We are using an easy chart component to show historical data for several tags at a time. The issue we run into is that when selecting e.g. one week in the date range selector, it takes a lot of time before the trends show up in the chart. Understandable since there is a lot of data that needs to be retrieved from the database. If we select one month, our client runs out of memory and we need to restart the client.
Data for the individual tags are stored once every minute. So for one tag, the amount of datapoints during one month is pretty high.
Easy chart showing data for approx. 1 day:
Easy chart loading data when approx. 4 days (taking a long time):
We have tried to lower the historical resolution, but it does not seem to have any significant effect.
Does anyone know how to make the easy chart able to display historical data for 1 year back in time without crashing the client? Are there any options to force the easy chart to only retrieve say 1 datapoint per day if the selected date range is more than 1 month?
Thanks in advance