Now, there was a whole book on tracy widom that I gave away because it was too hard for me and cannot remember the title of, or maybe it was on something related in control theory...
There's so much activity around interactive vs bulkier traffic (fq_codel's sparse flow optimization being one, l4s being another), as when we try to apply gaussian statistics to networking things it breaks down. There's other misleading indicators we deal with like "cpu usage" when the real binding factors are interrupt response time and running out of cache, that go non-linear, suddenly, but per these bits of math (like the extreme value theorem), have a describable shape... Anyway, BBRv0 came out of princeton as best as I remember, and tracy widom was popular at the time, https://www.google.com/search?channel=fs&sxsrf=ALiCzsayJH-LIf3QMgoTx0GInGUeNvzOeQ:1667228286598&source=univ&tbm=isch&q=tracy+widom+princeton ---------- Forwarded message --------- From: Andrew Mcgregor <[email protected]> Date: Thu, Sep 13, 2018 at 8:18 PM Subject: Re: an alternate statistics To: Dave Taht <[email protected]> That's one such, yes. Turns out, the extreme value theorem is incredibly handy in networking too. Basically, it shows that whenever you are dealing with rates of events exceeding a threshold, there's only a few possible distributions for the rate and size of those events, and that it doesn't matter what the bulk of the distribution is, just whether it has upper and/or lower bounds or not. On Fri, 14 Sep 2018 at 00:53, Dave Taht <[email protected]> wrote: > > https://en.wikipedia.org/wiki/Tracy%E2%80%93Widom_distribution ? > On Thu, Sep 13, 2018 at 7:48 AM Dave Taht <[email protected]> wrote: > > > > ages ago you pointed me at an alternate algebra/statistics thing that > > I totally spacing on this morning. It looked better than guassian... > > ??? > > > > -- > > > > 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 -- Andrew McGregor | SRE | [email protected] | +61 4 1071 2221 -- This song goes out to all the folk that thought Stadia would work: https://www.linkedin.com/posts/dtaht_the-mushroom-song-activity-6981366665607352320-FXtz Dave Täht CEO, TekLibre, LLC _______________________________________________ LibreQoS mailing list [email protected] https://lists.bufferbloat.net/listinfo/libreqos
