PM62772: ABSTRACTOWBBEAN HASHCODE PERFORMANCE IMPROVEMENT

8.0.0.4: WebSphere Application Server V8.0 Fix Pack 4
8.5.0.1: WebSphere Application Server V8.5 Fix Pack 1
8.0.0.5: WebSphere Application Server V8.0 Fix Pack 5
8.5.0.2: WebSphere Application Server V8.5 Fix Pack 2
8.0.0.6: WebSphere Application Server V8.0 Fix Pack 6
8.0.0.7: WebSphere Application Server V8.0 Fix Pack 7
8.0.0.8: WebSphere Application Server V8.0 Fix Pack 8
8.0.0.9: WebSphere Application Server V8.0 Fix Pack 9
8.0.0.10: WebSphere Application Server V8.0 Fix Pack 10
8.0.0.11: WebSphere Application Server V8.0 Fix Pack 11
8.0.0.12: WebSphere Application Server V8.0 Fix Pack 12
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15

APAR status

• Closed as program error.

Error description

• org.apache.webbeans.component.AbstractOwbBean.hashCode() is an
  expensive operation that is called very frequently in the
  Contexts and Dependency Injection (CDI) runtime. Improvement
  in performance of this method is needed for faster evaluation
  of EL expressions that involve CDI beans.
  
  Port OWB-573 to WebSphere Application Server branch of OWB
  Cache previously calculated hashCode to improve performance to
  the original level
  
  We are going to cache the hashCode since it is used millions of
  times per second. Beans are pretty much static once they get
  constructed. So it's easy to cache it and reset the cache to the
  default of 0 on a change which means it should get
  recalculated.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server that leverage Java EE Contexts and   *
  *                  Dependency Injection.                       *
  ****************************************************************
  * PROBLEM DESCRIPTION: EL expressions that involve CDI         *
  *                      beans take longer to evaluate.          *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  org.apache.webbeans.component.AbstractOwbBean.hashCode() is an
  expensive operation that is called very frequently in the
  WebSphere Application Server Contexts and
  Dependency Injection runtime.
  

Problem conclusion

• Improvement in performance of AbstractOwbBean.hashCode()
  method is added for faster evaluation of EL expressions that
  involve CDI beans.
  
  The fix for this APAR is currently targeted for inclusion in
  fix packs 8.0.0.4 snd 8.5.0.1.
  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

  WEBSPHERE APP S

• Fixed component ID

  5724J0800

Applicable component levels

• R800 PSY

     UP

• R850 PSY

     UP