[rrd-users] only NaN values

[Folkert van Heusden]

Hi,

I create my .rrd-files like this:

rrdtool create file.rrd --step 300  \
	DS:values:GAUGE:900:U:U  \
	RRA:AVERAGE:0.5:1:2016    \
	RRA:MIN:0.5:1:2016    \
	RRA:MAX:0.5:1:2016    \
	RRA:AVERAGE:0.5:12:744    \
	RRA:MIN:0.5:12:672    \
	RRA:MAX:0.5:12:672    \
	RRA:AVERAGE:0.5:288:730  \
	RRA:MIN:0.5:288:730  \
	RRA:MAX:0.5:288:730  \

Then using this:
rrdtool update file.rrd N:0.32
I add data to it.
This adding data is done multiple times in a 300 second interval and
should be averaged. Also the min/max of that interval should be stored.
Now when it runs for a while, I would expect values to enter it but if I
create a dump of it, I only get 'NaN'.

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE rrd SYSTEM "http://oss.oetiker.ch/rrdtool/rrdtool.dtd">
<!-- Round Robin Database Dump --><rrd> <version> 0003 </version>
        <step> 300 </step> <!-- Seconds -->
        <lastupdate> 1263330962 </lastupdate> <!-- 2010-01-12 22:16:02 CET -->

        <ds>
                <name> values </name>
                <type> GAUGE </type>
                <minimal_heartbeat> 900 </minimal_heartbeat>
                <min> NaN </min>
                <max> NaN </max>

                <!-- PDP Status -->
                <last_ds> 0.003517 </last_ds>
                <value> 3.5330494778e-02 </value>
                <unknown_sec> 52 </unknown_sec>
        </ds>

<!-- Round Robin Archives -->   <rra>
                <cf> AVERAGE </cf>
                <pdp_per_row> 1 </pdp_per_row> <!-- 300 seconds -->

                <params>
                <xff> 5.0000000000e-01 </xff>
                </params>
                <cdp_prep>
                        <ds>
                        <primary_value> 0.0000000000e+00 </primary_value>
                        <secondary_value> 0.0000000000e+00 </secondary_value>
                        <value> NaN </value>
                        <unknown_datapoints> 0 </unknown_datapoints>
                        </ds>
                </cdp_prep>
                <database>
                        <!-- 2010-01-05 22:20:00 CET / 1262726400 --> <row><v> NaN </v></row>
...
                        <!-- 2010-01-12 22:10:00 CET / 1263330600 --> <row><v> NaN </v></row>
                        <!-- 2010-01-12 22:15:00 CET / 1263330900 --> <row><v> NaN </v></row>
                </database>
        </rra>

How can I fix this?


Folkert van Heusden

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