2. PERFORMANCE REPORTING ANALYSIS › 2.7 Graphic Analysis › 2.7.2 Storage Graphs

Previous Topic: 2.7.1.7 Workload Velocity and CPU Activity

Next Topic: 2.7.2.1 System Storage Map

2.7.2 Storage Graphs


Managing storage can help ensure that online response and
batch throughput service remain acceptable.  Overcommitment
of total storage frames can lead to dramatic degradation in
system performance as MVS responds to contention for central
and expanded storage frames by increasing demand paging
involving auxiliary storage on disk devices.

These storage graphs will help you understand and report on
the usage of combined central and expanded storage frames by
the various system areas of MVS and the private area.  The
second graph will help you understand the distribution of
active usage of storage among various workloads.

This section discusses the following graphic analyses:

    1 - System Storage Map
    2 - Storage Used by Workload Type-Bar Chart
    3 - Storage Used by Performance Group/Service Class
    4 - Storage Used by Workload Type-Pie Chart