JDK-8048085 : Aborting marking just before remark results in useless additional clearing of the next mark bitmap
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: 8u40,9
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2014-06-25
  • Updated: 2015-01-21
  • Resolved: 2014-07-21
The Version table provides details related to the release that this issue/RFE will be addressed.

Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.

To download the current JDK release, click here.
8u40Fixed 9 b26Fixed
Related Reports
Relates :  
Relates :  
Relates :  
If before a full GC (that is already in the vm operation queue) a GC Remark happens, the VM continues to clear the next bitmap although it has already been cleared when aborting it.

This is additional, needless work. Guard the call to _cm->clearNextBitmap() in ConcurrentMarkThread::run() with the appropriate condition.
Another option