[Cake] A quick question about FQ_CoDel vs Cake

Luis E. Garcia luis at bitamins.net
Thu Apr 6 22:51:59 EDT 2017

Thanks Jonathan,
With this explanation it makes sense.


On Thu, Apr 6, 2017 at 11:06 AM Jonathan Morton <chromatix99 at gmail.com>

> > On 6 Apr, 2017, at 16:51, Luis E. Garcia <luis at bitamins.net> wrote:
> >
> > I've been doing some testing of Cake on LEDE (WD MyNet 750) and on
> EdgeOS (Ubiquity ERPoe). One big question that I have is why does Cake have
> a higher/better average throughput than FQ_CoDel? The graph seems a bit
> smoother through the speed test.
> >
> > The test are against a 10down/2up Mbps connection from a local provider.
> The main difference that’s probably responsible for this is Cake’s
> integrated deficit-mode shaper, which is more accurate on short timescales
> than the more typical token-bucket shaper that fq_codel is used with.
> There’s also some difference in the Codel implementation which might or
> might not be relevant, specifically in the calculation of “count” after a
> relatively brief exit from dropping state.
>  - Jonathan Morton
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