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From: Dave Taht <dave.taht@gmail.com>
Date: Mon, 22 Nov 2021 19:35:26 -0800
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To: bloat <bloat@lists.bufferbloat.net>, Rpm <rpm@lists.bufferbloat.net>
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Subject: [Rpm] *under*bloated networks
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In the last two weeks I have found two dramatically underbuffered Gbit
fiber networks.

This one appears to have about a 400 full size packet uplink buffer (5ms)[1=
]

https://imgur.com/a/Bm9hdNf

It was pretty remarkable to see how well multiple tcp flows still
achieved close to the full rate with such a small fixed size queue,
eventually.

A single bbr flow can't crack 150mbits: https://imgur.com/a/DpydL5K.

[1] Data courtesy testing "eethaw"'s eero 6's new hardware fq_codel
offload, which is, seemingly good to a gbit at least on one direction.

https://www.reddit.com/r/eero/comments/qxbkcl/66_is_out/


--=20
I tried to build a better future, a few times:
https://wayforward.archive.org/?site=3Dhttps%3A%2F%2Fwww.icei.org

Dave T=C3=A4ht CEO, TekLibre, LLC