IZ81234: NEW FUNCTION: JIT sampling thread no longer disabled in Full Speed Debug Mode

APAR status

• Closed as program error.

Error description

Local fix

• N/A
  

Problem summary

• The Health Center requires the JIT sampling thread to be active
  in order to produce method profiles. Up until Java 6 SR8, the
  JIT
  disables the sampling thread under some circumstances that puts
  the JIT into the so called "Full Speed Debug" mode. Examples of
  such cases include the use of debuggers (such as JDWP) or
  monitoring tools (such as Wily Introscope or Mercury). In these
  cases Health Center was not able show any method profiling
  information.
  Starting with Java 6 SR8 the JIT sampling  thread will no longer
  be disabled in Full Speed Debug mode.
  

Problem conclusion

• JIT sampling thread not disabled in Full Speed Debug Mode
  
  This new function will be available in:
  6.0.0 SR8
  5.0.0 SR12
  

Temporary fix

• N/A
  

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  IZ74536

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  JAVA 5 JIT

• Fixed component ID

  620500124

Applicable component levels

• R500 PSN

     UP