[Cake] issues with shaping cake to 60 gbits or in unlimited mode at 100gbps

Dave Taht dave.taht at gmail.com
Mon Jun 4 17:32:42 EDT 2018

I would like to point a finger at the mlx5 code rather than cake itself,
I am wondering if there is anyone out there with a different 100gps
capable device and setup that could give the sch_cake code a go?

we've been unable to duplicate the lockup we're seeing with the veth devices,
for example.

On Fri, Jun 1, 2018 at 11:17 AM, David Miller <davem at davemloft.net> wrote:
> From: Toke Høiland-Jørgensen <toke at toke.dk>
> Date: Fri, 01 Jun 2018 19:42:12 +0200
>> Toke Høiland-Jørgensen <toke at toke.dk> writes:
>>> This patch series adds the CAKE qdisc, and has been split up to ease
>>> review.
>>> I have attempted to split out each configurable feature into its own patch.
>>> The first commit adds the base shaper and packet scheduler, while
>>> subsequent commits add the optional features. The full userspace API and
>>> most data structures are included in this commit, but options not
>>> understood in the base version will be ignored.
>> Hmm, there seems to be a lockup issue being triggered when running CAKE
>> at high speeds (>40 Gbps in my tests). Please drop this series for now,
>> we'll return for 4.19 with a revised version.
> Ok.
> Thanks for continuing to push this work along.


Dave Täht
CEO, TekLibre, LLC
Tel: 1-669-226-2619

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