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Re: [ripe-ttraffic #26335] Updated to-do-list


Mark, others:

Thanks, added to the list.  

If there are more comments, please bring them to the NP meeting.  


> > 3.21  Replace "start_everywhere" by local test for processes
> >       and a connectivity test                                 FG,MS  10/00 
>   Cfengine now does this locally for ttraffic(is what start_everywhere
>   did).
>   TODO: - processes for root (almost done)
>   	- daemonize.pl -> daemonize.c -> cfcron

OK, I'll leave it on the lsit then.

> > 5.8   See if we have to install TB's at reference points      ??
> 	what are we going to do about this?

This is related to 8.2: When the number of boxes grows, measuring along
N^2 might not be the best tactic anymore: not all paths are interesting
and the number of measurements between 2 points has to go down in order to
keep an acceptable time between 2 packets. Instead, one might consider to
measure to a number of well-known points, plus a number of boxes selected
by the host, and leave out the uninteresting paths. 

> > New Products.
> > -------------
> > 6.3   Scores for network perfomance                           ??     2/00
> > 6.5   Code and test prototype of scoring                      ??     
> 	scoring?

Another thing that is on our list for a long time.  Invent a metric that 
gives a score of 0 to (say) 1000 to each path and each box, summarizing
delay, spread in delay and loss over a period.  Make a list with all TB's,
if one improves his connections, the score goes up.

> > Future developments.
> > --------------------
> > 8.5   Investigate if we can measure the throughput of a       ?? 
> >       connection
> 	Van Jacobson has written pathchar, a tool which calculates the
> 	bandwidth w/o actually filling it up.
> 	The tool and a paper are here:
> 	ftp://ftp.ee.lbl.gov/pathchar/

And there are now 2 derivatives of it: pchar and clink, which both seem to
give decent result.   We should discuss this.


Henk

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