IJ08001: 30% THROUGHPUT DROP FOR CERTAIN SYNCHRONIZATION WORKLOADS

PH00173: Ship Java 8 SR5 FP20 for WebSphere Application Server traditional and Liberty
PH00176: Ship Java 8 SR5 FP20 for WebSphere Application Server traditional bundled Java 8

APAR status

• Closed as program error.

Error description

• Error Message: N/A
  .
  Stack Trace: N/A
  .
  N/A
  

Local fix

• N/A
  

Problem summary

• For certain synchronization workloads, throughput drops by 30%.
  

Problem conclusion

• The synchronization features in the JVM have been updated to
  restore the drop in throughput.
  .
  This APAR will be fixed in the following Java Releases:
     8    SR5 FP21  (8.0.5.21)
  Except with z/OS where this APAR is fixed in:
     8    SR5 FP22  (8.0.5.22)
  .
  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

• R270 PSY

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