[Cake] Cake vs fq_codel and c/burst on an ER-X bridge

[Dave Taht]

On Tue, Sep 11, 2018 at 1:20 AM Sebastian Moeller <moeller0 at gmx.de> wrote:
>
> Hi Dave,
>
> > On Sep 11, 2018, at 10:20, Dave Taht <dave.taht at gmail.com> wrote:
> >
> > What I "fixed" was on the apu2 with the burst/cburst change, I went
> > from completely bottlenecked on one softirq to having 3 eat cpu, and
> > from 400mbps to 900mbps. Now, that's a quad core and the e1000 (?)
> > driver. The edgerouter X is a dual core, and you did see a small
> > improvement in throughput, but I'd hoped for more.
>
> Well, assuming my intuitions about how burst/cburst ameliorate the issue, we might simply have to say accept an additional 5ms delay/jitter to make it perform better. It is basically the same batching approach that always helps throughput of a cyclic process can not be repeated often enough, simply do more per iteration...
>
> Best Regards
>         Sebastian
>

I buy what you are saying. I just wished it was a magic bullet for
other than the apu2!
-- 

Dave Täht
CEO, TekLibre, LLC
http://www.teklibre.com
Tel: 1-669-226-2619