[rrd-users] False positives with aberrant behavior detection

[Tobias Oetiker]

Hi Dave,

> It does seem that the current implementation differs from what I
> was using in rrdtool c. 2002.  My recollection was that there was
> the ability to widen the confidence band by a parameter and also to
> have different settings for the upper vs. lower bound offset from
> the forecast value.
>
> BTW, there is another implementation described here:
>    http://www-iepm.slac.stanford.edu/monitoring/forecast/hw.html
>

the implementation has  not changed except that more features have
been added ... note that some of the tunables are only accessible
via rrdtool tune ... (one might consider that to be a non optimal
situation).

cheers
tobi



-- 
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
http://it.oetiker.ch tobi at oetiker.ch ++41 62 775 9902 / sb: -9900