IBM BPM, V8.0.1, All platforms > Tuning > Tuning parameters > Java tuning parameters
Java garbage collection (GC) policy
Garbage collection is the process of freeing unused objects so that portions of the JVM heap can be reused.
The Java™ language specification does not provide explicit delete() or free() byte codes. You must occasionally delete objects that no longer have active references in order to free that space for reuse.
The -Xgcpolicy options control the behavior of the garbage collector, and the default garbage collection policy on platforms with an IBM JVM is optthruput. You can change the GC policy to use a generational concurrent collector to help minimize the time that is spent on any garbage collection pause. Results show that this GC policy generally delivers better performance with a tuned nursery size.
To change the GC policy to gencon, add -Xgcpolicy:gencon to the Generic JVM arguments on the Java Virtual Machine administration panel.
Related concepts:
Java heap sizes