What is the recommended maximum heap size for JVM as per SailPoint guidelines?

The recommended maximum heap size for the Java Virtual Machine (JVM) in SailPoint IdentityIQ is 1024m (or 1GB). This value is considered optimal for balancing performance and resource usage in the environment where IdentityIQ operates.

Setting the heap size at this level allows the application to manage memory effectively, supporting the various operations, such as policy enforcement, provisioning, and reporting, without triggering memory-related performance issues. While larger heap sizes can accommodate more data, they can also lead to longer garbage collection pauses, which may negatively impact application performance.

Choosing a smaller heap size, like 512m or 256m, might lead to insufficient memory for application demands, resulting in potential out-of-memory errors during peak usage periods. On the other hand, opting for 2048m would generally be considered excessive for most standard deployments of IdentityIQ, given that it can introduce complexity in memory management and may not provide additional benefits compared to a 1024m setting.

By following the recommended maximum heap size of 1024m, organizations implementing SailPoint IdentityIQ can ensure efficient operation while minimizing potential performance issues associated with improper memory configuration.