Administration guide > Tune and performance



Use WebSphere Real Time

Use 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.


Parent topic:

Tune and performance


Related concepts

Operating systems and network tuning

Plan for network ports

ORB properties and file descriptor settings

JVM tuning for WebSphere eXtreme Scale


Related tasks

Configure failover detection

Tune the dynamic cache provider

Tune the cache sizing agent for accurate memory consumption estimates

Related reference

Operational checklist