Cheryl Watson’s Tuning Letter

2018 Tuning Letters

Access the 2018 Tuning Letter Downloads

No. 4 (134 pages)

Management Summary
Changes at Watson & Walker
User Experiences and Tips
  • Using DFSORT to Extract SMF Records
  • Service Units for zIIPs
  • zSecure Performance Tip
Asynchronous CF Duplexing
  • Recap of System-Managed Duplexing
  • Summary of Db2 Locking
  • How Synchronous System-Managed Duplexing Works
  • Asynchronous System-Managed Duplexing
  • How Asynchronous System-Managed Duplexing Works
  • Asynchronous System-Managed Duplexing Performance
  • Implementing Asynchronous System-Managed Duplexing
  • Nedbank’s Experience With Asynchronous Duplexing
  • Prerequisites
  • References
  • Summary
zHyperWrite User Experience
  • Introduction to AIB Environment
  • Experiences With zHyperWrite
  • Impact on Db2 Performance
  • Impact of IMS Performance
  • Other Observations
  • Future Plans for zHyperWrite Exploitation
  • Summary
Optimizing Your HSM CPU Consumption
  • Getting Insight Into HSM Activity and CPU Consumption
  • CPU-Related HSM Enhancements and tips
  • Minimizing Peak HSM Enhancements and Tips
  • Reduce Recall Thrashing
  • Fast Subsequent Migration
  • On Demand Migration
  • Consolidate to a Single Migration Tier
  • zEDC
  • HSM As Data Set Manager, Not Data Set Move
  • Miscellaneous Other HSM Tips
  • References
  • Summary
COBOL V6 Compiler Tips
  • References
  • Summary
News
  • Red Alerts
  • Recent APARs
  • News from Techdocs
  • Social Media
  • Publications
  • Events / Conferences
Acknowledgments
  • Blog Entries
Cheryl’s List Blog Posts
  • Blog Entries

No. 3 (134 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
User Experiences and Tips
  • High CPU Times in MQ CHIN Address Space
  • Meltdown Mania
  • Reducing z/OSMF Startup Time
IBM Container Pricing
  • The DevTest Container Solution
  • IBM’s New New Application Solution Offering
  • References
  • Summary
Customer Sub-Capacity CPC Experience
  • Background
  • Selecting the ‘Right’ Target CPC
  • Was the z14 523 the Right Choice?
  • References
  • Summary
Customer Experience with Loaner CP Trial
  • Background
  • The IBM CP LOANER Program
  • HUK-COBURG’s Experience
  • References
  • Summary
Knowledge Center, Your New Old Friend
  • Level Setting
  • Using Knowledge Center
  • References
  • Summary
News
  • Red Alerts
  • Recent APARs
  • News from Techdocs
  • Social Media
  • Publications
  • Events / Conferences
Acknowledgments
Cheryl’s List Blog Posts
  • Blog Entries

No. 2 (143 pages)

Management Summary
Welcome to Brenda White
What Is Happening With IBM’s Websites?
User Experiences and Tips
  • Reducing COBOL Compile Times
  • More Slower Versus Fewer Faster
  • IDCAMS REPRO Performance Issues
  • High Overhead OAM Security Exit
IBM z14 ZR1 Overview
  • Introduction
  • References
  • Summary
Introduction to Transparent Cloud Tiering
  • The Cost of Data Management
  • Along Came Cloud Object Storage
  • Transparent Cloud Tiering
  • What’s Available Today?
  • FAQs
  • Prerequisites
  • References
  • Summary
Hyperdrive Your Disk Writes With zHyperWrite
  • Introduction
  • Performance Benefits of zHyperWrite
  • Enabling zHyperWrite
  • Definition/Configuration Considerations
  • Monitoring zHyperWrite
  • Why Is zHyperWrite Not Used for All Mirrored Writes?
  • Prerequisites
  • Reference Material
  • Summary
Meet the Future of I/O – zHyperLinks
  • zHyperLink Overview
  • zHyperLinks and Disaster Recovery
  • Why Are All I/Os Not Candidates for zHyperLinks?
  • Identifying If zHyperLinks Can Help You
  • Implementing zHyperLinks
  • Prerequisites
  • References
  • Summary
News
  • Red Alerts
  • Recent APARs
  • News from Techdocs
  • Social Media
  • Publications
  • Events / Conferences
Acknowledgments
Cheryl’s List Blog Posts

No. 1 (148 pages)

Management Summary
Welcome to Mario Bezzi
User Experiences and Tips
  • The Financial Value of Staying Current
  • CICS Technical Information
  • SDSF Rexx in an Instant
  • IBM’s Futuristic Sense of Humor
  • Extract RMF Monitor III Information to CSV File
IBM Container Pricing
  • What Is Container Pricing?
  • Why Do We Need Another Pricing Option?
  • How Does Container Pricing Address These Issues?
  • Container Pricing Infrastructure
  • Summary of the Available Solutions
  • References
  • Prerequisites
  • Summary
The Death of the Mainframe (again)
JES2 Resource Usage SMF Record
  • Introduction
  • Thinking Ahead
  • References
  • Summary
IBM z14 ZR1 Quick Overview
Inspector Clouseau Meets GRS
  • Introduction
  • Sysplex Lock Services
  • Contention Notification System
  • The Cost of Contention
  • Generic Queue Scans
  • Sources of Information
  • Identifying and Investigating Unusual GRS-Related Situations
  • Recommendations
  • Resources
  • Summary
News
  • Red Alerts
  • Recent APARs
  • News from Techdocs
  • Social Media
  • Publications
  • Events / Conference
Acknowledgments
Cheryl’s List Blog Posts
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