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JR48844: HIGH CPU USAGE AND INEFFICIENT BEHAVIOR WHEN USING REST APIs THAT USE THE DATATYPEFACTORY CLASS.

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APAR status

  • Closed as program error.

Error description

  • There are performance issues, specifically high CPU usage,
    that occur with certain REST APIs such as TaskSocialResource,
    which uses the newInstance method on the
    javax.xml.datatype.DatatypeFactory class.
    
    The following REST APIs are noted to have performance issues:
    
    v1/process/<instance-id>?action=update
    v1/task/<task-id>?action=update
    v1/performance/query
    v1/social/instance/<instance-id>/stream
    v1/social/task/<task-id>/stream
    

Local fix

  • N/A
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  IBM Business Process Manager V8.0.1.0       *
    *                  Advanced, Standard, and Express.            *
    ****************************************************************
    * PROBLEM DESCRIPTION: High CPU usage and inefficient          *
    *                      behavior might result from using REST   *
    *                      APIs that use the newInstance method    *
    *                      on the                                  *
    *                      javax.xml.datatype.DatatypeFactory      *
    *                      class.                                  *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    IBM BPM REST APIs that use the
    javax.xml.datatype.DatatypeFactory.newInstance() method could
    experience performance issues if they are called frequently.
    The javax.xml.datatype.DatatypeFactory.newInstance() is
    inefficient because it reads classes from the file system on
    every request.
    

Problem conclusion

  • A fix is available that reduces the number of calls to the
    javax.xml.datatype.DatatypeFactory.newInstance() method.
    
    On Fix Central (http://www.ibm.com/support/fixcentral), search
    for JR48844:
    
    1.Select the product group, product, installed version, and
    platform, and click Continue.
    2.Select APAR or SPR, enter JR48844, and click Continue.
    
    When downloading fix packages, ensure that you also download
    the readme file for each fix. Review each readme file for
    additional installation instructions and information about the
    fix.
    

Temporary fix

Comments

APAR Information

  • APAR number

    JR48844

  • Reported component name

    BPM ADVANCED

  • Reported component ID

    5725C9400

  • Reported release

    801

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-12-16

  • Closed date

    2014-02-14

  • Last modified date

    2014-02-14

  • 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

    BPM ADVANCED

  • Fixed component ID

    5725C9400

Applicable component levels

  • R800 PSY

       UP

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSFTN5","label":"IBM Business Process Manager Advanced"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.0.1","Edition":"","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
14 February 2014