z/OS Performance & Tuning

Objectives
On successful completion of this course, attendees will be able to:

• explain system performance requirements
• explain the role of a performance person
• apply basic MVS tuning
• explain the important WLM considerations
• evaluate a WLM setup
• utilise RMF reports to tune MVS
• define service policies, service classes and classification rules
• describe the mechanisms for managing and balancing any workload in a WLMPlex
• explain the implications of using Workload Managed Batch and Resource Affinity Scheduling
• utilize the latest technology to optimise I/O performance
• tune HSM
• decide on what to monitor
• utilise RMF to tune MVS I/O.

Who Should Attend
This course is suitable for all Systems Programmers and Performance Analysts working in the zSeries Server environment.
Prerequisites
To benefit from this course, participants need familiarity with MVS internal operations. This prerequisite can be met by completing the RSM courses ''z/OS MVS System Fundamentals Workshop - Part 1'' and ''z/OS MVS System Fundamentals Workshop - Part 2''.
Duration
5 days
Course Code
ZPER
Contents




Being a performance person
Tuning - an interactive process; defining tuning objectives; service agreements.


Basic MVS system performance
Parmlib considerations.


Data-in-memory
VLF, LLA and DLF considerations.


Input/output performance



Workload Management Overview
Workload Manager concepts; dialogs in support of WLM; service policies; service classes; classification rules; migration issues.


How WLM works
Goal mode concepts; dispatchable units and enclaves; subsystem Work Manager services; Dynamic Alias Management (for Enterprise Storage Server).


Workload Management Functions
TSO, batch and STC workloads; CICS, IMS, DDF and APPC workloads; non IBM or RYO workloads; DB2 Sysplex Query Parallelism; DB2 stored procedures; HTTP server workloads; UNIX System Services workloads; WLM batch enhancements; WLM Managed Batch (WMB); WLM - JES2 interaction; work classification; Resource Affinity Scheduling;


Input/output performance - how it works



Hardware features
PAVs, FICON & Intelligent Resource Director.


HSM Performance (optional)