[Cake] Cake not more CPU efficient than HTB+FQ-CoDel (anymore)?

[Jonas Mårtensson]

Well, simplest.qos.help says "Simplest possible configuration: HTB rate
limiter with your qdisc attached" so that is probably also a bit misleading.

/Jonas

On Wed, Apr 11, 2018 at 9:30 PM, Sebastian Moeller <moeller0 at gmx.de> wrote:

> Sorry,
>
> just looked at the code and my recollection is wrong. I could have sworn
> that I purged cake as a shaper from simple.qos when I created
> piece_of_cake, but apparently that was just a fever dream...
>
> Sorry for the noise.
>
>
> > On Apr 11, 2018, at 21:26, Sebastian Moeller <moeller0 at gmx.de> wrote:
> >
> >
> >
> > On April 11, 2018 8:55:12 PM GMT+02:00, "Jonas Mårtensson" <
> martensson.jonas at gmail.com> wrote:
> >> On Wed, Apr 11, 2018 at 7:15 PM, Toke Høiland-Jørgensen <toke at toke.dk>
> >> wrote:
> >>
> >>> Jonathan Morton <chromatix99 at gmail.com> writes:
> >>>
> >>>>> On 11 Apr, 2018, at 6:24 pm, Toke Høiland-Jørgensen <toke at toke.dk>
> >>> wrote:
> >>>>>
> >>>>> So, um, did we cram so many features into Cake that it no longer
> >> uses
> >>>>> less CPU? Can anyone confirm these results?
> >>>>
> >>>> To be sure about this, it seems wise to configure Cake to turn off
> >> as
> >>>> many of the new features as possible. That means selecting
> >> "besteffort
> >>>> flows nonat" mode at least.
> >>>>
> >>>> I forget whether simplest.qos correctly uses the built-in shaper
> >> with
> >>>> Cake, rather than just layering it with HTB as usual. If not, then
> >> of
> >>>> course Cake will use more CPU, and we should be grateful that it's
> >> by
> >>>> a relatively small margin (maybe 15%).
> >>>
> >>> It is definitely using Cake as the shaper; in besteffort mode, but
> >> with
> >>> nat and triple-isolation enabled I think. I'll run another test
> >> tomorrow
> >>> with those disabled.
> >>
> >>
> >> Is there any difference between using simplest.qos and
> >> piece_of_cake.qos
> >> when Cake is used as qdisc?
> >
> > Yes, IIRC simplest.qos with cake as qdisc will use HTB as shaper and
> cake as leaf qdisc, while piece_of_cake.qos will use cake both as shaper
> and leaf qdisc. The former is only useful for comparative testing, for
> actual usage I recommend the later.
> >
> > Best Regards
> >        Sebastian
> >
> >
> >>
> >> /Jonas
> >
> > --
> > Sent from my Android device with K-9 Mail. Please excuse my brevity.
> > _______________________________________________
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> > Cake at lists.bufferbloat.net
> > https://lists.bufferbloat.net/listinfo/cake
>
>
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