[Cake] Upstream submission of dual-mode fairness patch

[Georgios Amanakis]

Thanks for testing Pete! The unfairness you see occurs if you shape
ingress using ifb on the same interface you shape egress, right?
Sounds puzzling to me, and I don't have an explanation right now.


On Fri, Mar 1, 2019 at 6:55 AM Pete Heist <pete at heistp.net> wrote:
>
>
> On Mar 1, 2019, at 12:01 PM, Toke Høiland-Jørgensen <toke at toke.dk> wrote:
>
> Pete Heist <pete at heistp.net> writes:
>
> That said, unless there’s an obvious reason for this that’s fixable,
> I’m fine with how it is, considering the improvement. :)
>
>
> Cool! And you haven't seen any regressions in other usage? :)
>
>
> To be honest, today’s the first time I tried it and I haven’t done any testing on it beyond fairness. (So, ship it!)
>
> At least, I haven’t seen any other problems in this one-armed routing scenario or a regular host to host scenario.
>
> Host fairness seems “mostly good" no matter what values I choose for the number of flows of the four clients, flow fairness still looks good, and I don’t see any problems starting and stopping different numbers of flows mid-test.
>
> Pete
>
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