IJ29729: PERFORMANCE REGRESSION FROM JAVA 8 SR5 FP10 TO JAVA 8 SR5 FP15

APAR status

• Closed as program error.

Error description

• Error Message: Performance regression in Arrays.copyOf
  implementation
  .
  Stack Trace: N/A
  .
  

Local fix

Problem summary

• Performance regression in
  com.ibm.rmi.io.FastPathForCollocated.doCopy() implementation.
  

Problem conclusion

• To enable the fix, please use the system property
  -Dcom.ibm.CORBA.DeepCopyVector=true.
  .
  If both writeObject() and readObject() is present, it invokes
  both. If either of them is absent, it invokes default
  serialization. In the failing case the readObject() method is
  extra to the class/classes involved in
  serialization/de-serialization and hence it takes a longer
  route. This may lead to 45 seconds delay in different kind of
  EJB workflows.
  .
  This APAR will be fixed in the following Java Releases:
     8    SR7 FP5   (8.0.7.5)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the available
  Service Refreshes and Fix Packs can be found at:
             https://www.ibm.com/developerworks/java/jdk/
  

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

  JAVA CLASS LIBS

• Fixed component ID

  620700130

Applicable component levels