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This topic is about Java 10 – Heap Allocation.

JEP 316 – Heap Allocation on Alternative Memory Devices

With this enhancement in Java 10, now user can specify an alternative memory device, like NV-DIMM to HotSpot VM to allocation the java heap space. User need to pass a path to the file system using a new option -XX:AllocateHeapAt.

-XX:AllocateHeapAt=~/etc/heap

This option takes file path and do a memory mapping to achieve the desired result. Other heap flags like -Xmx, -Xms continue to work.

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