Cheryl Watson’s Tuning Letter

2022 Tuning Letters

Access the 2022 Tuning Letter Downloads

No. 4 (139 pages)

Management Summary
User Experiences and Tips
  • GSE UK Virtual Conference On NOW
  • Free Access to Conference Materials
  • Considerations for Security/Integrity HOLDDATA
  • Understanding CPU Utilization for CF LPARs with Shared Engines
  • Finding Gartner MIPS for z16
  • Performance Insights from DR Testing
  • Finding Archived Redbooks
  • Looking for Data/Experiences
  • Typo in News Article in Tuning Letter 2021 No. 3
Planning for MQ Deep Queues
  • Background
  • How Deep Can You Go?
  • References
  • Summary
Planning for an Upgrade to z16
  • Comparing CPC Capacities
  • Comparison Methodology Considerations
  • MIPS and MSUs
  • Gathering the Required Data
  • References
  • Summary
Using New XCF Metrics to Optimize XCF Buffer Use – Part 2
  • Introduction
  • Life of an XCF Request
  • XCF Outbound Message Resources
  • Optimizing XCF Outbound Resources
  • Helpful Metrics for Analyzing XCF Outbound Resources
  • References
  • Summary
Software Risk Assessment Considerations for Software Deployment
  • Setting the Stage
  • Brief Intro to Software Management on z/OS
  • Risk Assessment Considerations for Software Deployment
  • Deployment Tools
  • A Sample Real World Deployment Process
  • References
  • Summary
News
  • IBM Z Hardware Alerts
  • Red Alerts
  • Preparing for z16
  • Recent APARs
  • News from IBM Techdocs
  • Conferences
Acknowledgments
Cheryl’s List Blog Posts
  • Blog Entries

No. 3 (132 pages)

Management Summary
  • Passing the Baton
  • What’s New in SMF?
  • IOPs – the ‘Shrinking Violets’ of I/O Processing
  • User Experiences and Tips
  • News You Can Use
Building the Next Gen, One Apprentice At a Time
What Is an Apprenticeship?
  • How the Franklin Apprenticeships Program Works 
  • Why Apprenticeships Are Attractive to Employers  
  • Why Apprenticeships Are Attractive to Employees 
  • Next Steps 
  • References 
  • Summary
User Experiences and Tips
  • How Much Additional Capacity Am I Going to Get from a zIIP? 
  • Optimizing zEDC Value with DFSMShsm and TS7700 
  • Enhanced Catalog Sharing (ECS) and HyperSwap  
  • ISPF Tips 
Using New XCF Metrics to Optimize XCF Buffer Use
  • Introduction  
  • A Little Background 
  • How XCF Worked Prior to Transport Class Simplification 
  • How XCF Works When TCS Is Enabled  
  • Concepts Behind New Path Usage Metrics 
  • Configuring MAXMSG Values 
  • References
  • Summary 
Update on LE Non-Executable HEAPS and CICS User Experiences
  • Introduction  
  • How Not to Measure the Effect  
  • Using CICS Statistics  
  • By the Way, Do You Collect CICS Interval Statistics? 
  • CICS and Non-Executable HEAPS Update 
  • Summary 
Optimized RMF Coupling Facility Data Gathering
  • Background
  • CF Hardware Statistics Gathering Changes in z/OS 2.5 
  • Prerequisites  
  • Reference Material  
  • Summary 
News
  • IBM Z Hardware Alerts  
  • Red Alerts  
  • Recent APARs 
  • News from IBM Techdocs 
  • Conferences  
Acknowledgments
Cheryl’s List Blog Posts
  • Blog Entries

No. 2 (97 pages)

Management Summary
A Letter to Management
z/OS 2.5 Second Quarter 2022 Update
  • Changes to z/OS Chargeable Features
  • z/OS Change Tracker
  • z/OS Workload Interaction Correlator
  • References
  • Summary
XCF – A Reliable (But Often Overlooked) Component of Sysplex
  • Introduction
  • Benefits of Monitoring XCF Message Volumes
  • References
  • Summary
User Experiences and Tips
  • Removing Software Products
  • ISPF Search Tips
  • Considerations for DFSMShsm, zEDC, and Encrypted Data Sets
Optimizing DFSORT Use of Z Sort Accelerator
  • Introduction
  • Extracting Z Sort Insights from DFSORT SMF Records
  • Customizing the Sample Job
  • zBNA Z Sort Support
  • References
  • Summary
News
  • IBM Z Hardware Alerts
  • Red Alerts
  • Recent APARs
  • News from IBM Techdocs
  • Conferences
Acknowledgments
Cheryl’s List Blog Posts

No. 1 (140 pages)

Management Summary
IBM’s Latest Mainframe – Meet the z16
  • z16 High Level Summary
  • Technical Details
  • New Functions
  • Performance
  • Software Support
  • Statements of Direction
  • Reference Information
  • Summary
User Experiences and Tips
  • Heads-Up about LE Non-Executable HEAPS and CICS
  • Sort Accelerator User Experiences
  • NO Page Data Sets?
LPARDesign Tool Update
  • Brief Introduction
  • Using LPARDesign
  • Comparing Configurations with LPARDesign Extended
  • Other Related Information
  • References
  • Summary
A Different Way to Define LPAR Weights
  • References
  • Summary
Learning from SMF: Db2 Buffer Pools
  • The Basics of Db2 Buffer Pools
  • Buffer Pools in a nutshell
  • References
Introduction to JES2 Policies
  • Introduction to JES2 Policies
  • JES2 Policy Basics
  • Summary
News
  • IBM Z Hardware Alerts
  • Red Alerts
  • Recent APARs
  • News from IBM Techdocs
  • Conferences
Acknowledgments
Cheryl’s List Blog Posts
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