[Cake] cake infinite loop(?) with hfsc on one-armed router

[Pete Heist]

Sorry, that’s without the patch, will give that a try when I have a chance and post the results, probably tomorrow...

> On Jan 7, 2019, at 12:30 PM, Toke Høiland-Jørgensen <toke at toke.dk> wrote:
> 
> Pete Heist <pete at heistp.net> writes:
> 
>>> On Jan 6, 2019, at 9:56 PM, Toke Høiland-Jørgensen <toke at toke.dk> wrote:
>>> 
>>> Pete Heist <pete at heistp.net> writes:
>>> 
>>>> Lastly, is using cake as a leaf to htb risky until a fix is made? I’ve
>>>> been doing that for a while without any apparent issues, though I’m
>>>> hesitating now to try that in a production environment.
>>> 
>>> Hmm, that's a good question. I would expect so; but I would also expect
>>> the issue to show up pretty much straight away, so if you haven't hit it
>>> yet, I may be wrong. I'll do some more digging... Should probably also
>>> try to replicate all this stuff on my own machine :)
>> 
>> 
>> Ok, after what I’m seeing on my APU1 tests on 3.16.7, I’m definitely
>> not putting split GSO into production. I just turned it on and off
>> three times and here’s what I got:
>> 
>> Split GSO on:
>> 
>> https://www.heistp.net/downloads/htb_split_gso/htb_cake_split_gso.svg
>> https://www.heistp.net/downloads/htb_split_gso/htb_cake_split_gso2.svg
>> https://www.heistp.net/downloads/htb_split_gso/htb_cake_split_gso3.svg
>> 
>> Split GSO off:
>> 
>> https://www.heistp.net/downloads/htb_split_gso/htb_cake_no_split_gso.svg
>> https://www.heistp.net/downloads/htb_split_gso/htb_cake_no_split_gso2.svg
>> https://www.heistp.net/downloads/htb_split_gso/htb_cake_no_split_gso3.svg
>> 
>> I’ve seen these square waves before with htb and wondered where they
>> came from, and I think we may finally have an answer! What manner of
>> thing causes this I don’t know, but there’s a chance you may end up
>> finding out… :)
> 
> Is this without the patch to CAKE that adjusts the qlen? And have you
> tried running with that patch (with HTB)?
> 
> -Toke