IBM Support

PM58769: SMALL PERFORMANCE DEGREDATION with java.util.logging.Logger.isLoggable method

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APAR status

  • Closed as program error.

Error description

  • Performance degredation that is neglible in the overall
    WebSphere Application Server, but could be an important impact
    in some cases where components, such as business flows and
    processes, are measuring on a smaller scale.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users IBM WebSphere Application Server  *
    *                  V8.0                                        *
    ****************************************************************
    * PROBLEM DESCRIPTION: WebSphere Application Server stack      *
    *                      products that have components using     *
    *                      java.util.logging.Logger.isLoggable     *
    *                      method as a trace guard might           *
    *                      notice a degredation in performance.    *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    Internal logger implementation overrides the isLoggable method
    which adds a slight overhead.  When measured on a smaller
    scale, a degredation can be observed.  Internal WebSphere
    Application Server components are not impacted because there
    is an internal guard in place.
    

Problem conclusion

  • The internal guard has been applied such that it is invoked
    when external callers invoke the
    java.util.logging.Logger.isLoggable method to counteract
    the performance degredation.
    
    The fix for this APAR is currently targeted for inclusion in
    fix pack 8.0.0.4.  Please refer to the Recommended Updates
    page for delivery information:
    http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM58769

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-02-22

  • Closed date

    2012-04-25

  • Last modified date

    2012-04-25

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    WEBS APP SERV N

  • Fixed component ID

    5724H8800

Applicable component levels

  • R800 PSY

       UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
28 October 2021