LPAR Clusters workspace

An LPAR cluster is a collection of z/OS images (logical partitions, or LPARs) that are carved from the resources of a single Central Processing Complex (CPC) and are part of a single sysplex. Because the LPAR's resources are all derived from a common pool of resources in the CPC, the resources can be redistributed as needed among the LPARs. This permits the operating system's Workload Manager to move resources from LPARs with less important work to LPARs with more important work when that important work is missing its goals.

The LPAR Clusters workspace assists you in answering the following questions:

  1. What is the reason that this work cannot obtain sufficient processor resource?
  2. Do I have less important work that is meeting or exceeding its service goals? Is the reason that LPARs where this workload is running are obtaining more than their fair share of the processor resource?

This workspace permits you to examine and monitor performance information for the LPARs or clusters associated with a given workload. The workspace contains two charts:

Tables in this workspace provide information about CPC status, LPAR cluster information, and CPC LPARs status. The first two tables provide CPC and Cluster summary information. The CPC Status table also contains information about model capacity IDs and capacity ratings. The default positioning of the capacity columns is at the end of the columns displayed in the CPC Status view. If you deploy Capacity Provisioning Manager or On/Off Capacity on Demand, consider reorganizing the sequence of columns so that these columns appear closer to the beginning of the column sequence.

Note:
Some LPARs cannot easily be associated with a cluster. These are collected under the umbrella cluster labeled "N/A". Some LPAR attributes may not be available or may not apply to one of more of these LPARs. And since "N/A" is not a real cluster, it is not included in the LPARs Clusters view.

The CPC LPARs Status table provides detailed performance information for the LPARs that are configured on the CPC. The CPC LPARs Status table has the following predefined thresholds set:

From the LPAR Cluster table, you can link to the LPARs Assigned to a Cluster workspace.

From the CPC Status table, you can link to the OMEGAMON for MVS - LPAR PR/SM Processor Statistics workspace.

Related topics: