Of curse I have : strategy = everyMinute, restoreOnStartup
Otherwise I can not generate a chart.
Problem is strange, because it is occur from time to time.
Sorry, however the quoted sentence from your older post sounded like you were persisting only every 5 minutes.
I did see many threads complaining about rrd4j, in most of those cases the users did persist non numeric values (not working), did not persist every minute or used the default archives and are wondering why rrd4j does āchangeā some of their persisted values (values are computed in those archives that keep a single value for a period longer then a minute).
InfluxDB plus Grafana looks very good to me as well, however I think the additional load for the needed (2) services isnāt worth it IN MY CASE.
Yes, previously I experimented with every 5min, but I have problems with charts, so I have back to everyminute strategy. My default persistence is mapDb, because I use it for the rest of items.
I have checked with Habmin and values are stored correctly. Errors occur when I try to read the value, but not always.
Sorry, canāt tel since Iām on OH2.
Did some test regarding .historicState and .deltaSince on my rrd4j db and saw your reported problems as well. Canāt tell why I got no result in some cases.