Well, of all the devices in my house (maybe 100), only the router attached to
the cable modem (which is a 2x GigE Intel Linux board based on Fedora 29 server
with sch_cake configured) is running fq_codel. And setting that up was a labor
of love. But it works a charm for my asymmetric Gigabit cable service.
My home's backbone is 10 GigE fiber, so I suppose fq_codel would be helpful for
devices that run on 1 GigE subnets like my 2 802.11ac access points when
talking to my NAS's.
However, the 802.11ac access point high speed functionality doesn't seem to be
supportable by LEDE. So what can I do?
I suppose I could stick some little custom Intel Linux 2x GigE devices between
access points and the 10 GigE backbone, and put fq_codel in there.
My point is, to get the primary benefit of bufferbloat reduction, one has to
stick little Linux boxes everywhere, because fq_codel is not supported except
via DIY hacking.
And indeed, 10 GigE->1 GigE buffering does affect storage access latency in bad
ways.
We see the same problem in datacenter networks that have excessive buffering -
a famous switch company backed by Andy Bechtolsheim is really problematic
because they claim building up huge buffers is a "feature" not a bug.
-----Original Message-----
From: "Valdis Klētnieks" <valdis.kletni...@vt.edu>
Sent: Tuesday, May 14, 2019 1:57pm
To: "Rich Brown" <richb.hano...@gmail.com>
Cc: "cerowrt-devel" <cerowrt-de...@lists.bufferbloat.net>, "bloat"
<bloat@lists.bufferbloat.net>
Subject: Re: [Cerowrt-devel] fq_codel is SEVEN years old today...
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On Tue, 14 May 2019 08:16:06 -0400, Rich Brown said:
> Let's all pat ourselves on the back for this good work!
Do we have an estimate of what percent of connected devices
are actually using fq_codel or other modern anti-bloat methods?
I'm reasonably sure my TV, my PS3, and my PS4 are still
behind the curve.
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