Basic z/OS Tuning Using the Workload Manager – ES54GCR

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Course Code: ES54G Brand: IBM Z – Mainframe Category: Systems Skill Level: Intermediate Duration: 36H Modality:CR      Audience

This is an intermediate course for z/OS system programmers, z/OS performance analysts, and z/OS performance administrators new to performance management for their z/OS system.

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Note: ES54 is intended for individuals new to WLM and the z/OS performance area

  Prerequisites

You should:

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  • Understand basic MVS and z/OS operation, such as job flow through JES, job scheduling paging, swapping, dispatching controls, and I/O scheduling

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  • Have a basic knowledge of the purpose of the Workload Manager's function in managing system workloads

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  • Be familiar with using TSO and ISPF to manage data sets and run batch jobs

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  Short Summary

This is an intermediate course for z/OS system programmers, z/OS performance analysts, and z/OS performance administrators new to performance management for their z/OS system.Note:  Overview

Do you need to know how to establish a practical performance management program for your z/OS system? This course is designed for new performance analysts to learn to work with the Workload Manager (WLM) in goal mode. Learn concepts of WLM and performance management in the z/OS system using the WLM.

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Learn how to analyze Resource Monitoring Facility (RMF) reports and implement service definitions using the WLM Interactive System Productivity Facility (ISPF) application. The course uses z/OS hands-on lab exercises to reinforce the concepts and techniques discussed in lecture.

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Hands-on labs

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This course includes hands-on lab exercises. Each student team, working on their own z/OS system, will configure RMF, analyze RMF reports to find bottlenecks, and utilize the WLM dialogs to create goals and classification rules in a service definition that manages a supplied z/OS workload.

  Topic

Day 1

  • Welcome
  • Unit 1 – Tuning methodology
  • Unit 2 – Using SMF and RMF to monitor performance
  • Lab 1 – Introduction to your system
  • Lab 2 – Using RMF Monitor I and Monitor II

Day 2

  • Unit 3 – Performance impacts when running in a shared LPAR environment
  • Unit 4 – Basic system workload management (part 1)
  • Lab 3 – Implementing a WLM environment on z/OS (part 1)

Day 3

  • Unit 4 – Basic system workload management (part 2)
  • Lab 3 – Implementing a WLM environment on z/OS (part 2)

Day 4

  • Unit 5 – WLM commands, internals, and service
  • Lab 4 – Using RMF Monitor III to solve performance problems

Day 5

  • Unit 6 – z/OS DASD performance topics
  • Unit 7 – Tuning processor storage
  • Unit 8 – Miscellaneous performance topics
  • Lab 5 – z/OSMF and performance management

  Objectives

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  • Describe a performance and tuning methodology

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  • Develop a systematic z/OS performance and tuning plan

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  • Describe the factors which could affect the performance of an z/OS system

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  • Use the WLM ISPF application

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  • Describe the components of a service definition

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  • Define workloads and service levels and classification rules

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  • State which z/OS commands affect WLM operation

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  • Identify the major WLM services for z/OS, including enclaves and application environments, and how they are used by DB2, WebSphere, and CICS

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  • Analyze CPU performance when running in a shared LPAR environment

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  • Utilize and monitor zIIP and zAAP specialty engines

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  • Measure and tune z/OS DASD, processor storage, and coupling facility configurations

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  • Explain the functions and facilities of RMF and SMF

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  • Analyze performance bottlenecks using RMF

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  • Use Workload License Charges (WLC), defined capacity and soft capping to manage software costs

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  • Describe advanced z/OS environments that utilize Intelligent Resource Director (IRD), HiperDispatch, z/OSMF Workload Management, and I/O Priority Manager

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  • Use the z/OSMF Workload Management (WLM) task_x000D_
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    • Use Performance Monitoring with z/OSMF

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    • Modify a WLM service definition to meet the requirements for monitoring a specific system workload

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    • Create and customize Monitoring Desktops

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    • Review any issues by using the Monitoring Desktops options displays

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    • Assess the performance of the workloads running on the z/OS

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