[Cake] Cake latency update

[Jonathan Morton]

> On 10 Feb, 2017, at 12:05, Pete Heist <peteheist at gmail.com> wrote:
> 
> It means that both the ingress and egress have been redirected over the same IFB device and QoS'd together.

Okay, I guessed as much but wanted to be sure.

I can’t think of any theoretical reason for these results.  Cake’s flow isolation should be robust enough to cope transparently with bidirectional traffic in half-duplex mode.  As you say, a C2D should easily be able to keep up, and at these modest rates I can even discount PCI bandwidth as a concern.  So I might need to try to reproduce it here.

Does the problem go away if you use a wired link with the same setup otherwise?  Or is that inconvenient to try?  I have some ath9k equipped machines, but they would need to be set up.

 - Jonathan Morton