[rrd-users] Rrdtool for counting irregular events

Rafal Gwizdala rafal.gwizdala at gmail.com
Sun May 20 07:48:58 CEST 2012

Guys, thanks  for all your responses
Tobi, I'll definitely try the ABSOLUTE data source
There's one thing more - I'm wondering about my RRAs and the most likely
choice is the AVG aggregation that will give me an average frequency over
larger periods of time. But this is not exactly what I'd like to have - SUM
aggregation would be much better imho for this case because I'm interested
mainly in total number of events per minute/hour/day, not the rate. So even
if I use 5 minute resolution I'd like to see hourly and daily numbers of
events in graphs. I know there's no SUM RRA but do you think adding it
would be reasonable? Or maybe there's some trick to get SUM in effect of
some clever data transformation?


On Sun, May 20, 2012 at 7:20 AM, Tobias Oetiker <tobi at oetiker.ch> wrote:

> Hi Rafal,
> Yesterday Rafal Gwizdala wrote:
> > Hi,
> >
> > Can rrdtool be used for measuring frequency of irregular events? I mean
> the
> > updates would occur in irregular patterns and I'd like to measure the
> > frequency of them / number of occurrences per some base interval.
> if you use
> the ABSOLUTE data source type and rrdtool update whenever you
> detect one (or more events) with the number of events detected, you
> should get what you want.
> choose the step size according the the maximum resolution you want
> to see for the statistics.
> cheers
> tobi
> >
> >
> > Best regards
> > RG
> >
> --
> 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
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