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  1. JDK
  2. JDK-8048112

G1 Full GC needs to support the case when the very first region is not available

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Details

    • Enhancement
    • Resolution: Fixed
    • P4
    • 9
    • 8u40, 9
    • hotspot
    • gc
    • b26

    Backports

      Description

        When decommitting memory within the heap, it may be possible that the first region of the heap is decommitted as well, and not available for g1 full gc/compaction.

        However the current implementation of G1 full GC hardcodes the first compaction space (ie. the area to compact into) as exactly this first region.

        This constraintt needs to be relaxed to allow JDK-8038423

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            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8051708 G1 Full GC needs to support the case when the very first region is not available

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

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8056663 G1 Full GC needs to support the case when the very first region is not available

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

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8063379 G1 Full GC needs to support the case when the very first region is not available

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

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8070938 G1 Full GC needs to support the case when the very first region is not available

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

            Enhancement - null JDK-8038423 G1: Decommit memory within the heap

            • P3 - Major loss of function.
            • Resolved
            relates to

            Enhancement - null JDK-8049332 G1 full GC does not compact into humongous regions freed in the same collection

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

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                tschatzl Thomas Schatzl
                tschatzl Thomas Schatzl
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                  Created:
                  Updated:
                  Resolved: