page table memory usage
each partition requires a minimum of 256 megabytes (mb) of system memory to function correctly. when you start creating partitions, the system sets aside 256 mb of contiguous memory for its own use, and allocates another 256 mb of contiguous memory for each 16 gb allocated.
partition page tables are an additional memory requirement for a partition to operate.
the memory used by page tables for a partition is added to the total logical memory size of a partition to determine the total memory requirements for one partition. the partition page table is outside of a partition’s accessible memory. the partition page table must be constructed with contiguous real system memory segments. use the following table to help you keep track of the system’s page table memory usage:
in a full system partition, the operating system uses all of the installed memory; the system does not set aside contiguous memory for its own use.
refer to the ibm hardware management console for pseries installation and operations guide, order number sa38-0590 for more information about how to allocate memory to partitions.