Performance advisor types and purposes

Two performance advisors are available: the Runtime Performance Advisor and the performance advisor in Tivoli Performance Viewer.

The Runtime Performance Advisor runs in the Java virtual machine (JVM) process of application server; therefore, it does not provide expensive advice. In a stand-alone application server environment, the performance advisor in Tivoli Performance Viewer runs within the application server JVM.

The performance advisor in Tivoli Performance Viewer (TPV) provides advice to help tune systems for optimal performance and provide recommendations on inefficient settings by using collected Performance Monitoring Infrastructure (PMI) data. Obtain the advice by selecting the performance advisor in TPV.

In a Network Deployment environment, the performance advisor in Tivoli Performance Viewer runs within the JVM of the node agent and can provide advice on resources that are more expensive to monitor and analyze. The Tivoli Performance Viewer advisor requires that you enable performance modules, counters, or both.

The following chart shows the differences between the Runtime Performance Advisor and the Tivoli Performance Viewer advisor:
  Runtime Performance Advisor Tivoli Performance Viewer advisor
Start location Application server Tivoli Performance Viewer client
Invocation of tool Administrative console Tivoli Performance Viewer
Output
  • The SystemOut.log file
  • The administrative console
Tivoli Performance Viewer in the administrative console
Frequency of operation Configurable When you select refresh in the Tivoli Performance Viewer administrative console
Types of advice

Performance advice:

  • Object Request Broker (ORB) service thread pools
  • Web container thread pools
  • Connection pool size
  • Persisted session size and time
  • Prepared statement cache size
  • Session cache size
  • Memory leak detection

Performance advice:

  • ORB service thread pools
  • Web container thread pools
  • Connection pool size
  • Persisted session size and time
  • Prepared statement cache size
  • Session cache size
  • Dynamic cache size
  • Java virtual machine (JVM) heap size
  • DB2 Performance Configuration wizard



Subtopics
Runtime Performance Advisor
Related tasks
Obtaining advice from the advisors
Concept topic    

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Last updated: Aug 29, 2010 7:21:45 PM CDT
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