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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

      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.

        1. 20210902-remove-self-forwards-improvement.png
          143 kB
          Thomas Schatzl
        2. speed.up.iterate.objs.png
          34 kB
          Hamlin Li
        3. speed.up.iterate.objs.txt
          9 kB
          Hamlin Li

            mli Hamlin Li
            tschatzl Thomas Schatzl
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