[Cake] Cake on openwrt - falling behind

[Georgios Amanakis]

Dear Kevin and Toke,

First of all thank you for all your efforts!

I recently acquired a linksys wrt1900acs (arm/mvebu), I will test this by
compiling latest openwrt with latest sch_cake/master and tc-adv/master.


Best,
George


On Sat, Jun 30, 2018, 4:29 AM Kevin Darbyshire-Bryant via Cake <
cake at lists.bufferbloat.net> wrote:

>
>
>
> ---------- Forwarded message ----------
> From: Kevin Darbyshire-Bryant <kevin at darbyshire-bryant.me.uk>
> To: Cake List <cake at lists.bufferbloat.net>
> Cc:
> Bcc:
> Date: Sat, 30 Jun 2018 08:29:05 +0000
> Subject: Cake on openwrt - falling behind
> Hi Chaps,
>
> I’m concerned that cake on openwrt is falling behind.  Due to strange
> behaviour at least on MIPS since commit
> https://github.com/dtaht/sch_cake/commit/af1d7cde7046af55ec867b29854d754816b64bc8
> Switch rates to 64bit, openwrt has been ‘stuck’ on the prior commit.  I
> personally have hack patches in my that effectively reverts the conversion
> to 64 netlink values in cake & tc and I’m pleased to say that works,
> however the wider community are a) not so lucky b) not actually running our
> latest code, there are a number of tweaks to the ack filter code that
> openwrt users are not benefitting from.
>
> Toke & myself dug into this a bit and we don’t, so far, think this is a
> bug in cake but is rather exposing an issue in netlink handling.  But we’ve
> hit an information vacuum, in essence I’m only seeing this on MIPS/Openwrt
> *BUT* that’s the only thing I can actually test on.  So is this 32bit MIPS
> only?  Is it Openwrt only?  Is it MIPS & Openwrt only?  Is it 32bit archs
> only?  And so on.
>
> This really needs to be investigated & solved, so that a) openwrt’s cake
> can be bumped and b) Someone can get on with backporting the class handling
> code (which is being sent upstream) to 4.14/4.9 (maybe earlier)
>
> If *you* have the means of compiling the latest cake & tc code on your
> platform could you please do so and report architecture etc if you do/do
> not see cake’s tin stats from ‘tc -s qdisc’ (that’s the biggest indicator
> of the issue)
>
>
> Cheers,
>
> Kevin D-B
>
> 012C ACB2 28C6 C53E 9775  9123 B3A2 389B 9DE2 334A
>
>
>
>
> ---------- Forwarded message ----------
> From: Kevin Darbyshire-Bryant via Cake <cake at lists.bufferbloat.net>
> To: Cake List <cake at lists.bufferbloat.net>
> Cc:
> Bcc:
> Date: Sat, 30 Jun 2018 01:29:10 -0700 (PDT)
> Subject: [Cake] Cake on openwrt - falling behind
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