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  1. JDK
  2. JDK-8292296

Use multiple threads to process ParallelGC deferred updates

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    • Enhancement
    • Resolution: Fixed
    • P4
    • 20
    • 17, 20
    • hotspot
    • gc
    • b17

    Description

      The "Deferred updates" step during full GCs takes a significant fraction of the total compaction time. It should be possible to parallelise this, although care needs to be taken not to introduce regressions if there are no/few large objects to update.

      See here: https://mail.openjdk.org/pipermail/hotspot-gc-dev/2022-August/039905.html

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              ngasson Nick Gasson
              ngasson Nick Gasson
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