Step 2: Choosing a subsystem and specifying an analysis type
About this task
When you have performed Step 1: Selecting and opening buffer pool data files,
the second page of the long-term analysis wizard is displayed: Figure 1. Long-Term Analysis – The Subsystem
and Analysis Type Selection window
Use this page to verify your selection
of bpd files and to specify the type of analysis you want to perform.
The bpd files you selected in the previous step might contain
performance data from different subsystems. However, a meaningful
long-term analysis can only be performed with data from one subsystem.
The DB2 Subsystem group box on this page shows
from which subsystems the various selected bpd files were created.
(This information was acquired when the selected bpd files were preprocessed.)
The
subsystem folder with the most bpd files is opened, and the corresponding
subsystem is preselected from the Subsystem to analyze list.
You can expand or collapse the tree items by clicking the plus sign
(+), respectively the minus sign (-), or by double-clicking the corresponding
tree item.
Use this information to decide from which subsystem
you want you use the data for the long-term analysis.
The Analysis type group box on this page
shows a list of selectable presentation types, with one type being
preselected. The analysis type determines how the information will
be presented in the graphical report.
Use this list to decide about
the analysis type. For the selected type, a brief description and
an illustration of the chart type is shown on this page. You can select
the types in any order to examine them. Viewing the result of a long-term analysis provides
a more detailed description and explanation of the output from these
analysis types.
Select the bpd files you want to use by selecting the appropriate
subsystem from the Subsystem to analyze list.
Under Analysis type, select an appropriate
analysis type.
