[Cake] Cake latency update

[Jonathan Morton]

> On 10 Feb, 2017, at 10:04, Pete Heist <peteheist at gmail.com> wrote:
> 
> I look forward to the throughput shifts being solved, where I see results like this:
> 
> http://www.drhleny.cz/bufferbloat/cake_hd-eth-ap_100ms_80mbit/index.html

That basically looks like it’s run out of CPU, so there’s hard choices to make over CPU allocation.  Cake isn’t responsible for that allocation, though it *might* be possible to optimise its use of the CPU a little further.

If you can obtain a CPU profile of that workload on that hardware, that might help to direct those efforts.

 - Jonathan Morton