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Introduction:
The introduction
of Workload Manager goal mode in OS/390 version 5 alters the
way that OS/390 performance tuning is achieved. Since OS/390
is extensively used as a platform for an enterprise's
production applications, performance is an issue of major
significance. OS/390 tuning entails a balancing of the
consumption of available resources (storage, CPU and I/O
capacity) against the installation's desired ends
(throughput). SRM uses swapping, page stealing and
dispatching priority adjustment to achieve performance
objectives.
This course focuses on the changes in performance tuning
beginning with OS/390 version 5.1, while providing brief
reviews of the theory of tuning in prior releases. The
course examines in detail the effects of WLM goal mode.
Using output from the Resource Measurement Facility (RMF),
the student will learn to determine when the system is
behaving according to plan and how to adjust it to meet
installation tuning goals.
Audience: This course is intended for systems
programmers and performance analysts responsible for
measurement and tuning of OS/390 systems at version 5.1 or
later.
Objectives: On completion of this course, the student
should be able to:
- change existing IPS and
OPT parameters to exploit WLM goal mode operation
- characterize your
installation's work based on service usage and your
business requirements
- classify your work into
service classes using the new workload classification
rules
- use RMF reports to find
opportunities to improve system performance and measure
the success of changes to system performance
parameters
- interpret the new
workload manager reports provided by RMF
Prerequisites: Experience tuning MVS with a prior version of
SRM.
Duration:
This course is
3 days long.
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