Network traffic plugin?

[Stanley Hopcroft]

Dear Sir,

The development versions of RRDtool contain Jake Brutlags Holt-Winters
based time series forcasting/anomaly detection code.

There is a very good paper by Mr Brutlag that illustrates the utility of
this approach in the triage of _large numbers_ of interface graphs (ISP
or ASP or carrier siituation).

It's quiet easy to integrate RRD tool with H-W prediction into a plugin
(the H-W time series is another RRA).

My experience is that it is not as sensitive as heuristics like 'flows
should be within this range' but because it is adaptive, it is not
deceived by fluctations. (In my case, I have a time series - the output
of a process - that doesnot exhibit periodic fluctation, yet it still
works Ok).

Yours sincerely.

-- 
------------------------------------------------------------------------
Stanley Hopcroft
------------------------------------------------------------------------

'...No man is an island, entire of itself; every man is a piece of the
continent, a part of the main. If a clod be washed away by the sea,
Europe is the less, as well as if a promontory were, as well as if a
manor of thy friend's or of thine own were. Any man's death diminishes
me, because I am involved in mankind; and therefore never send to know
for whom the bell tolls; it tolls for thee...'

from Meditation 17, J Donne.


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