[Bloat] Still seeing bloat with a DOCSIS 3.1 modem

[Jim Gettys]

Birdies have told me that it is possible for DOCSIS 3.1 modems to be
running in 3.0 mode.

Bitch at your ISP.
                                              - Jim

On Wed, Mar 25, 2020 at 1:01 AM Aaron Wood <woody77 at gmail.com> wrote:

> I recently upgraded service from 150up, 10dn Mbps to xfinity's gigabit
> (with 35Mbps up) tier, and picked up a DOCSIS 3.1 modem to go with it.
>
> Flent test results are here:
>
> https://burntchrome.blogspot.com/2020/03/bufferbloat-with-comcast-gigabit-with.html
>
> tl/dr;  1000ms of upstream bufferbloat
>
> But it's DOCSIS 3.1, so why isn't PIE working?  Theory:  It's in DOCSIS
> 3.0 upstream mode based on the status LEDs.  Hopefully it will go away if I
> can convince it to run in DOCSIS 3.1 mode.
>
> At the moment, however, my WRT1900AC isn't up to the task of dealing with
> these sorts of downstream rates.
>
> So I'm looking at the apu2, which from this post:
>
> https://forum.openwrt.org/t/comparative-throughput-testing-including-nat-sqm-wireguard-and-openvpn/44724
>
> Will certainly get most of the way there.
>
> Although
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