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  1. JDK
  2. JDK-8263495

Gather liveness info in the mark phase of G1 full gc

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Details

    • Enhancement
    • Status: Resolved
    • P4
    • Resolution: Fixed
    • 17
    • 17
    • hotspot
    • gc
    • b15

    Description

      Per-region liveness info in the mark phase of G1 full gc is for several purposes:

      JDK-8262068 needs it to determine whether compaction of a region should be skipped
      JDK-8258431 for a JFR event that prints live set size estimate

      so add this functionality.

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        Issue Links

          blocks

          Enhancement - null JDK-8258431 Provide a JFR event with live set size estimate

          • P3 - Major loss of function.
          • Resolved

          Enhancement - null JDK-8262068 Improve G1 Full GC by skipping compaction for regions with high survival ratio

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

          Enhancement - null JDK-8264818 G1: Improve liveness check for empty pinned regions after full gc marking

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

          Commit Commit openjdk/jdk/8c8d1b31

          Review Review openjdk/jdk/2966

          Activity

            People

              mli Hamlin Li
              mli Hamlin Li
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              Dates

                Created:
                Updated:
                Resolved: