Re: [Cake] a little bit of cake testing

[Dave Taht <dave.taht@gmail.com>]

I did a bit of setup on my connection to give me a decent rrul result.
(I was not rate limiting inbound enough) The duration of the initial
load spike is much less pronounced than the fq_codel result. I note
that I have offloads still on, so I imagine fq_codel is getting
tweaked by that....

but ingress gets way out of hand later on in this test. I can make an
argument for decay (count/2) being far too aggressive. In fact, even
count - 2 seemed too much in older testing I had done with other
variants. I would certainly like to get a feel for when and where the
three parts of codel are kicking in in various workloads.

http://www.dslreports.com/speedtest/613646

I really need to get to where I can quickly get to a blog entry on
this stuff, and back to comprehensive, controlled testing.





On Thu, Jun 4, 2015 at 10:11 AM, Dave Taht <dave.taht@gmail.com> wrote:
> My network here is in flux (new modem, signal strength problems, cable
> problems) and toke's testbed is presently doing wifi work, so I did a
> quick mod to fishcake to make it do linux 4.0 (note I am not sure if
> this was a 4.1 or a 4.0 change) - attached. (and we lose a few cake
> options due to me not grokking the new API)
>
> Cake did well on this, but the behavior at the tail end of the test
> was disturbing:
>
> http://www.dslreports.com/speedtest/611312
>
> Need to do some work to emulate the dslreports tests.
>
> And it dropped  LOT more packets than fq_codel did. fq_codel marked 33
> packets for it's result, cake marked 600 and dropped 200, for its.
>
> I did some rrul testing as well, but was fighting with a modem that
> used to get 140Mbits, and now only gets 70mbits, and behaves very
> differently overall with pfifo_fast than i had ever seen before. And
> along the way snapon got upgraded a bit too... sigh...
>
> --
> Dave Täht
> What will it take to vastly improve wifi for everyone?
> https://plus.google.com/u/0/explore/makewififast



-- 
Dave Täht
What will it take to vastly improve wifi for everyone?
https://plus.google.com/u/0/explore/makewififast