Absolute capping

Edit online

Absolute capping provides an optional absolute capacity setting for logical partitions specified in absolute processor capacity (for example, 2.5 processors) in terms of cores. This setting is specified independently by processor type and provides an upper limit on the processor type in the partition as a whole at this capacity.

Note: There are rare and very brief instances where it is possible for the cap value to be exceeded by as much as 3.1%. However, these instances are brief enough that they are not noticeable by any operating system or program and they will not result in the overall cap value being exceeded.

The shared partition's processing weight still dictates the logical partition priority compared to other shared logical partitions.

Absolute capping is most effective for absolute caps higher than what the partition's weight relative to other logical partitions capacity would deliver. In fact, absolute capping is not recommended to be set below what the logical partition's weight capacity would deliver.

Absolute capping is ideal for processor types and Operating Systems that WLM does not manage. It is not meant as a replacement for defined capacity or group capacity for z/OS.