How the peak four-hour rolling average MSU value is determined

Table 1 shows an example of how the peak four-hour rolling average MSU value is calculated for the combination of products and LPARs shown in Figure 1.

Table 1. Example of calculating the peak utilization based on the peak four-hour rolling average MSU value
Utilization	Hour 1	Hour 2	Hour 3	...	Hour 719	Hour 720
LPAR1: Four-hour rolling average utilization	60	55	50	...	50	45
LPAR2: Four-hour rolling average utilization	70	80	75	...	75	70
z/OS® utilization (LPAR1 + LPAR2)	130	135	125	...	125	115
MQSeries® and IMS™ utilization (in LPAR1 only)	60	55	50	...	50	45
CICS® and DB2® utilization (in LPAR2 only)	70	80	75	...	75	70

The peak interval is the highest utilization determined from the sum of the utilization for all LPARs in which a particular product ran in a given hour. It is not the sum of highest utilization for individual LPARs in which a particular product ran during different hours.

In this example, the peak interval for z/OS is in hour 2. The z/OS utilization value for the month is the sum of the z/OS utilizations in both LPARs during hour 2, or 135.

The peak interval for MQ Series and IMS is in hour 1. Since those products only run in LPAR 1, their utilization value for the month is the value for LPAR 1 in hour 1, or 60.

The peak interval for CICS and DB2 is in hour 2. Since those products only run in LPAR 2, their utilization value for the month is the value for LPAR 2 in hour 2, or 80.