[Version 5.0.2 and later]Runtime Performance Advisor configuration settings

Use this page to specify settings for the Runtime Performance Advisor.

For more information on how to use the Runtime Performance Advisor, see Using the Runtime Performance Advisor.

To view this administrative page, click Servers > Application Servers > server_name > Runtime Performance Advisor Configuration.

Configuration tab

Enable Runtime Performance Advisor
Specifies whether the Runtime Performance Advisor will run on server startup.

The Runtime Performance Advisor (RPA) requires that the Performance Monitoring Service be enabled. It does not require that individual counters be enabled. When a counter that is needed by RPA is not enabled, RPA will enable it automatically. When disabling the Runtime Performance Advisor the user may want to disable the PMI Service or the counters that RPA enabled. The following counters may be enabled by RPA:

  • ThreadPools (module)
    • Web Container (module)
      • Pool Size
      • Active Threads
    • Object Request Broker (module)
      • Pool Size
      • Active Threads
  • JDBC Connection Pools (module)
    • Pool Size
    • Percent used
    • Prepared Statement Discards
  • Servlet Session Manager (module)
    • External Read Size
    • External Write Size
    • External Read Time
    • External Write Time
    • No Room For New Session
  • System Data (module)
    • CPU Utilization
    • Free Memory

Calculation Interval
PMI data is taken over an interval of time and averaged to provide advice. The calculation interval specifies the length of the time over which data is taken for this advice. Details within the advice messages will appear as averages over this interval.
Maximum warning sequence
The maximum warning sequence refers to the number of consecutive warnings issued before the threshold is relaxed.

For example, if the maximum warning sequence is set to 3, then the advisor only sends three warnings to indicate that the prepared statement cache is overflowing. After that, a new alert is only issued if the rate of discards exceeds the new threshold setting.

Number of processors
Specifies the number of processors on the server.

This setting is critical to ensure accurate advice for the system's specific configuration.

Runtime tab

Enable Runtime Performance Advisor
Starts the Runtime Performance Advisor on the current server.

The Runtime Performance Advisor (RPA) requires that the Performance Monitoring Service be enabled. It does not require that individual counters be enabled. When a counter that is needed by RPA is not enabled, RPA will enable it automatically. When disabling the Runtime Performance Advisor the user may want to disable the PMI Service or the counters that RPA enabled. The following counters may be enabled by RPA:

  • ThreadPools (module)
    • Web Container (module)
      • Pool Size
      • Active Threads
    • Object Request Broker (module)
      • Pool Size
      • Active Threads
  • JDBC Connection Pools (module)
    • Pool Size
    • Percent used
    • Prepared Statement Discards
  • Servlet Session Manager (module)
    • External Read Size
    • External Write Size
    • External Read Time
    • External Write Time
    • No Room For New Session
  • System Data (module)
    • CPU Utilization
    • Free Memory

Calculation Interval
PMI data is taken over an interval of time and averaged to provide advice. The calculation interval specifies the length of the time over which data is taken for this advice. Details within the advice messages will appear as averages over this interval.
Maximum warning sequence
The maximum warning sequence refers to the number of consecutive warnings issued before the threshold is relaxed.

For example, if the maximum warning sequence is set to 3, then the advisor only sends three warnings to indicate that the prepared statement cache is overflowing. After that, a new alert is only issued if the rate of discards exceeds the new threshold setting.

Number of processors
Specifies the number of processors on the server.

This setting is critical to ensure accurate advice for the system's specific configuration.

Restart button
Selecting Restart on the Runtime tab reinitializes the Runtime Performance Advisor using the last information saved to disk. Note that this action also resets the state of the Runtime Performance Advisor. For example, the current warning sequence is reset to zero for each recommendation/advice.

Related tasks
Administrative console buttons
Administrative console scope settings
Administrative console filter settings
Administrative console preference settings



Searchable topic ID:   uprf_prfadvconfig
Last updated: Jun 21, 2007 4:55:42 PM CDT    WebSphere Application Server Network Deployment, Version 5.0.2
http://publib.boulder.ibm.com/infocenter/wasinfo/index.jsp?topic=/com.ibm.websphere.nd.doc/info/ae/ae/uprf_prfadvconfig.html

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