[rrd-users] RRD Graph Data
Alex van den Bogaerdt
alex at vandenbogaerdt.nl
Thu Jun 9 16:17:56 CEST 2016
> Hmmm Alex, got it.
you're responding to Simon's reply. Just to make that clear.
> and my datasources are:
default step size of 300 seconds?
If RRDtool does what it promises, you could set the end time to some time
n*300s, and set the start time to "end-300s". That should give you one
stores rate out of the RRA with each CDP is 1 PDP.
>> What I'm trying to say is that the graph may be showing the average for
>> the previous 5 minute period, while fetch is showing you the average for
>> the previous 30 minutes.
don't know how accurate RRDtool is nowadays but there was a time when
start and/or end times were "massaged" to some other number than one would
expect. When discussed as such, the response was more "don't care" than
"will fix", and that's when I lost my passion.
Different versions had (have?) different problems, so whoever is trying
similar things should be prepared to closely look what *exactly* is
happening, as opposed to how it *should* behave (read: is documented).
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