Using the information in the Group Capacity Report
You can apply a defined capacity limit not only to one logical partition, but to a group of LPARs on the same CEC and manage this group considering the combined defined capacities of all members of the group.
With the group capacity limit, a third restriction to an LPAR is added. Even when an LPAR is not limited by its weight or its defined capacity, it can be limited by the group capacity. The minimum of the following limitations is applied to any partition:
- Defined capacity
- LPAR weights
- Group capacity limit
- Absolute physical hardware capping limit
- Hardware group capping limit (refer to Using the information in the Hardware Group Report for more information).
The Group Capacity Report monitors the available capacity of each defined capacity group and the MSU consumption and actual capping of these groups and of each partition within such a group. It helps you to exploit the flexibility to use as much CPU as needed for short periods of time until the 4 hour rolling MSU average exceeds the defined capacity limit for the whole group.
Field Heading | Meaning |
---|---|
GROUP-CAPACITY NAME | Name of the capacity group. |
GROUP-CAPACITY LIMIT | MSU limit defined for the capacity group. |
PARTITION | Name of the logical partition. |
SYSTEM | Name of the z/OS system. |
MSU DEF | User defined capacity limit. |
MSU ACT | Actual MSU consumption of this partition based on the logical processor effective dispatch time. |
WGT | The partition's weighting of the shared processor resources which is used for WLM Group Capacity decisions. In case of hard capped partitions (see field CAPPING DEF), dashes (---) are displayed. |
CAPPING DEF | The initial capping option of the partition: YES/NO Initially capped partitions (also referred to as hard capped) are excluded from WLM group capacity management. |
CAPPING WLM% | Percentage of time when WLM considers to cap the partition. For more information on WLM capping, refer to topic Workload management and Workload License Charges in z/OS MVS Planning: Workload Management. |
CAPPING ACT% | Percentage of time when capping actually limited the usage of processor resources for the partition. |
MINIMUM ENTITLEMENT | The minimum share of the MSU limit defined for the capacity
group that the partition receives, even if all other partitions within
the capacity group are running high workload. N/A is
displayed for hard capped partitions. |
MAXIMUM ENTITLEMENT | The maximum share of the MSU limit defined for the capacity
group that a partition can receive if all other partitions within
the capacity group are running without workload. N/A is
displayed for hard capped partitions. |