IBM Z9, Planning Manual

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Logical Partition Performance
Contact your IBM service representative for assistance in planning configuration
capacity requirements.
The performance of LPs depends on:
v
The operating systems and their workloads
v
The configuration of the LPs
v
The configuration of the CPC
v
The performance tuning parameters
You can contact an service representative who has access to a proprietary IBM
performance planning tool (LPARCE from CPSTOOLS at WSCVM) to assist you in
this task.
RMF LPAR Management Time Reporting
RMF processor utilization reporting includes LPAR Management Time on the
Partition Data Report. RMF provides information about all shared logical CPs that
remain active for the duration of the reporting interval. RMF can also be run on a
single LP if additional information is required.
There are two types of LPAR management time reporting: time spent managing the
LP, and time spent managing the physical configuration. With LPAR Management
Time reporting, the time used to manage an LP can be separated from the time
used by the workload in an LP.
Partition Effective Dispatch Time
LPAR Management Time
CPU
Utilization
Decreasing LPAR Management Time
Figure 5-7. ETR Increasing with CPU Utilization
5-8
PR/SM Planning Guide