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  1. JDK
  2. JDK-8215363

needless signals in ForkJoinPool

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 13
    • Component/s: core-libs
    • Labels:
      None

      Description

      (This was previously included in some "miscellaneous" changes picked up in https://bugs.openjdk.java.net/browse/JDK-8214559CR but now broken out separately after backout and resubmission.)

      ForkJoinPool intrinsically oversignals possibly-needed worker threads, but signalling too many workers causes overhead and contention. This oversignalling can be reduced while maintaining liveness.

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              • Assignee:
                martin Martin Buchholz
                Reporter:
                dl Doug Lea
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                • Created:
                  Updated:
                  Resolved: