Tuning garbage collection with WebSphere Real Time

Using WebSphere® eXtreme Scale with WebSphere Real Time increases consistency and predictability at a cost of performance throughput in comparison to the default garbage collection policy employed in the standard IBM® Java™ SE Runtime Environment (JRE). The cost versus benefit proposition can vary. WebSphere eXtreme Scale creates many temporary objects that are associated with each transaction. These temporary objects deal with requests, responses, log sequences, and sessions. Without WebSphere Real Time, transaction response time can go up to hundreds of milliseconds. However, using WebSphere Real Time with WebSphere eXtreme Scale can increase the efficiency of garbage collection and reduce response time to 10% of the stand-alone configuration response time.