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BMC

BMC Mainframe: z/OS Performance & Tuning with Workload Manager

The course is developed and delivered by © RSM Technology.

This course gives technical support personnel in a z/OS installation a clear understanding of the tasks involved in effective performance management. It covers conceptual performance issues as well as the significant technical considerations, such as parameters and I/O configurations.

The course also provides a comprehensive overview of the Workload Manager functions. All the key features are described and explained during this course. The course also includes a number of practical online exercises.

As well as covering conceptual performance issues the course concentrates on the significant technical considerations of I/O tuning.

Major release:

BMC Mainframe Infrastructure Platform Training

Good for:

System Programmers

Course Delivery:

Instructor Led | 24 horas

Course Modules

  • What is Performance?
    • What is performance?
    • The performance issues
    • Performance related activities
    • Performance management
    • A transaction
    • Transaction delay time components
    • Measuring delays
    • MVS tuning and the Systems Programmer
    • Three kinds of tuning
    • Corrective tuning
    • Preventive tuning
    • Negative tuning
    • Knowing your system
  • z/OS Data-In-Memory
    • Data spaces and hiperspaces in MVS
    • Data Space & Hiperspace use in MVS
    • VLF, LLA, DLF and Hiperbatch
    • VLF and DLF
    • What is VLF?
    • Setting up VLF
    • VLF macros
    • Example of VLF parameters
    • What is LLA?
    • Running LLA in MVS
    • LLA module staging
    • Example of LLA parameters
    • Data Lookaside Facility and Hiperbatch
    • Using DLF and Hiperbatch
    • The DLF Connect/Disconnect exit
    • Coupling Facility exploitation
    • IBM software that uses Coupling Facility
    • VSAM Record Level Sharing
    • CICS VSAM file accessing applications
  • Input/Output Processing
    • Why I/O processing?
    • What is I/O?
    • MVS support for I/O processing software
    • MVS and I/O processing
    • Application I/O
    • The application program
    • The DD statement
    • Going to the Access Method
    • The Access Method
    • Getting the channel program started
    • EXCP - an IOS Driver
    • IOS 'Front End'
    • Actually starting the I/O
    • The I/O engine at work
    • The Channel Sub-System (CSS)
    • Hardware System Area (HSA)
    • "The I/O Farm"
    • The I/O Interrupt
    • IOS Post processing
    • Back to the Access Method
    • The I/O process from A to Z
    • Starting the I/O
    • Going back from starting the I/O
    • I/O complete
    • Caching concepts
    • Read Hit
    • Write commands
    • Write Hit
    • Read Miss
    • Write Miss
    • Cache modes
    • Review questions - Input/Output processing
  • Hardware I/O Performance
    • What is FICON?
    • FICON features
    • System attachment considerations
    • FICON guidelines
    • The IOSQ time problem
    • Overcoming restrictions
    • Multiple allegiance and Parallel Access Volumes
    • PAV and cache
    • PAV RMF support
    • Managing PAVs
    • What are PAV limitations?
    • Intelligent Resource Director (IRD)
    • IRD LPAR CPU management
    • IRD LPAR CPU management (2)
    • Dynamic Channel Path Management (DCM)
    • DCM requirements
    • DCM definitions and concepts
    • Configuring DCM
    • RMF Channel Path Activity report
    • DCM and the I/O queueing report
    • I/O priority prior to IRD
    • I/O priority queuing
    • WLM I/O priority management
    • UCB & DASD CU I/O priority
    • CSS I/O priority
    • Enabling Channel Subsystem Priority Queuing
    • Review questions
  • RMF Reports for I/O
    • Resource Measurement Facility
    • CACHE - Cache Subsystem Activity reports
    • CHAN - Channel Path Activity report
    • DEVICE - device activity report
    • Monitor I shared DASD
    • Monitor I shared tape activity report
    • FCD - FICON director activity report
    • IOQ - I/O queuing activity report (1)
    • PAGESP -Page/Swap data set activity report
    • PAGING - Paging activity reports
    • VSAM RLS activity by storage class
    • VSAM RLS activity by data set
    • RMF I/O performance exercise
  • Workload Management Overview
    • The Workload Manager (WLM)
    • WLM Goal Mode and Parmlib members
    • WLM concepts; Service Policies
    • Multi-system workload management
    • Workload reporting
    • Building the service definition
    • Service Policy
    • Creating workloads
    • Creating resource groups
    • Creating service classes
    • Goal types
    • Creating Service Classes
    • IBM specified subsystems
    • Work qualifiers
    • Subsystems and work qualifiers
    • Classification Groups
    • System-provided Service Classes
    • Defining service policy overrides
    • Specifying overriding Goals for a Service Class
    • The Service Definition
    • Classification rules for subsystems
    • Implementing WLM
    • Create performance objectives
    • Manuals on WLM
  • How WLM works
    • WLM components
    • WLM Considerations
    • Dispatchable Units (DUs)
    • SRB types & priorities
    • SRB scheduling with IEAMSCHD
    • SRB Enclaves
    • Dispatcher queues
    • Performance Index
    • Donor and receiver determination
    • Dispatching Priority Control
    • Dispatching Priority Assignment
    • INITTMP
    • Swap control
    • Work Requests to WLM
    • Server Topology
    • Monitoring environment - CICS & IMS
    • Enclave management
    • DASD I/O priority management
    • Sysplex I/O Priority Management
    • Parallel Access Volumes (PAV)
    • Policy Adjustment Function
    • Resource Adjustment Function
    • Workload management services
  • Workload Manager Applications
    • TSO workloads
    • Emergency TSO Service Class
    • WLM Batch Initiators
    • Scheduling Environment
    • WLM or JES Initiators?
    • Batch workloadsBatch workload Goals
    • Special Service Classes
    • STC default Service Classes
    • STC Service Class considerations
    • SYSSTC Service Class
    • DB2 Address Spaces
    • DDF enclaves
    • Classification rules for DDF
    • DDF Goal types
    • DB2 Stored Procedures
    • Sysplex Query Parallelism
    • CICS - Types of Goals
    • CICS Region Management Goal
    • CICS Transaction Management Goal
    • Transaction goal rules
    • Unix System Services (USS)
    • Why USS uses WLM
    • UNIX Services fork and spawn function calls
    • USS Service Classes
    • USS Classification rules
    • Definitions for OMVS subsystem type work
  • Understanding RMF Reports
    • Resource Measurement Facility
    • SMF Records
    • Monitor II
    • Monitor III
    • Postprocessor Reports
    • Workload activity report reporting options
    • Workload activity report - Goal mode
    • RMF monitor I service class period report Goal mode
    • Monitor I workload group and service class period report
    • CACHE - Cache subsystem summary report
    • CHAN - Channel path activity report
    • DEVICE - Device activity report
    • Monitor I shared DASD activity
    • Monitor I shared tape activity report
    • FCD - FICON Director activity report
    • IOQ - I/O Queuing activity report
    • HFS - Hierarchical File System global statistics report
    • HFS - Hierarchical File System statistics report
    • OMVS - OMVS kernel activity report
    • PAGESP -Page/Swap data set activity report
    • PAGING - Paging Activity report
    • VSAM RLS activity by storage class
    • VSAM RLS activity by data set
  • zFS Performance
    • USS workloads
    • USS & VLF
    • Environmental variables
    • Cache sizes
    • Resource limit management
    • PARMLIB issues
    • Monitoring USS
    • USS performance tools