Managing Operations › Exploitation of the zIIP Processor › How to Monitor zIIP Usage for a Service Class

How to Monitor zIIP Usage for a Service Class

Use of the zIIP processor should be planned and monitored through the IBM Resource Management Facility (RMF) Service Class report (WLMGL). This report is based on data taken from the following SMF Record Types:

• SMF Record Type 72 (x48) RMF Workload Activity and Storage Data
• SMF Record Type 79 (x4F) RMF Monitor II Activity

The Service Class report provides information to your capacity planner to determine how much zIIP capacity is needed.

When viewing the RMF Service Class report fields, the following fields in the “APPL %” column are the most important:

CP

Specifies the percentage of work run on a normal CP.

IIP

Specifies the percentage of work run on a zIIP processor.

IIPCP

Specifies the percentage of work eligible for the zIIP processor that WLM redirected to the general processor.

If the zIIP Exploitation feature is activated you will see a percentage of work that corresponds to the PercentRunOnzIIP= attribute in the IIP field.

Some work may be reported in the IIPCP field. This work was zIIP enabled, but was redirected by WLM to the general CP.