G1: Avoid running periodic GC when there is no possiblity to shrink heap

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    • gc

      Periodic GC was introduced by JDK-8212657 to promptly return unused memory to system.

      But under following circumstances, GC is not able to uncommit any memory, so periodic GC can be avoided.

      - Committed heap size already shrunk to MinHeapSize set by command line.
      - Heap free ratio is under MaxHeapFreeRatio.

            Assignee:
            Unassigned
            Reporter:
            Zhengyu Gu
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              Created:
              Updated: