[Cake] cake at 60gbit

[Pete Heist]

> On Jul 3, 2018, at 12:27 PM, Toke Høiland-Jørgensen <toke at toke.dk> wrote:
> 
> Jonathan Morton <chromatix99 at gmail.com> writes:
> 
>>> On 3 Jul, 2018, at 1:23 am, Toke Høiland-Jørgensen <toke at toke.dk> wrote:
>>> 
>>> My hunch is that this has something to do with the way mlx5 uses
>>> multiple receive queues (and thus multiple CPUs). Which is probably
>>> different from veth...
>> 
>> At this stage I'm pretty confident it has nothing to do with Cake, and
>> everything to do with the Mellanox hardware and driver. It does strike
>> me that Linux' default handling of multiqueue hardware doesn't map
>> very well to the qdisc interface.
> 
> Well, it doesn't happen with fq_codel, so even if it is a driver bug, it
> is being triggered by cake specifically…

Does fq_codel run at the full 100gbit on your hardware?