JDK-7117065 : RFE: Improve contended locking support
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: runtime
  • Affected Version: 8
  • Priority: P3
  • Status: Closed
  • Resolution: Not an Issue
  • OS: generic
  • CPU: generic
  • Submitted: 2011-12-01
  • Updated: 2018-01-02
  • Resolved: 2018-01-02
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.

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JDK 11
11Resolved
Related Reports
Relates :  
JDK-8186671 - Use `yield` instruction in SpinPause on linux-aarch64
Relates :  
JDK-8046133 - JEP 143: Improve Contended Locking
Relates :  
JDK-8008406 - Need to backport Dave Dice's locking improvements to JDK 8
Relates :  
JDK-8026423 - PSR: Perf JMS benchmark regression compared to JRockit
Description
Analyze and improve contended locking support in HotSpot.
Comments
The majority of the changes were completed in jdk9. Closing as NAI.
02-01-2018
Should be looked at in 11 if we are going to allocate resources for more "monitors" work; definitely don't need this for 10.
05-04-2017
The combined adaptive spin (bucket #1) or the SpinPause for SPARC (bucket #6) changes are not currently planned for JDK9 so changed the 'Fix Version/s' value to '10'.
19-08-2015
Removed the "duplicates" link to JDK-8008406 since that bug has been closed as a duplicate of JDK-8046133 JEP 143: Improve Contended Locking and JDK-8046133 did not include the combined adaptive spin (bucket #1) or the SpinPause for SPARC (bucket #6) changes.
19-08-2015