From: Dave Taht <dave.taht@gmail.com>
To: Cake List <cake@lists.bufferbloat.net>,
cerowrt-devel@lists.bufferbloat.net
Subject: Re: [Cerowrt-devel] apu2 sqm/htb issue + a minor win for speeding up fq_codel itself
Date: Tue, 4 Sep 2018 14:14:07 -0700 [thread overview]
Message-ID: <CAA93jw4e=1_ke22GGEOm2sHWKxa6ctnj5gt984GKWT7UoGNC+w@mail.gmail.com> (raw)
In-Reply-To: <CAA93jw4oaNeZMF7dqwnM2cSC7HaeV=p-mP_y3jEA5Ao04JXgJQ@mail.gmail.com>
making htb's cburst and burst parameters 64k gets the APU2 up to
where it can shape 900mbits. 3 ksoftirq handlers start getting cpu
time, and we end up 54% idle to achiefe that.
I should really go around running my own old code. I was deeply
involved in sqm when we still had to run at sub 200mbit levels. since
then it's been
mostly tbf (burst 64k) + fq_codel or cake, and me ignoring various bug
reports about it not scaling well enough at higher rates.
On Tue, Sep 4, 2018 at 12:59 PM Dave Taht <dave.taht@gmail.com> wrote:
>
> less than scientifically (via monitoring top) - on the apu2
>
> 100Mbit sqm (htb + fq_codel)
>
> fq_codel_mainline | fq_codel_fast
> idle 78.8 | 83.5 |
> si 20 | 16.1 |
>
> Yea! But:
>
> 900Mbit sqm (htb + fq_codel)
>
> fq_codel_mainline | fq_codel_fast
> idle 74.4 | 74.4 |
> si 25 | 25.1 |
>
> Here: completely bottlenecked on ksoftirqd - and I only get 340Mbits
> out of the 900mbit setting. quantum 96k and burst of 15000. Haven't
> fiddled with higher values yet...
>
>
>
> --
>
> Dave Täht
> CEO, TekLibre, LLC
> http://www.teklibre.com
> Tel: 1-669-226-2619
--
Dave Täht
CEO, TekLibre, LLC
http://www.teklibre.com
Tel: 1-669-226-2619
next prev parent reply other threads:[~2018-09-04 21:14 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-04 19:59 Dave Taht
2018-09-04 21:14 ` Dave Taht [this message]
2018-09-04 21:16 ` Dave Taht
2018-09-06 17:51 ` [Cerowrt-devel] [Cake] " Pete Heist
2018-09-06 18:03 ` Dave Taht
2018-10-03 13:56 ` Mikael Abrahamsson
2018-10-03 14:44 ` Dave Taht
2018-10-03 14:45 ` Dave Taht
2018-10-03 15:30 ` Mikael Abrahamsson
2018-10-03 16:05 ` Dave Taht
2018-10-03 17:43 ` Toke Høiland-Jørgensen
2018-10-03 17:53 ` Dave Taht
2018-10-03 18:32 ` Jonathan Morton
2018-10-03 20:12 ` Toke Høiland-Jørgensen
2018-10-05 12:52 ` Mikael Abrahamsson
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