IV73676: JDMPVIEW 'INFO THREAD' COMMAND VERY SLOW ON DUMPS CONTAINING A L ARGE NUMBER OF THREADS

APAR status

• Closed as program error.

Error description

• Error Message: When running the jdmpview "info thread" command
  on a core dump of the IBM JVM the command takes a long time to
  run or never terminates.
  .
  Stack Trace: N/A
  .
  

Local fix

Problem summary

• The jdmpview "info thread" command handled JVM core dumps
  containing large numbers of threads inefficiently. If the number
  of threads was of the order of 10,000 or greater the command
  would not complete in a reasonable amount of time.
  The number of threads within the JVM can be determined from
  other diagnostic tools, for example a javacore.txt file.
  

Problem conclusion

• The "info thread" command has been modified to perform better
  when there were many threads.
  .
  This APAR will be fixed in the following Java Releases:
     7    SR9 FP 10 (7.0.9.10)
     6 R1 SR8 FP7   (6.1.8.7)
     8    SR1 FP10  (8.0.1.10)
  .
  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

  J9 COMMON CODE

• Fixed component ID

  620700127

Applicable component levels

• R260 PSY

     UP

• R270 PSY

     UP