I found some more explantions:
First of all, if the setup of the RRD4J database needs to be changed, it looks to me as if the old database has to be deleted in order to let the new config to be used.
I needed to change and clarify my setup.
I’m looking at pricedata which can change every minute, so the .def part was OK. Only a heartbeat of 5 times the step-duration seemed a bit to much, so I change it to 90 seconds
PriceLogger.def=GAUGE,90,0,3,60Saving all data every minute for the complete time (up to 4 weeks) however is not needed. I’ll be looking at data for each minute when looking for the last day. When looking at data for a week 5 minute-steps are OK, when looking at for 4weeks 15 minute steps are OK. Hence the number of steps can be calculated. So my archives are configured like:
PriceLogger.archives=MAX,.5,1,1440:MAX,.5,5,2016:MAX,.5,15,2668When trying to display a specific timeframe, the best archive is used automatically.