Starlink has bufferbloat. Bad.
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From: Bruce Perens <bruce@perens.com>
To: Ben Greear <greearb@candelatech.com>
Cc: Dave Taht via Starlink <starlink@lists.bufferbloat.net>
Subject: Re: [Starlink] It's still the starlink latency...
Date: Mon, 26 Sep 2022 13:24:33 -0700	[thread overview]
Message-ID: <CAK2MWOsn5NrTqXHSq6JMDJ2fsW4OHq=RfvNXr8bmo9+siSPMzA@mail.gmail.com> (raw)
In-Reply-To: <00fb11bb-74cc-6512-a890-6a4a6efcaa4f@candelatech.com>

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On Mon, Sep 26, 2022 at 1:14 PM Ben Greear via Starlink <
starlink@lists.bufferbloat.net> wrote:

> I think that engineers telling other engineers (military) that something
> isn't
> sufficient is making a lot of assumptions that should not be made.
>

I don't think we need quite that call to inaction :-) . I can certainly see
the problem on my Starlink connection, and can classify the degradation of
performance under load that should not be there. It's insufficient for a
low latency video call, which I think is an easy definition of a
lowest-common-denominator for anything involving vehicle control.

And if you want to propose some solution, then define the metrics of that
> solution.  First,
> what is max latency/jitter/whatever that the application can handle and
> still be useful?
> Why exactly is your ham thing failing, and what latency/jitter would
> resolve it.  And/or, what mitigation
> in your software/procedures would solve it.
>

My ham application is equivalent to a low-latency voice-only WebRTC call.
There are diagnostics for them, and for the video call mentioned above. I
would hope that Taht could put together numbers.


> I know that Dave & crew have made some improvements to the wifi stack, but
> it is far from
> solved even today.  Maybe effort is better done on wifi where developers
> that are not @spacex
> can actually make changes and test results.
>

This does seem to be a call to inaction, doesn't it? Dave and Co. have been
working on WiFi for quite some time and have good papers.

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  reply	other threads:[~2022-09-26 20:24 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-21 18:35 Dave Taht
2022-09-22 11:41 ` Andrew Crane
2022-09-22 12:01   ` Mike Puchol
2022-09-22 13:46     ` warren ponder
2022-09-22 15:07       ` Dave Taht
2022-09-22 15:26         ` Dave Taht
2022-09-26 15:20 ` Livingood, Jason
2022-09-26 15:29   ` Dave Taht
2022-09-26 15:57     ` Sebastian Moeller
2022-09-26 16:21     ` Dave Taht
2022-09-26 16:32       ` Bruce Perens
2022-09-26 19:59         ` Eugene Chang
2022-09-26 20:04           ` Bruce Perens
2022-09-26 20:14             ` Ben Greear
2022-09-26 20:24               ` Bruce Perens [this message]
2022-09-26 20:32                 ` Dave Taht
2022-09-26 20:36                   ` Bruce Perens
2022-09-26 20:47                 ` Ben Greear
2022-09-26 20:19             ` Eugene Y Chang
2022-09-26 20:28               ` Dave Taht
2022-09-26 20:32                 ` Bruce Perens
2022-09-26 20:35               ` Bruce Perens
2022-09-26 20:48               ` David Lang
2022-09-26 20:54                 ` Eugene Y Chang
2022-09-26 21:01                   ` Sebastian Moeller
2022-09-26 21:10                     ` Eugene Y Chang
2022-09-26 21:20                       ` Sebastian Moeller
2022-09-26 21:35                         ` Eugene Y Chang
2022-09-26 21:44                           ` David Lang
2022-09-26 21:44                           ` Bruce Perens
2022-09-27  0:35                             ` Dave Taht
2022-09-27  0:55                               ` Bruce Perens
2022-09-27  1:12                                 ` Dave Taht
2022-09-27  4:06                               ` Eugene Y Chang
2022-09-27  3:50                             ` Eugene Y Chang
2022-09-27  7:09                               ` Sebastian Moeller
2022-09-27 22:46                                 ` Eugene Y Chang
2022-09-28  9:54                                   ` Sebastian Moeller
2022-09-28 18:49                                     ` Eugene Y Chang
2022-09-26 21:22                       ` David Lang
2022-09-26 21:29                         ` Sebastian Moeller
2022-09-27  3:47                           ` Eugene Y Chang
2022-09-27  6:36                             ` Sebastian Moeller
2022-09-27 13:55                               ` Dave Taht
2022-09-28  0:20                                 ` Eugene Y Chang
2022-09-26 21:02                   ` Bruce Perens
2022-09-26 21:14                     ` Dave Taht
2022-09-26 21:10                   ` Dave Taht
2022-09-26 21:28                     ` warren ponder
2022-09-26 21:34                       ` Bruce Perens
2022-09-27 16:14                       ` Dave Taht
2022-09-26 21:17                   ` David Lang
2022-09-29  9:10 David Fernández
2022-09-29 19:34 ` Eugene Chang
2022-10-17 13:50 David Fernández
2022-10-17 16:53 ` David Fernández

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