can we change how Averages are calculated?

[rdumont]

Can we change how Averages are calculated? Our services are disabled from 9pm to 7am weekdays and different hours on the weekend. The Averages seem to ignore that fact, can we alter how the Averages are calculated? I've attached a screen shot showing the Averages.

[mcapra]

If you are referring to the Avg: value displayed for each set on the bottom, there isn't a very good way to modify how this is calculated without altering some source files.

The files in question are located at:

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/usr/local/nagiosxi/html/includes/components/graphexplorer/templates

[rdumont]

yeah i'd rather not start changing the files. Would it be fair to say that the averages will only correctly in a 24X7 environment?

[rkennedy]

Is your check period set to 24x7 or only for the certain time range you mentioned?

[rdumont]

The time period is set according to our custom schedule.

[mcapra]

I would be interested in seeing the data stored for this service's RRD file. I'm not totally convinced that the average is being incorrectly calculated, but seeing the data being referenced will answer that question definitively.

In the following path:

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/usr/local/nagios/share/perfdata/<hostname>/

You should see a .rrd file with the name of the service check. Do the following command on that file (with the output 40254_test.xml) and share the resulting file's contents:

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rrdtool dump __<service_name>.rrd 40254_test.xml

If i'm understanding your configuration correctly, the .rrd file in question will probably be located at somewhere similar to (but not exactly): /usr/local/nagios/share/perfdata/ALTA2.0/__ALTA2_Staging_-_Examine_Mortgage_Synthetic_tx.rrd

[rdumont]

thanks for the reply, please find the rrd file attached.

[mcapra]

I did some sims with the data, and the answer to this question:

Would it be fair to say that the averages will only correctly in a 24X7 environment?

Is yes I believe. The logic on the back-end properly adds up all the known values provided by the RRD, but in terms of assessing "how many data points do I have", it also counts the "null" or "NaN" values as a data point. You will have many of these null entries when you have active checks disabled I imagine. I have filed a bug report for this issue (Internal ID 9611).