On 22 June 2021 06:00:48 CEST, Stephen Hemminger <[email protected]>
wrote:
>Is there any consumer hardware that can actually keep up and do AQM at
>1Gbit.
Over in the OpenWrt forums the same question pops up routinely once per
week. The best answer ATM seems to be a combination of a raspberry pi4B with a
decent USB3 gigabit ethernet dongle, a managed switch and any capable (OpenWrt)
AP of the user's liking. With 4 arm A72 cores the will traffic shape up to a
gigabit as reported by multiple users.
>It seems everyone seems obsessed with gamer Wifi 6. But can only do
>300Mbit single
>stream with any kind of QoS.
IIUC most commercial home routers/APs bet on offload engines to do most of the
heavy lifting, but as far as I understand only the NSS cores have a shaper and
fq_codel module....
>
>It doesn't help that all the local ISP's claim 10Mbit upload even with
>1G download.
>Is this a head end provisioning problem or related to Docsis 3.0 (or
>later) modems?
For DOCSIS the issue seems to be an unfortunate frequency split between up and
downstream and use of lower efficiency coding schemes .
Over here the incumbent cable isp provisions fifty Mbps for upstream and plans
to increase that to hundred once the upstream is switched to docsis 3.1.
I believe one issue is that since most of the upstream is required for the
reverse ACK traffic for the download and hence it can not be oversubscribed too
much.... but I think we have real docsis experts on the list, so I will stop my
speculation here...
Regards
Sebastian
>
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