[mrtg] Graphing small values (disappear in the month/year graph)

Markus universe at truemetal.org
Wed Jun 2 12:18:23 CEST 2010

Hi all,

I'm using MRTG to graph a state of "ON" of a certain event, and that event
usually lasts only something like 15 to 60 minutes. Also, it happens not
so frequently, so something like every 2-4 days.

The script that feeds the data into MRTG just sends a "1" when the state
is "ON", so MRTG displays a value of 1 for a period of 15 to 60 mins in
the daily graph. When the event is "OFF", the script feeds a "0" to MRTG.

The problem that I am encountering is that the event "disappears" after a
while from the monthly / yearly graphs. I think this is because MRTG is
building an average of the collected values and this average is becoming
"smaller and smaller" for the monthly and yearly graphs over time (I can
confirm that by looking at the logfile) and because of the small value and
short time span results in the events disappearing completely from the
monthly and yearly graphs.

Does anyone have an idea how to solve that?

My config:

Target[something]: `script.sh`
Options[something]: integer, gauge, nobanner, growright, noinfo,
nopercent, nolegend, perhour
MaxBytes[something]: 4
kMG[something]: ,,

Thanks a lot!

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