Resource sets in Workload Manager

WLM uses resource sets (or rsets) to restrict the processes in a given class to a subset of the system's physical resources. In WLM, the physical resources managed are the memory and the processors. A valid resource set is composed of memory and at least one processor.

Using SMIT a system administrator can define and name resource sets containing a subset of the resources available on the system. Then, using the WLM administration interfaces, root user or a designated superclass administrator can use the name of the resource set as the rset attribute of a WLM class. From then on, every process assigned to this WLM class is dispatched only on one of the processors in the resource set, effectively separating workloads for the CPU resource.

All of the current systems have only one memory domain shared by all the resource sets, so this method does not physically separate workloads in memory.