PH11905: INCREASED DEPLOYMENT MANAGER STARTUP CAUSED BY INEFFICIENT DATA STRUCTURE

9.0.5.1: WebSphere Application Server traditional Version 9.0.5 Fix Pack 1
9.0.5.2: WebSphere Application Server traditional Version 9.0.5 Fix Pack 2
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
9.0.5.3: WebSphere Application Server traditional Version 9.0.5 Fix Pack 3
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21

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 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

• R850 PSY

     UP

• R900 PSY

     UP