Why and when to perform this task
The Runtime Performance Advisor provides advice to help tune systems for optimal performance and is configured using the WebSphere Application Server administrative console or the wsadmin tool . The Runtime Performance Advisor uses Performance Monitoring Infrastructure (PMI) data to provide recommendations for performance tuning. Running in the Java Virtual Machine (JVM) of the application server, this advisor periodically checks for inefficient settings, and issues recommendations as standard product warning messages. View these recommendations by clicking Troubleshooting > Runtime Messages > Warning in the administrative console. Enabling the Runtime Performance Advisor has minimal system performance impact.Steps for this task
Over time, the advisor might issue differing advice. The differing advice is due to load fluctuations and the run-time state. When differing advice is received, you need to look at all advice and the time period over which it ia issued. Advice is taken during the time that most closely represents the peak production load.
Performance tuning is an iterative process. After applying advice, simulate a production load, update the configuration that is based on the advice, and retest for improved performance. This procedure is continued until optimal performance is achieved.
What to do next
You can enable and disable advice in the Advice Configuration panel. Some advice applies only to certain configurations, and can only be enabled for those configurations. For example, unbounded Object Request Broker (ORB) service thread pool advice is only relevant when the ORB service thread pool is unbounded, and can only be enabled when the ORB thread pool is unbounded. For more information on Advice configuration, see the article, Advice configuration settings.Related tasks
Obtaining performance advice from the performance advisors