Starlink has bufferbloat. Bad.
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From: Oleg Kutkov <contact@olegkutkov.me>
To: starlink@lists.bufferbloat.net
Subject: Re: [Starlink] Starlink hidden buffers
Date: Sun, 14 May 2023 12:57:04 +0300	[thread overview]
Message-ID: <c12bcbf3-1e98-635f-79e3-58b94ecc0397@olegkutkov.me> (raw)
In-Reply-To: <a861ed27-cf13-3e8a-c7b5-96ee3dcb5176@auckland.ac.nz>


On 5/13/23 13:10, Ulrich Speidel via Starlink wrote:
> 3) We know that they aren't an artifact of the Starlink WiFi router 
> (our traceroutes were done through their Ethernet adaptor, which 
> bypasses the router), so they must be delays on the satellites or the 
> teleports. 

Here is what bypass mode does:

https://github.com/SpaceExplorationTechnologies/starlink-wifi-gen2/blob/main/openwrt/package/base-files/files/sbin/setup_iptables.sh#L19
https://github.com/SpaceExplorationTechnologies/starlink-wifi-gen2/blob/main/openwrt/package/base-files/files/sbin/wifi#L213
https://github.com/SpaceExplorationTechnologies/starlink-wifi-gen2/blob/main/openwrt/package/base-files/files/etc/init.d/wifi_control#L26 


So packages still going through this chain:
Dishy -> Mediatek PHY -> Linux kernel -> br-lan -> Linux kernel -> 
External LAN PHY (Marvell or MTK).

It's better to use a PoE injector and run tests without the Starlink router.

-- 
Best regards,
Oleg Kutkov


  parent reply	other threads:[~2023-05-14  9:57 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-13 10:10 Ulrich Speidel
2023-05-13 11:20 ` Sebastian Moeller
2023-05-13 12:16   ` Ulrich Speidel
2023-05-13 23:00     ` David Lang
2023-05-13 22:57 ` David Lang
2023-05-14  6:06   ` Ulrich Speidel
2023-05-14  6:55     ` David Lang
2023-05-14  8:43       ` Ulrich Speidel
2023-05-14  9:00         ` David Lang
2023-05-15  2:41           ` Ulrich Speidel
2023-05-15  3:33             ` David Lang
2023-05-15  6:36               ` Sebastian Moeller
2023-05-15 11:07                 ` David Lang
2023-05-24 12:55               ` Ulrich Speidel
2023-05-24 13:44                 ` Dave Taht
2023-05-24 14:05                   ` David Lang
2023-05-24 14:49                   ` Michael Richardson
2023-05-24 15:09                     ` Dave Collier-Brown
2023-05-24 15:31                     ` Dave Taht
2023-05-24 18:30                       ` Michael Richardson
2023-05-24 18:45                         ` Sebastian Moeller
2023-05-24 13:59                 ` David Lang
2023-05-24 22:39                   ` Ulrich Speidel
2023-05-25  0:06                     ` David Lang
2023-07-27 20:37                     ` Ulrich Speidel
2023-05-24 15:18                 ` Mark Handley
2023-05-24 21:50                   ` Ulrich Speidel
2023-05-25  0:17                     ` David Lang
2023-05-14  9:06         ` Sebastian Moeller
2023-05-14  9:13           ` David Lang
2023-05-14  9:57 ` Oleg Kutkov [this message]
2023-05-14  9:59   ` Oleg Kutkov
2023-05-24 15:26 ` Bjørn Ivar Teigen
2023-05-24 21:53   ` Ulrich Speidel

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