Advisors provide a variety of recommendations that help
improve the performance of your application server.
Before you begin
The advisors provide helpful performance as well as diagnostic
advice about the state of the application server.
About this task
Tuning WebSphere® Application Server is a critical
part of getting the best performance from your website. However, tuning WebSphere Application Server involves analyzing
performance data and determining the optimal server configuration.
This determination requires considerable knowledge about the various
components in the application server and their performance characteristics.
The performance advisors encapsulate this knowledge, analyze the performance
data, and provide configuration recommendations to improve the application
server performance. Therefore, the performance advisors provide a
starting point to the application server tuning process and help you
without requiring that you become an expert.The Runtime Performance
Advisor is extended to also provide diagnostic advice and is now called
the Performance and Diagnostic Advisor. Diagnostic advice provides
useful information regarding the state of the application server.
Diagnostic advice is especially useful when an application is not
functioning as expected, or simply as a means of monitoring the health
of application server.
Procedure
- Decide which performance advisor is needed for the purpose, Performance and Diagnostic Advisor or Tivoli® Performance Viewer
advisor.
- Use the chosen advisor to periodically check for inefficient
settings, and to view recommendations.
- Analyze Performance Monitoring Infrastructure data with
performance advisors.
What to do next
Additionally, you can use the heap monitor
feature to monitor the Java™ Virtual Machine (JVM) heap size of a WebSphere Application Server profile in comparison to pool size. The feature
is available for new WebSphere Application Server
profiles or profiles that are created after you update to the WebSphere Application Server. For existing WebSphere Application Server profiles,
there is a script available to add the feature. See the heapMonitor
script information.