[rrd-users] RRD data base have NaN value

[baranidharan]

Hi all,
           I created RRD database with the step interval 300 seconds, 
heartbeat is 600 seconds. poller updating the RRD database at regular 5 
minutes interval of the time , sometimes poller will update the RRD 
database 9 - 11 minutes interval of the time . while 9-11 minutes  
interval updation the RRD data base have data at some interval of time , 
some interval of time have NaN. Plesase help me why NaN coming instaded 
of data. The sample RRD data base given
below:

 <!-- 2008-12-09 15:15:00 IST / 1228815900 --> <row><v> NaN </v></row>
<!-- 2008-12-09 15:20:00 IST / 1228816200 --> <row><v> NaN </v></row>
<!-- 2008-12-09 15:25:00 IST / 1228816500 --> <row><v> NaN </v></row>
<!-- 2008-12-09 15:30:00 IST / 1228816800 --> <row><v> NaN </v></row>
<!-- 2008-12-09 15:35:00 IST / 1228817100 --> <row><v> NaN </v></row>
<!-- 2008-12-09 15:40:00 IST / 1228817400 --> <row><v> NaN </v></row>
<!-- 2008-12-09 15:45:00 IST / 1228817700 --> <row><v> NaN </v></row>
<!-- 2008-12-09 15:50:00 IST / 1228818000 --> <row><v> NaN </v></row>
<!-- 2008-12-09 15:55:00 IST / 1228818300 --> <row><v> NaN </v></row>
<!-- 2008-12-09 16:00:00 IST / 1228818600 --> <row><v> NaN </v></row>
<!-- 2008-12-09 16:05:00 IST / 1228818900 --> <row><v> 4.0996606324e+06 
</v></row>
<!-- 2008-12-09 16:10:00 IST / 1228819200 --> <row><v> 4.0996606324e+06 
</v></row>
<!-- 2008-12-09 16:15:00 IST / 1228819500 --> <row><v> 4.0996606324e+06 
</v></row>
<!-- 2008-12-09 16:20:00 IST / 1228819800 --> <row><v> 4.0996606324e+06 
</v></row>
<!-- 2008-12-09 16:25:00 IST / 1228820100 --> <row><v> 3.5867704397e+06 
</v></row>
<!-- 2008-12-09 16:30:00 IST / 1228820400 --> <row><v> 3.5867704397e+06 
</v></row>
<!-- 2008-12-09 16:35:00 IST / 1228820700 --> <row><v> 3.5867704397e+06 
</v></row>
<!-- 2008-12-09 16:40:00 IST / 1228821000 --> <row><v> 3.5867704397e+06 
</v></row>
<!-- 2008-12-09 16:45:00 IST / 1228821300 --> <row><v> 3.5867704685e+06 
</v></row>
<!-- 2008-12-09 16:50:00 IST / 1228821600 --> <row><v> 3.5867704685e+06 
</v></row>
<!-- 2008-12-09 16:55:00 IST / 1228822200 --> <row><v> 3.5867704685e+06 
</v></row>
<!-- 2008-12-09 17:00:00 IST / 1228822500 --> <row><v> NaN </v></row>
<!-- 2008-12-09 17:05:00 IST / 1228822800 --> <row><v> NaN </v></row>
<!-- 2008-12-09 17:10:00 IST / 1228823100 --> <row><v> NaN </v></row>
<!-- 2008-12-09 17:15:00 IST / 1228823400 --> <row><v> NaN </v></row>
<!-- 2008-12-09 17:20:00 IST / 1228823700 --> <row><v> NaN </v></row>
<!-- 2008-12-09 17:25:00 IST / 1228824000 --> <row><v> NaN </v></row>
<!-- 2008-12-09 17:30:00 IST / 1228824300 --> <row><v> NaN </v></row>
<!-- 2008-12-09 17:35:00 IST / 1228824600 --> <row><v> NaN </v></row>
<!-- 2008-12-09 17:40:00 IST / 1228824900 --> <row><v> NaN </v></row>
<!-- 2008-12-09 17:45:00 IST / 1228825200 --> <row><v> NaN </v></row>
<!-- 2008-12-09 17:50:00 IST / 1228825500 --> <row><v> NaN </v></row>
<!-- 2008-12-09 17:55:00 IST / 1228825800 --> <row><v> NaN </v></row>
<!-- 2008-12-09 18:00:00 IST / 1228826100 --> <row><v> NaN </v></row>
<!-- 2008-12-09 18:05:00 IST / 1228826400 --> <row><v> NaN </v></row>
<!-- 2008-12-09 18:10:00 IST / 1228826700 --> <row><v> NaN </v></row>
<!-- 2008-12-09 18:15:00 IST / 1228827000 --> <row><v> NaN </v></row>
<!-- 2008-12-09 18:20:00 IST / 1228827300 --> <row><v> NaN </v></row>
<!-- 2008-12-09 18:25:00 IST / 1228827600 --> <row><v> 3.5867704636e+06 
</v></row>

Thanks and Regards
Barani

 


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