Re: [Cake] [Bloat] New board that looks interesting

[Dean Scarff <dos@scarff.id.au>]

 Any stats on how much power it pulled during your tests and when idle?

 On Fri, 18 Dec 2020 15:48:46 -0800, Aaron Wood wrote:
> 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.