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Micro-Partitioning technology allows for multiple partitions to share one physical processor. Partitions using Micro-Partitioning technology are referred to as shared processor partitions. A partition may be defined with a processor capacity as small as 10 processor units. This represents 1/10 of a physical processor. Each processor can be shared by up to 10 shared processor partitions. The shared processor partitions are dispatched and time-sliced on the physical processors that are under control of the hypervisor.

A dedicated processor partition, such as the partitions that are used on POWER4 processor based servers, have an entire processor that is assigned to a partition. These processors are owned by the partition where they are running and are not shared with other partitions. Also, the amount of processing capacity on the partition is limited by the total processing capacity of the number of processors configured in that partition, and it cannot go over this capacity (unless you add or move more processors from another partition to the partition that is using a dynamic LPAR operation).

This test reports the number of shared partitions and dedicated partitions that have been configured on a pSeries server.

Measurement	Description	Measurement Unit	Interpretation
Num_shared_proc	The number of shared partitions currently available in the pSeries server	Number	Each processor can be shared by up to 10 shared processor partitions. To know the names and IDs of the shared partitions on the server, use the detailed diagnosis of this measure.
Num_ded_proc	The number of dedicated partitions currently available in the pSeries server	Number	To know the names and IDs of the dedicated partitions on the server, use the detailed diagnosis of this measure.