2. PERFORMANCE REPORTING ANALYSIS › 2.7 Graphic Analysis › 2.7.1 CPU Graphs › 2.7.1.6 CPU Busy by Workload Type - Bar Chart

2.7.1.6 CPU Busy by Workload Type - Bar Chart

GRAPHIC RESULTS

This graphic analysis provides a vertical bar chart of the
distribution of processor utilization among major workloads.
Ordinarily you would describe the rules for grouping
particular service classes into certain workloads.  An
example of the method for defining workloads is available in
Section 2.7.6.3. If you do not provide such a method, each
service class will be displayed as a separate workload.

ANALYSIS GUIDELINES

As with the corresponding pie chart described in Section
2.7.1.4, this chart presents a high-level overview for a
major system resource, CPU capacity.  With it you can show
where your leverage to manage utilization is by workload
type.  For example, shifting a workload to another processor
might not relieve a processor bottleneck if its relative
percentage of the total utilization is small.

Because this graph is a bar chart, the displayed CPU
utilization represents the total utilization segmented by
each workload type.  This displayed utilization includes the
uncaptured CPU utilization allocated proportionately to each
workload.

The detailed behavior of workloads and the system influences
that may be affecting them can be further analyzed using the
sysplex analysis reports described in Section 2.8.

SPECIAL CONSIDERATIONS

If you do not provide a workload description, as shown in
Section 2.7.6.3, each service class will be treated as a
separate workload.  Further, if you choose to use "report
service classes" (rather than standard classes), overlapping
resource utilization will tend to overstate actual
utilization. Therefore, this should only be done with a full
understanding of the impact on the resulting analysis.