[Bloat] [Make-wifi-fast] The most wonderful video ever about bufferbloat

Bob McMahon bob.mcmahon at broadcom.com
Tue Dec 6 14:17:05 EST 2022


Stuart's analogy seems better to me as it allows people to do something
else while waiting for an under-provisioned resource. And they may decide
that the wait isn't worth it at all. If the constraint moves to "entering
into the store" or "arrival rate to the grocery store doors" then the queue
just builds up in the parking lot vs the cashiers' lines. No real
difference.

Bob

On Tue, Dec 6, 2022 at 10:45 AM Michael Richardson via Make-wifi-fast <
make-wifi-fast at lists.bufferbloat.net> wrote:

>
> Stuart Cheshire via Bloat <bloat at lists.bufferbloat.net> wrote:
>     >> I think the person with the cheetos pulling out a gun and shooting
>     >> everyone in front of him (AQM) would not go down well.
>
>     > Which is why starting with a bad analogy (people waiting in a grocery
>     > store) inevitably leads to bad conclusions.
>
>     > If we want to struggle to make the grocery store analogy work,
> perhaps
>     > we show people checking some grocery store app on their smartphone
>     > before they leave home, and if they see that a long line is beginning
>     > to form they wait until later, when the line is shorter. The
> challenge
>     > is not how to deal with a long queue when it’s there, it is how to
>     > avoid a long queue in the first place.
>
> Maybe if we regard the entire grocery store as the "pipe", then we would
> realize that the trick to reducing checkout lines is to move the constraint
> from exiting, to entering the store :-)
>
> Then the different times you are in the store because you have different
> amounts of shopping to do, etc. and you get txt messages from spouse to
> remember to pick up X, and that somehow is an analogy to the various
> "PowerBoost" cable and LTE/5G systems that provide for inconsistent
> bandwidth.
>
> (There are various pushes to actually do this, as the experience from COVID
> was that having fewer people in the store pleased many people.)
>
>
> --
> Michael Richardson <mcr+IETF at sandelman.ca>, Sandelman Software Works
>  -= IPv6 IoT consulting =-
>
>
>
> _______________________________________________
> Make-wifi-fast mailing list
> Make-wifi-fast at lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/make-wifi-fast

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