z/OS Performance and Tuning

Mainframe Training Overview

This course provides the fundamentals of z/OS performance management for systems programmers and performance analysts. Specific topics will focus on the basics of performance management, resources components that are affected, and the workload manager definitions that will be used to assign resources according to priorities. In addition, exercises related to problem diagnosis and tuning adjustments will be used to illustrate the effects of various decisions.

Mainframe Training Audience

Systems programmers and performance analysts that need a better understanding of performance management, performance metrics, and the means for defining resource distribution using Workload Manager (WLM)

Workstations are needed for this session.

Mainframe Training Prerequisites

z/OS Fundamentals or equivalent knowledge.

Mainframe Training Course duration

5 days

Mainframe Training Course outline

Performance Management Overview

  Define elements of performance tuning

Examine basic queuing models

Interpret results of queuing theory models

System Components of Tuning: Processor

  Evaluate processor power ratings

Examine key processor metrics

Review data gathering methods for processor metrics

System Components of Tuning: Memory

  Review paging/swapping mechanism

Examine real, expanded, and auxiliary storage metrics

Review data gathering methods for storage metrics

System Components of Tuning: I/O

  Review I/O subsystem components

Examine I/O metrics

Review data gathering methods for I/O metrics

Workload Characterization

  Review processes for grouping comparable workloads

Establishing workload objectives

Managing System Resources

  Service class definitions:

          Importance levels

          Execution velocity

          Response time goals

          Performance Index

          Classification rules

Setting exception conditions

          Resource groups

          CPU/storage critical settings

Service coefficients and options

          Service coefficients

          I/O priority management

          Dynamic alias management

Applications environment

          Specifying and managing application environments

          Server limits for application environment

Scheduling environments

          Specifying scheduling environments

          Managing resource states

WLM managed initiators

Intelligent Resource Director

          LPAR CPU Management

          Dynamic Channel Path Management

          Channel Subsystem Priority Queuing

Workload licensing limits

SMF type 99 records

Monitoring and Tuning Systems

  Diagnose various performance problems

Examine tracking mechanisms available through RMF

Review performance reporting and data interpretation

Wintrac Inc.
16523 SW McGwire Ct.
Beaverton OR 97007
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