Hi All,
I have a perplexing issue that i can’t seem to figure out from reading the community pages. I am trying to use rrd4j persistence to capture the value of a group item. Group contains 3 items that are reporting power consumption.
When my rrd4j.persist file reads as following:
Strategies { everyMinute : "0 * * * * ?"} Items { Solar_Power* : strategy = everyChange, everyMinute }
The persistence works great and i see the data from all the members of the group. In my chart on the sitemap shows 3 trends for the 3 items. However, i don’t really want that, I just want to see a single trend line for the total (SUM) of the group.
When i change my persistence to
Strategies { everyMinute : "0 * * * * ?" } Items { Solar_Power : strategy = everyChange, everyMinute }
(i.e. NO *) according to the documentation it should store the value of the total, however it stops working. The chart stops working and nothing is displayed.
Group looks like this:
Group:Number:SUM Solar_Power
Items:
Number:Power Shed_Lights_Power (Solar_Power)
Number:Power Irrigation_Power (Solar_Power)
Number:Power Pond_Power (Solar_Power)
Sitemap:
Chart item=Solar_Power period=h refresh=30000
Any help greatly appreciated!