Virtual-extension portion of shared memory

The virtual-extension portion of shared memory contains additional virtual segments and virtual-extension segments.

Virtual-extension segments contain thread heaps for DataBlade modules and user-defined routines that run in user-defined virtual processors.

The EXTSHMADD configuration parameter sets the size of virtual-extension segments. The SHMADD and SHMTOTAL configuration parameters apply to the virtual-extension portion of shared memory, just as they do to the other portions of shared memory.

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