-ID: <CAA93jw5zMWNNr_Z0gM2iiOqRoWnvTWJFqoXeic=dCp-tNsOVsg@mail.gmail.com> (raw)
In-Reply-To: <3644FEFF-F181-47A1-AD50-562662EEDCBA@heistp.net>
On Thu, Jan 9, 2020 at 3:30 PM Pete Heist <pete@heistp.net> wrote:
>
> 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...
No, that was the trap I'd fallen for. I'd seen it not attempt a couple
negotiations (from looking at the packet captures), then ran that, and
panicked!
Thx!!!!
> > 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
> >
> > _______________________________________________
> > Ecn-sane mailing list
> > Ecn-sane@lists.bufferbloat.net
> > https://lists.bufferbloat.net/listinfo/ecn-sane
>
--
Make Music, Not War
Dave Täht
CTO, TekLibre, LLC
http://www.teklibre.com
Tel: 1-831-435-0729
next prev parent reply other threads:[~2020-01-09 23:45 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
2020-01-09 23:45 ` Dave Taht [this message]
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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