New candidate JEP: 450: Compact Object Headers (Experimental)

Mark Reinhold mark.reinhold at oracle.com
Thu May 4 14:39:16 UTC 2023


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https://openjdk.org/jeps/450

  Summary: Reduce the size of object headers in the HotSpot JVM from
  between 96 and 128 bits down to 64 bits on 64-bit architectures. This
  will reduce heap size, improve deployment density, and increase data
  locality.

- Mark


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