PI35314: isAnyTracingEnabled should evaluate object as a precondition the n the primitive boolean type.

8.5.5.5: WebSphere Application Server V8.5.5 Fix Pack 5
8.5.5.6: WebSphere Application Server V8.5.5 Fix Pack 6
8.5.5.7: WebSphere Application Server V8.5.5 Fix Pack 7
8.5.5.8: WebSphere Application Server V8.5.5 Fix Pack 8
8.5.5.9: WebSphere Application Server V8.5.5 Fix Pack 9
8.5.5.10: WebSphere Application Server V8.5.5 Fix Pack 10
8.5.5.11: WebSphere Application Server V8.5.5 Fix Pack 11
8.5.5.12: WebSphere Application Server V8.5.5 Fix Pack 12
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
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

• The technique to use Object instead of boolean for the
  comparison in the isTracingEnabled method of
  TraceComponent.java is targeted  to optimize the Just In
  time compilation by using its runtime assumption framework.
  This optimization is worth 1.5% in throughput
  performance.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server Liberty Profile - Debug/Tracing      *
  ****************************************************************
  * PROBLEM DESCRIPTION: isAnyTracingEnabled should evaluate     *
  *                      object as a precondition then the       *
  *                      primitive boolean type.                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The technique to use Object instead of boolean for the
  comparison in the isTracingEnabled method of TraceComponent.java
  is targeted to optimize the Just In time compilation by using
  its runtime assumption framework.
  This optimization is worth 1.5% in throughput performance.
  

Problem conclusion

• We have changed the condition in TraceComponent.java to check
  the boolean condition with the object comparison in the place of
  the primitive boolean type to allow us to acheive the target
  optimization needed by the underlying assumption framework of
  the JVM.
  
  The fix for this APAR is currently targeted for inclusion in fix
  pack 8.5.5.5.  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

  LIBERTY PROFILE

• Fixed component ID

  5724J0814

Applicable component levels

• R850 PSY

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