I have, finally. It's been running for a week or so, now.

OpenWRT was an _adventure_. The board is UEFI, not standard bios. And while it will merrily boot OpenWRT's non-uefi images off of USB, it won't boot the non-UEFI setup from the internal storage (I'm using the eMMC). So _that_ was fun (and I made some dumb mistakes that were especially fun to correct.

But it's running OpenWRT 19.07 (and a UEFI bootloader before grub that's from ToT OpenWRT).

Anyway, I have cake running, 950Mbps ingress and 35Mbps egress (modem is provisioned at 1.3G ingress, and a bit over 35Mbps egress). fq_codel was defaulted, in multi-queue mode. While I'm using cake on ingress, my local link hasn't been hitting the limiter very often:

Tin 0

thresh 950Mbit

target 1.5ms

interval 30.0ms

pk_delay 22us

av_delay 9us

sp_delay 2us

backlog 0b

pkts 243608193

bytes 250748364896

way_inds 13167720

way_miss 1245030

way_cols 0

drops 1075

marks 101

ack_drop 0

sp_flows 0

bk_flows 1

un_flows 0

max_len 69876

quantum 1514

Given that most of the hosts that I interact with are only about 10-15ms away, I'm probably going to change the interval target to better match that.

Interestingly, while it has a pair of multiqueue NICs (i211s), the igbe driver isn't configuring them for RSS. Both output queues are being used, but not the ingress queues:

wan interface:

tx_queue_0_packets: 56635989

tx_queue_1_packets: 39777210

rx_queue_0_packets: 243646072

rx_queue_1_packets: 0

lan interface:

tx_queue_0_packets: 85047897

tx_queue_1_packets: 162004500

rx_queue_0_packets: 111174855

rx_queue_1_packets: 0

Since I have housemates that don't appreciate me messing with the network during their meetings, I haven't gotten around to poking more deeply at that (or at experimenting with running cake on two ingress queues).

That being said, I bench-tested this before I put it into operation and was able to see 940Mbps of iperf goodput through cake and NAT... Took all of a core, though (and that core was still cold and therefore potentially able to boost to 2.5GHz). I haven't determined how long it will take to thermally throttle, and if bandwidth suffers as a result.

Pretty happy with it so far, though.

On Sun, Apr 26, 2020 at 7:46 PM Dave Taht <dave.taht@gmail.com> wrote:

anyone got around to hacking on this board yet?

On Sat, Apr 4, 2020 at 9:27 AM Aaron Wood <woody77@gmail.com> wrote:
>
> The comparison of chipset performance link (to OpemWRT forums) that went out had this chip, the J4105 as the fastest. Able to do a gigabit with cake (nearly able to do it in both directions).
>
> I think this has replaced the apu2 as the board I’m going with as my edge router.
>
> On Sat, Apr 4, 2020 at 9:10 AM Dave Taht <dave.taht@gmail.com> wrote:
>>
>> Historically I've found the "Celeron" chips rather weak, but it's just
>> a brand. I haven't the foggiest idea how well this variant will
>> perform.
>>
>> The intel ethernet chips are best of breed in linux, however. It's
>> been my hope that the 211 variant with the timed networking support
>> would show up in the field (sch_etx) so we could fiddle with that,
>> (the apu2s aren't using that version) but I cannot for the life of me
>> remember the right keywords to look it up at the moment. this feature
>> lets you program when a packet emerges from the driver and is sort of
>> a whole new ballgame when it comes to scheduling - there hasn't been
>> an aqm designed for it, and you can do fq by playing tricks with the
>> sent timestamp.
>>
>> All the other features look rather nice on this board.
>>
>> On Sat, Apr 4, 2020 at 7:47 AM David P. Reed <dpreed@deepplum.com> wrote:
>> >
>> > Thanks! I ordered one just now. In my experience, this company does rather neat stuff. Their XMOS based microphone array (ReSpeaker) is really useful. What's the state of play in Linux/OpenWRT for Intel 9560 capabilities regarding AQM?
>> >
>> > On Saturday, April 4, 2020 12:12am, "Aaron Wood" <woody77@gmail.com> said:
>> >
>> > > _______________________________________________
>> > > Cake mailing list
>> > > Cake@lists.bufferbloat.net
>> > > https://lists.bufferbloat.net/listinfo/cake
>> > > https://www.seeedstudio.com/ODYSSEY-X86J4105800-p-4445.html
>> > >
>> > > quad-core Celeron J4105 1.5-2.5 GHz x64
>> > > 8GB Ram
>> > > 2x i211t intel ethernet controllers
>> > > intel 9560 802.11ac (wave2) wifi/bluetooth chipset
>> > > intel built-in graphics
>> > > onboard ARM Cortex-M0 and RPi & Arduino headers
>> > > m.2 and PCIe adapters
>> > > <$200
>> > >
>> >
>> >
>> > _______________________________________________
>> > Bloat mailing list
>> > Bloat@lists.bufferbloat.net
>> > https://lists.bufferbloat.net/listinfo/bloat
>>
>>
>>
>> --
>> Make Music, Not War
>>
>> Dave Täht
>> CTO, TekLibre, LLC
>> http://www.teklibre.com
>> Tel: 1-831-435-0729
>
> --
> - Sent from my iPhone.

--
Make Music, Not War

Dave Täht
CTO, TekLibre, LLC
http://www.teklibre.com
Tel: 1-831-435-0729