IJ47751: ASSERTION FAILURE AT PARALLELSCAVENGETASK.CPP:120

APAR status

• Closed as program error.

Error description

• Error Message: j9mm.107 * * ASSERTION FAILED * at
  ParallelScavengeTask.cpp:120: ((false && ((endTime - startTime)
  >= _syncCriticalSectionDuration)))
  .
  Stack Trace: N/A
  .
  

Local fix

Problem summary

• Comparing time intervals measured on different cores might be
  slightly different. Despite clocks being monotonic, they might
  be slightly out of sync. As a result, measuring of intervals
  with delta smaller than time unit might be slightly off. Such
  difference can cause false triggering of assertion.
  

Problem conclusion

• Removed the assertions and adjusted the time calculation to
  prevent overrun of unsigned variable.
  .
  This APAR will be fixed in the following Releases:
  .
  IBM Semeru Runtimes
   17 17.0.9.0
   11 11.0.21.0
  IBM SDK, Java Technology Edition
   8 SR8 FP15 (8.0.8.15)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the available
  maintenance can be found at:
   https://www.ibm.com/support/pages/java-sdk
  

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