Advanced z/OS Performance: WLM, Sysplex, UNIX Services, Z Systems and z/OSMF

This course gives technical support personnel a clear and detailed understanding of the tasks involved in effective performance management for I/O, Parallel Sysplex, WLM/Intelligent Resoure Director and z/OS UNIX
Not only are the software enhancements explained, but also the hardware aspect of the Speciality engines, such as zIIP, IFL and ICP.
The monitoring of Peformance is covered with SMF System Logger and the z/OSMF Resource Management Tasks.
This course has recently been upgraded and updated to take into account the use of z/OS Management Facility (z/OSMF), which delivers solutions in a task-oriented, web browser-based user interface with integrated user assistance.
The course also includes a number of practical hands-on exercises.

This course is only available ' live over the Internet for exclusive, one-company presentations.

What you will learn

On successful completion of this course you will be able to:

understand the implications of I/O
utilise the latest hardware and software to optimise I/O performance
describe PAVs, HyperPav and SuperPAV
list the new PCIi features
describe in detail the use of the Crypto Express cards and their benefits for security
understand the Flash Express card and its use
understand Hiperdispatch and ZIIPs
understand the speciality engines of IFL and ICP
describe the two-way simultaneous multithreaded (SMT-2) operation
utilise RMF to tune MVS I/O using RMF Reports and Z/OSMF Resource Management Task
understand the hardware configuration for a parallel sysplex, including the Coupling Facility , ICF and XCF Signalling
understand the purpose of, and code the parameters to enable the use of, XCF Transport Classes
allocate Message Buffer space to XCF
interpret the basic information in the RMF XCF reports
understand the different options for implementing the Coupling Facilities
explain how applications access the structures in the Coupling Facility
interpret the basic data in the RMF Coupling Facility reports
describe the dynamic activation of a CF LPAR
discuss the expansion of the Channel Subsystems with additional LCSS and Subschannel sets
implement tuning of z/OS UNIX and increase the performance of zFS
implement the SMF System Logger
Implement WLM Defined Capacity
Use the z/OSMF Resource Management Task.
use the z/OSMF System Status Task
use the z/OSMF Capacity Provisioning Task

Who Should Attend

Experienced mainframe technical support personnel.

Prerequisites

All attendees must have previously attended the RSM course z/OS Performance & Tuning with Workload Manager and z/OSMF or have equivalent experience.

Duration

5 days

Fee (per attendee)

£2450 (ex VAT)

This includes free online 24/7 access to course notes.

Hard copy course notes are available on request from rsmshop@rsm.co.uk

at £50.00 plus carriage per set.

Course Code

UZPE

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 (HAS); "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?; HyperPAV; SuperPAV; Additional LCSS and SubChannel Sets; Flash Express Card; PCIi Features; 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.

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.

Tuning z/OS UNIX

zFS Performance

zFS cache & performance; IOEPRMxx performance parameters; zFS performance data via an API; zFS performance data - zfsadm query; zFS cache - user & metadata; zFS cache - metadata; zFS cache - transaction & log; zFS cache - vnode 5-16; Directory backing cache; zFS I/O by aggregate; SMF records for USS; RMF reporting for USS; zFS Activity Report; zFS Summary Report; RMF Monitor lll reporting for USS.

Hardware Configuration for Parallel Sysplex

Configuration considerations; Our example system; Example system, logical view; Timer configurations; Server Time Protocol; Clock synchronization techniques; CLOCKxx; Switch concepts and terminology; Chained switches; CTCs; CTCs: connections vs paths; CTCS: connections and XCF paths; XCF paths and Operations; Example naming convention; Setting it up - Switch and CHPIDs; S Setting it up - primary and alternate paths; Setting it up - XCF signalling example; Advantages of the naming convention; Example system, a more logical view; Coupling Facility configuration options; Coupling Facility configuration considerations; Coupling Facility configuration comparison; Coupling Facility performance; CFCC: CFLEVEL and feature support; Coupling Facility connection options; Defining the Coupling Facility environment; Coupling Facility Channels (CFCs); CFC connections; CFCs: Paths vs Subchannels; Create a CF LPAR; Coupling Facility links; Types of Coupling Facility links; Create CF Links; Connect LPARs together; Defining CIB Links; Defining CS5 and CL5 links; XCF signalling via the Coupling Facility; The consoles environment; Console configurations; Console names; CONSOLnn; Command Prefix Facility; OSC/ICC; DASD; Migrating your current configuration files.

XCF Signalling

Defining the XCF signalling paths; Signalling path configurations; Not all messages are equal!; Transport classes; Defining the transport classes; Message buffers; Defining the message buffers; Path reconfiguration; RMF: XCF usage by system; RMF: XCF usage by member; RMF: XCF path statistics;

Coupling Facility Management and ICF Engines

HCD: defining the CF and CFCs; CFCs: Paths vs Subchannels; Subchannels; SYNCH vs ASYNCH CF requests; SMSG - SYNCH or ASYNCH?; 'Changed' CF requests; CFRM introduction; CFRM Policy in a CFRM Couple Data Set; Formatting the CFRM Couple Data Sets; Creating a CFRM Policy; Restricting access to IXCMIAPU; Coupling Facilities; IXCMIAPU - defining the Coupling Facilities; Structure considerations; Structure considerations - structure rebuild; Different rebuild processes; User-managed structure rebuild; 'User-Managed'; User-managed structure rebuild threshold; User-Managed Duplex rebuild; Limitations, rules, etc.; System-Managed rebuild process; Structure duplexing; IXCMIAPU - defining the structures; Allocating structures - CFRM vs IXLCONN; IBM product structures; IBM's CF Structure Sizer Tool; Activating the Coupling Facility environment; Maintaining CFRM Policy status; RMF: CF usage - structure summary; CF activity - CF Usage Summary - Structure; RMF: CF usage - storage & processor summaries; RMF: CF Structure Activity - list structures; RMF: CF Structure Activity - lock structures; RMF: CF Structure Activity - cache structures; RMF: CF - Subchannel Activity.

Workload Manager Sysplex Applications

WLM Defined Capacity

Speciality Engines, zIIP, IFL and Hiperdispatch

Hardware cryptography on System Z; Crypto support in z/OS; SSL and Crypto devices; Three types of encryption keys; Clear Key processing; Secure Key processing; Master Keys and Key Data Sets; Protected Key/Wrapping Key; zIIP ( z Intergrated Information Processor); zIIP operation; z/OS parameters that affect the zIIP; zIIP processor workflow; CPU per transaction with zIIPs; HiperDispatch (formerly Vertical CPU management); WLM Affinity Dispatching; Simultaneous Multithreading; SMT with PR/SM; Exploiting SMT with zIIP; New IEAOPTxx parameter to control zIIP MT Mode.