Using Ignition 7.6.7, various versions of Java 7, on various versions of Windows.
If a long time range (especially some number of days) is selected for the data display of the Easy Chart, the memory and CPU usage goes very high. In some cases the system set with a 5 day interval can only run for a few hours before the CPU is at 100%, the RAM is almost at 100% and then the Ignition clients are unresponsive.
My test system has 8GB RAM, maximum Java heap size in ignition.conf was increased from 2GB to 4GB and I have increased the maximum client memory from 1GB to 2GB with same results. 2GB is the maximum selectable client memory size for Ignition 7.6.7. Naturally we would need more than 8GB RAM on the computer to set it higher anyway.
Are there any recommendations that we can do for a customer that would like to see these large time ranges in the Easy Chart but not run into such large resource usage?