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  1. JDK
  2. JDK-8245203

ZGC: Don't track size in ZPhysicalMemoryBacking

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    • Enhancement
    • Resolution: Fixed
    • P4
    • 15
    • 15
    • hotspot
    • gc
    • b27

    Description

      To make it easier to allow for more concurrent commit/uncommit we should not track the backing "size" in ZPhysicalMemoryBacking. Instead we can add the full physical memory range (from 0 to max_capacity) to the list of uncommitted memory at startup. This removes the need to track and update the backing size (which otherwise needs to be properly synchronized).

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