WebSphere Application Server Network Deployment, Version 6.0.x     Operating Systems: AIX, HP-UX, Linux, Solaris, Windows

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 the article, Using the Runtime Performance Advisor.

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

Configuration tab

Enable Runtime Performance Advisor

Specifies whether the Runtime Performance Advisor runs on the server startup.

The Runtime Performance Advisor requires that the Performance Monitoring Infrastructure (PMI) be enabled. It does not require that individual counters be enabled. When a counter that is needed by the Runtime Performance Advisor is not enabled, the Runtime Performance Advisor enables it automatically. When disabling the Runtime Performance Advisor, you might want to disable Performance Monitoring Infrastructure (PMI) or the counters that Runtime Performance Advisor enabled. The following counters might be enabled by the Runtime Performance Advisor:
  • 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

Specifies the length of time over which data is taken for this advice.

PMI data is taken over an interval of time and averaged to provide advice. The calculation interval specifies the length of time over which data is taken for this advice. Details within the advice messages display as averages over this interval.

Maximum warning sequence

The maximum warning sequence refers to the number of consecutive warnings that are issued before the threshold is relaxed.

For example, if the maximum warning sequence is set to 3, the advisor only sends three warnings to indicate that the prepared statement cache is overflowing. After three warnings, 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 specific configuration of the system.

Runtime tab

Restart

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 or advice.

Enable automatic heap dump collection

Specifies whether the Runtime Performance Advisor automatically generates heap dumps for post analysis when suspicious memory activity is detected.

Enable Runtime Performance Advisor

Specifies whether the Runtime Performance Advisor runs on the server startup.

The Runtime Performance Advisor requires that the Performance Monitoring Infrastructure (PMI) be enabled. It does not require that individual counters be enabled. When a counter that is needed by the Runtime Performance Advisor is not enabled, the Runtime Performance Advisor enables it automatically. When disabling the Runtime Performance Advisor, you might want to disable Performance Monitoring Infrastructure (PMI) or the counters that Runtime Performance Advisor enabled. The following counters might be enabled by the Runtime Performance Advisor:
  • 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

Specifies the length of time over which data is taken for this advice.

PMI data is taken over an interval of time and averaged to provide advice. The calculation interval specifies the length of time over which data is taken for this advice. Details within the advice messages display as averages over this interval.

Maximum warning sequence

The maximum warning sequence refers to the number of consecutive warnings that are issued before the threshold is relaxed.

For example, if the maximum warning sequence is set to 3, the advisor only sends three warnings to indicate that the prepared statement cache is overflowing. After three warnings, 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 specific configuration of the system.

Reference topic    

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Last updated: Mar 17, 2005 4:28:29 AM CST
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