[mrtg] Re: Average's messed up..

Alex van den Bogaerdt alex at slot.hollandcasino.nl
Tue Dec 21 00:36:30 MET 1999

> Is there, however a way to make mrtg not use the 'empty' data points when
> its crunching these sumaries? Or in general, only caculate on data when a
> link was activate?

Is this what you mean:
Link active from 10:00 to 18:00, MRTG time span from 00:00 to 09:20.

If so:

You can't (AFAIK) make MRTG calculate the average from 10:00 to 18:00.
You could tune it a little and at exactly 18:00 MRTG can create a graph
which should be just the right size.  Do this by using XSize, set it to
the correct number of pixels (normally each pixel == 5 minutes).  This
however won't work at other times.

What you could do (if you know the times that the link was active):
Use rrdtool.  Ask "rrdtool graph" to produce these numbers.
Something like "rrdtool graph dummy --start 10:00 --end 18:00 DS: .....
See the manual or the tutorial.

 / alex at slot.hollandcasino.nl                  alex at ergens.op.het.net \
| work                                                         private |
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