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  1. JDK
  2. JDK-8227665

Clearing collection set candidates takes a significant amount of time

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    • Icon: Enhancement Enhancement
    • Resolution: Duplicate
    • Icon: P4 P4
    • tbd
    • 12, 13, 14
    • hotspot
    • gc

      After a mixed gc phase we clear the remembered sets of collection set candidates serially.

      This may take a significant amount of time (BigRAMTester@50G heap@32M regions ~70ms; BigRAMTester@50G heap@1M regions ~800ms) every time at the last mixed gc in a mixed gc phase.

      This started to show up with JDK13 after the refactoring in JDK-8218668 as high "Other" time, but has been a problem since introduction in JDK-8190269.

      Parallelize in some way.

            Unassigned Unassigned
            tschatzl Thomas Schatzl
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