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  1. JDK
  2. JDK-8254739

G1: Optimize evacuation failure for regions with few failed objects

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    • gc
    • b23

    Description

      Eacuation failure with pinned regions often leaves only regions with few live objects.

      Optimize evacuation failure handling for such failed regions.

      One option could be, until a certain threshold, track failed objects on a per object basis, then at fixup time use that list (after sorting) instead of walking all objects.

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          is blocked by

          Enhancement - null JDK-8273626 G1: Factor out concurrent segmented array from G1CardSetAllocator

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          relates to

          Enhancement - null JDK-8276721 G1: Refine G1EvacFailureObjectsSet::iterate

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Enhancement - null JDK-8273309 G1: Handling objects that fail evacuation very slow

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Open

          Enhancement - null JDK-8278917 Use Prev Bitmap for recording evac failed objects

          • P3 - Major loss of function.
          • Resolved

          Enhancement - null JDK-8276148 G1: Support reclaiming memory used in G1EvacFailureObjectsSet

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Enhancement - null JDK-8236594 G1: Provide object pinning

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Closed

          JEP - Java Enhancement Proposal JDK-8276094 JEP 423: Region Pinning for G1

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Closed
          links to

          Commit Commit openjdk/jdk/ed7ecca4

          Review Review openjdk/jdk/5181

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              mli Hamlin Li
              tschatzl Thomas Schatzl
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              Dates

                Created:
                Updated:
                Resolved: