[Bloat] Still seeing bloat with a DOCSIS 3.1 modem

[Aaron Wood]

>
> >>> 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.
> >>
> >> I think that while PIE is "mandatory to implement" in DOCSIS 3.1, the
> >> ISP still has to turn it on? So maybe yelling at them will work? (ha!)
>

I've chatted with someone about it, and they seemed to think it's
suspicious, but I'm not going to push it further until I have modem showing
that it's in DOCSIS 3.1 for upstream.

I do need to see if I can sort out what the SB8200's status messages are:

CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC
Addr: N/A; OFDM/OFDMA Profile ID: 2
3.;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;


> >>> 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.
> >>
> >> My Turris Omnia is doing fine on my 1Gbps connection (although that
> >> hardly suffers from bloat, so I'm not doing any shaping; did try it
> >> though, and it has no problem with running CAKE at 1Gbps).
> >
> >       Well, doing local network flent RRUL stress tests indicated that
> >       my omnia (at that time with TOS4/Openwrt18) only allowed up to
> >       500/500 Mbps shaping with bi directionally saturating traffic
> >       with full MTU-sized packets. So I undirectional CAKE at 1Gbps
> >       can work, but under full load, I did not manage that, what did I
> >       wrong?
>
> Hmm, not sure I've actually done full bidirectional shaping. And trying
> it now, it does seem to be struggling...


That's definitely an option for me, as I don't have to worry about a 2Gbps
total traffic, only about 1.03Gbps (since cable is so asymmetric).

But I'm also not sure I want to go with another ARM box.  The small x64
boxes are looking like a much better long-term option.
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