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  1. JDK
  2. JDK-8192899

EnableThreadSMRStatistics has some hot fields

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P4
    • Resolution: Incomplete
    • Affects Version/s: 10
    • Fix Version/s: 12
    • Component/s: hotspot
    • Labels:
    • Subcomponent:
    • CPU:
      generic
    • OS:
      generic

      Description

      False sharing on the cacheline and adjacent cacheline causes 100%
      overhead in extreme benchmark. The atomic inc by itself seems to
      cause ~1% overhead

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          Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-8167108 inconsistent handling of SR_lock can lead to crashes

          • P3 - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8192810 EnableThreadSMRStatistics should be default off in release builds

          • P3 - Major loss of function.
          • Resolved

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              Assignee:
              Unassigned Unassigned
              Reporter:
              dcubed Daniel Daugherty
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                Dates

                Created:
                Updated:
                Resolved: