2. PERFORMANCE REPORTING ANALYSIS › 2.7 Graphic Analysis › 2.7.2 Storage Graphs › 2.7.2.3 Storage Used by Performance Group/Svc Class

2.7.2.3 Storage Used by Performance Group/Svc Class

GRAPHIC RESULTS

This graphic analysis provides a vertical bar chart of total
storage frames used by all or selected performance groups or
service classes.

ANALYSIS GUIDELINES

Total storage includes both central and expanded frames.
This chart can help you understand what performance groups or
service classes are your major consumers of storage frames.
It can also help you determine if storage usage by a
competing group or class appears correlated with a period
when other measurements reported during that same period were
degraded.

You can analyze memory use further using the Real Storage
Management analysis reports described in Section 2.2. Virtual
storage allocation patterns can have an effect on processor
storage usage.  These can be analyzed using the Virtual
Storage Management analysis reports found in Section 2.5.
Each of these chapters can help you understand and manage
memory use by particular workloads.

SPECIAL CONSIDERATIONS

If there are a lot of performance groups or service classes
defined, there may be so many unique categories that analysis
may prove difficult.  If such is the case, you might want to
utilize the "Storage Used by Workload" analysis described in
Section 2.7.2.2, or restrict your analysis to selected groups
or classes using the either the data selection facilities
provided on the primary inquiry screen, or the global data
selection exit on the extended options screen.