Discussion of explicit congestion notification's impact on the Internet
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From: Dave Taht <dave.taht@gmail.com>
To: Jonathan Morton <chromatix99@gmail.com>
Cc: "Rodney W. Grimes" <4bone@gndrsh.dnsmgr.net>,
	ECN-Sane <ecn-sane@lists.bufferbloat.net>
Subject: Re: [Ecn-sane] A brick wall threshold for SCE_threshold
Date: Tue, 9 Mar 2021 11:20:22 -0800	[thread overview]
Message-ID: <CAA93jw6Wu4n+kgXmcqvG60OtiwW9X61EeH_rO+HEJC0OVG9jmg@mail.gmail.com> (raw)
In-Reply-To: <C8E7CA7B-55A8-4174-98F3-885A236BE955@gmail.com>

On Tue, Mar 9, 2021 at 10:58 AM Jonathan Morton <chromatix99@gmail.com> wrote:
>
> > On 9 Mar, 2021, at 8:48 pm, Dave Taht <dave.taht@gmail.com> wrote:
> >
> > I do not think anything other than a brick wall can be implemented in high speed hardware.
>
> We've spoken to a Cisco guy who says they can already do Approximate Fairness at 100Gbps per port.  That's our benchmark.

I have long wondered how much of AFD they were selling.

>
> > I really wish you'd try a brick wall
>
> We did.  We didn't like the results.

But you did not try a bbr-like approach. Observe a mark, and the rtt inflation.

bbrv2 works pretty decently with CE_threshold already. making it work
with a brick wall
SCE made some sense.

>
>  - Jonathan Morton



-- 
"For a successful technology, reality must take precedence over public
relations, for Mother Nature cannot be fooled" - Richard Feynman

dave@taht.net <Dave Täht> CTO, TekLibre, LLC Tel: 1-831-435-0729

      reply	other threads:[~2021-03-09 19:20 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-09  0:36 [Ecn-sane] ect(1) queue selector question Pete Heist
2021-03-09  1:18 ` Dave Taht
2021-03-09  9:11   ` Pete Heist
2021-03-09 15:19   ` Rodney W. Grimes
2021-03-09 15:28     ` Dave Taht
2021-03-09 15:38       ` Rodney W. Grimes
2021-03-09 18:09       ` [Ecn-sane] A brick wall threshold for SCE_threshold Dave Taht
2021-03-09 18:42         ` Jonathan Morton
2021-03-09 18:48           ` Dave Taht
2021-03-09 18:58             ` Jonathan Morton
2021-03-09 19:20               ` Dave Taht [this message]

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