[Cerowrt-devel] qos calculator & paper for htb rate selection

[Dave Taht]

I liked the question they tried to answer, if not their results. :)

As I push a downstream shaper closer to 95% I have been able to get to
where there is sufficient buffering one hop away to where it takes 10s
of seconds or forever for an aqm to drain the result. Your efforts
towards measuring smoothness seemed like a partial start to having
some other trigger to get back minimum queuing, but not quite.

The fact that the 85% number is essentially folklore rather than
science is bothersome. I've spent a lot of time over the last 5 years
researching various models, queue theories, statistical distributions,
and so on, and don't feel like I'm any further better off than I was
when I started. There's always things that look promising (see, for
example "hopf bifurcation" for something I'm trying to understand
currently), other things like alternate statistical distribution
methods, which seem to show a tantalizing hint of working, and they
always peter out...

There are a lot of people that believe in policers, also, and I have
had such bad results with those as to give up. It would be nice to
*prove* that policers didn't work or establish the bounds of their
range, also.

I go back and I read how clearly understood some things could be back
in the 90s, and I envy those people - but I imagine those things were
just as confusing at the time those papers were being written as clear
as they may now seem.

Another paper "sticking with me is:"

https://plus.google.com/u/0/107942175615993706558/posts/gC6oahMETvr

and yet:

This is the best book on bloat I've read yet:
https://plus.google.com/u/0/107942175615993706558/posts/adye5CKrPMF