rrd 10 minute intervals

I have a custom check that I have integrated into xymon.

The data for the check I want to graph using NCV/RRDtool as COUNTER/DERIVE data (as it is an ever increasing number)

Problem I am having is that the data is only updated every 10 minutes. I configured the graph in /etc/xymon/hobbitgraph.d/somegraph.cfg - you can see I added the --step 600 option.

[sms] TITLE SMS Statistics YAXIS No_SMS DEF:Failures=sms.rrd:Failures:AVERAGE DEF:Successes=sms.rrd:Successes:AVERAGE AREA:Failures#00cccc:Failures:STACK AREA:Successes#FF0000:Successes:STACK COMMENT:\n --step 600 GPRINT:Failures:LAST:Failures \: %5lf%s (cur) GPRINT:Failures:MAX: \: %5.0lf%s (max) GPRINT:Failures:MIN: \: %5.0lf%s (min) GPRINT:Failures:AVERAGE: \: %5.0lf%s (avg)\n GPRINT:Successes:LAST:Successes \: %5.1lf%s (cur) GPRINT:Successes:MAX: \: %5.1lf%s (max) GPRINT:Successes:MIN: \: %5.1lf%s (min) GPRINT:Successes:AVERAGE: \: %5.1lf%s (avg)\n

In the hobbitserver.cfg as well as adding sms=ncv to get the graphing to work - I added:

NCV_sms="*:DERIVE:600"

My script runs every 10 minutes from the hobbitlaunch.d directory.

The data in the rrd file does not tie up though from the rrdtool dump. The last_ds is correct, but the actual value keeps returning NaN

• and hence the graph does not generate.

    <ds>
            <name> Failures </name>
            <type> DERIVE </type>
            <minimal_heartbeat> 600 </minimal_heartbeat>
            <min> 6.0000000000e+02 </min>
            <max> NaN </max>
  
            <!-- PDP Status -->
            <last_ds> 2252 </last_ds>
            <value> NaN </value>
            <unknown_sec> 138 </unknown_sec>
    </ds>

If I decrease the step or the hearbeat to the default of 5 mins, then the graph looks completely wrong.

I would appreciate any thoughts or ideas.

-- Scott Ryan