Changing amount of memory allocated to Ignition

There may be scenarios in which the user may need to change the amount of memory allocated to Ignition. One such scenario is if the user wants to scale the amount of memory allocated to Ignition based on the size of their system. A big system may require more than the default of 1024 MB (1 GB), and a smaller system such as an embedded system may have a smaller amount of memory that can be used by Ignition, like 256 MB or 512 MB.

In order to modify the setting for allocated memory in Ignition, the Java wrapper file ignition.conf needs to be edited. This file is located in the data folder of the main Ignition installation folder (usually C:\Program Files\Inductive Automation\Ignition\data if using Windows). The property that needs to be edited is wrapper.java.maxmemory and the value is required to be in MB, and a multiple of 8 (i.e. 1024, 1536). Ignition 32-bit systems are limited to a maximum of 1536, and 64-bit systems can be set well above 2048. After editing and saving the conf file, the Ignition gateway has to be restarted for the memory change to take effect.