Enabling memory and CPU capping

Use capping to limit the use of resources by a tenant.

Memory capping

To enable memory capping, specify the value for the capping limit, in gigabytes.

To enable CPU capping, specify a capping type and then specify the value for the capping limit.

Table 1. CPU capping types and values
CPU Capping Type	Description	Values for Capping Limit
LPAR share percentage	The capacity is specified as a percentage of the LPAR share in the general-purpose processor pool.	0.01-999.99
Service unit	The capacity is specified in unweighted CPU service units per second.	1-99,999,999
CP	A number of general-purpose processors (CPs), including numbers with up to two decimal places.	0.01 to 9,999.99
MSU	The capacity is specified as millions of service units per hour.	1-999,999

A workload administrator must have been defined for the domain.

You can enable capping when you create or modify a tenant. Use this procedure as a quick way to control capping.

Select and double-click the Resource Management task from the z/OSMF desktop. If the Resource Management task is not displayed on the desktop, select it from the App Center in the taskbar.
In the Domains table, select a domain.
In the Tenants table, select a tenant.
Click Actions, select Capping, then select CPU or Memory, then Enable .
On the resulting window, supply values.
Click OK to enable capping.

A WLM tenant resource group is created when a tenant is created with capping (or metering) enabled.