IV00425: NATIVE MEMORY LEAK WHEN A LARGE NUMBER OF DISCRETE THREADS CAUSEGCS IN THE PRESENCE OF CLASS UNLOADING OR USE OF JVMTI

APAR status

• Closed as program error.

Error description

• Error Message: When creating and destroying a large number of
  threads which cause garbage collections that cause class
  unloading, or garbage collections when running with a JVMTI
  agent that has the "can_tag_objects" capability enabled
  
  .
  Stack Trace: N/A
  .
  customer reported 300,000+ threads being created and destroyed
  during their testing
  
  CMVC: sov,180492
  

Local fix

Problem summary

• The problem is caused when an excessive number of threads are
  
  created and destroyed which invoke the Segment Interator and/or
  Object Iterator
  

Problem conclusion

• This defect will be fixed in:
  6.0.0 SR9  FP2
  5.0.0 SR12 FP5
  .
  The JVM has been updated to prevent the memory leak
  

Temporary fix

• n/a
  

Comments

APAR Information

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

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

  IV00482

Fix information

• Fixed component name

  JAVA 5 J9 COMMO

• Fixed component ID

  620500127

Applicable component levels

• R500 PSY

     UP