5. PROFILE AND TRENDING ANALYSIS › 5.6 Case Studies

5.6 Case Studies

This section presents three case studies that show you how to
apply Profile and Trending Analysis to solve capacity
planning problems that many data processing installations
commonly encounter.

The first case study, Extended Example I/O Workload Analysis,
is an extended example that shows a profile and trending
analysis of I/O growth on a small MVS system.  This study is
typical of studies performed to determine if a machine
upgrade is required to support the future demands of the
current workload.  A complete set of reports, along with
interpretative commentary, is presented with this study.

The second study, Performance Group/Period Workload Tracking,
is an analysis of the number of transactions processed by a
TSO performance group, divided by periods.  This study is
used to determine if the character of the TSO workload is
changing over time.

The third study, JES Spool, views the loading of various
printers on a JES2 system.  This study contrasts the load on
the local printer in the data center with six different
departmental remote printers.

The case studies are presented in the following sections:

 1 - Extended Example I/O Workload Analysis
 2 - Performance Group/Period Workload Tracking
 3 - JES Spool