Hi,
we observed that in the following testcase, the RRA accumulates numbers
with a fractional part, which is undesired for our purpose.
#!/bin/bash
rrdtool create foo.rrd --step 1 DS:foo:GAUGE:120:U:U RRA:LAST:0:1:60;
rrdtool update foo.rrd N:0;
sleep 1;
rrdtool update foo.rrd N:1;
# Show problem
rrdtool dump foo.rrd | grep '\.[1-9]';
How could this be solved so that the RRA only ever contains integers and
does not average over two values?
What's more, the value that gets record in the RRA seems to depend on
the moon phase, or at least the subsecond granularity of bash execution
time and sleep wait time:
$ sh ts
<value> 3.2619000000e-02 </value>
<primary_value> 9.7739700000e-01 </primary_value>
<!-- 2007-12-17 21:34:05 CET / 1197923645 -->
<row><v> 9.7739700000e-01 </v></row>
$ sh ts
<value> 1.6257900000e-01 </value>
<primary_value> 8.4968000000e-01 </primary_value>
<!-- 2007-12-17 21:34:08 CET / 1197923648 -->
<row><v> 8.4968000000e-01 </v></row>
thanks,
Jan
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