IBM Support

PH11905: INCREASED DEPLOYMENT MANAGER STARTUP CAUSED BY INEFFICIENT DATA STRUCTURE

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APAR status

  • Closed as program error.

Error description

  • Inefficient data structure is used to track class names during
    webservice endpoint processing, and that adds considerably
    (up to 20%) to startup time.
    A linked list data structure is being used instead of a hash
    set.
    

Local fix

  • None
    
    Keywords:
    treebuider DMGR deployment manager IM
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server                                      *
    ****************************************************************
    * PROBLEM DESCRIPTION: Inefficiency discovered in deployment   *
    *                      manager startup                         *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    A section of WebSphere Application Server code responsible for
    creating a list of application classes uses a linked list.
    To determine if a class is already added to the list, the
    list must be traversed.
    

Problem conclusion

  • The code has been updated to use a HashSet which will help
    reduce deployment manager startup time.
    
    The fix for this APAR is currently targeted for inclusion in
    fix pack 8.5.5.16 and 9.0.5.1.  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

    PH11905

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-05-08

  • Closed date

    2019-06-24

  • Last modified date

    2019-06-24

  • 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



Document information

More support for: WebSphere Application Server
General

Software version: 850

Reference #: PH11905

Modified date: 24 June 2019