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1991 Tuning Letters

Home Publications Cheryl Watson’s Tuning Letter Tables of Contents 1991 Tuning Letters

December 1991 (14 pages) 
MVS Review

      • Exchange Swapping
      • ISV

FOCUS: IPS Design 

        • Defining Exchange Swapping (SP 4.2)
        • Defining Exchange Swapping (Pre 4.2)
        • Summary of IPS Design
        • Converting to SP 4.2

Miscellaneous

      • Dedicated & Shared LPARs

November 1991 (26 pages) 
MVS Review

      • SRM Second
      • Service Rate
      • MPL Determination

FOCUS: IPS Design

        • Determining Domains
        • Setting MPL Thresholds
        • Defining Domains
        • Evaluating Domains

Miscellaneous

      • Deleted Trace Elements
      • Feedback
      • PDS Blocksizes
      • More on IDRC
      • VSAM Comments
      • Estimating ESTOR
      • Tuning DASD
      • ESTOR Page Movement

Supplements 

          RMF Part 1: Trace (4 pages)
          SRM Service Objectives (6 pages)

October 1991 (18 pages)
FOCUS: Designing A New IPS (SP 4.2)

        • Updating the ICS and IPS
        • Creating an ICS
        • Defining Periods
        • Determining Priorities
        • Assigning PGNs
        • Defining Domains

Miscellaneous

      • Tuning VSAM Under CICS

September 1991 (22 pages) 
FOCUS: Tuning VSAM 

        • General VSAM Tuning Tips
        • Tuning ESDS Files
        • Tuning RRDS Files
        • Tuning KSDS Files
        • Tuning KSDS Buffers – NSR
        • Tuning KSDS Buffers – LSR
        • Using Batch LSR
        • VSAM Bibliography

MVS Review

        • VSAM Basics

MVS Measurements

        • VSAM LISTCAT
        • SMF Records

Feedback

      • SMF Dumping

Update Sheet Issued 2/94 

August 1991 (22 pages) 
Determining Workloads
Finding System Constraints
FOCUS: Reducing CPU 

        • Reducing Monitors
        • Reducing MVS Overhead
        • Tuning Applications
        • Alternatives

Feedback

      • TSO Recovery

July 1991 (19 pages) 
FOCUS: Reducing I/O 

        • Increasing Tape Blocksizes
        • Using IDRC
        • Increasing DASD Blocksizes
        • Increasing Buffers
        • Unnecessary I/Os
        • Using VB Files

I/O Product Bibliography

      Tuning Bibliography
      On a Personal Note
      Feedback

Update Sheet 8/91 

June 1991 (22 pages) 
FOCUS: MVS/ESA Measurements

        • I/O Measurements
        • CPU Measurements
        • Storage Measurements
        • MVS/ESA Facilities
        • Other Measurements

MVS Review

        • SMF Records

Feedback

      • Uploading DB2 Tables
      • TSO Recovery

Update Sheet 5/92 

May 1991 (24 pages) 
MVS Review

        • Paging & Swapping

MVS Measurements

      • Paging & Swapping

FOCUS: Tuning Paging & Swapping 

        • Page & Swap Data Sets
        • Swapping to Page Data Sets
        • Swapping to Swap Data Sets
        • Combining PLPA & Common
        • Unnecessary Swaps

Miscellaneous

        • Amdahl’s MDF
        • Something Old, Something Blue
        • Reblocking SMF

Feedback

Update Sheet 9/91 

April 1991 (26 pages)
MVS Review

        • What’s An EXCP?
        • DASD I/O Explained

MVS Measurements

      • How To Measure I/O

FOCUS: Tuning DASD 

        • Reducing PEND Time
        • Reducing IOSQ Time
        • Reducing Disconnect Time
        • Controlling Connect Time

RMF Report JCL

Update Sheet Issued 11/93 

March 1991 (22 pages)
FOCUS: Central Storage

        • Fencing Loved Ones
        • Limiting Baddies

Other Tips

        • Reducing I/O Elongation
        • New PR/SM APAR
        • Reblocking SMF

MVS Review

      • SRM Service Units
      • Storage Isolation Overview

Update Sheet Issued 12/96 

February 1991 (28 pages) 
FOCUS: PR/SM

      • Nature of PR/SM Overhead
      • Computing Overhead Without a Benchmark
      • Changing SRM Parameters
      • PR/SM Tuning Tips
      • PR/SM Bibliography

FOCUS: Central Storage 

        • Reducing Storage Movement

MVS Review

        • PR/SM Overview
        • UIC and Page Stealing

MVS Measurements

        • Calculating Capture Ratio
        • CPU Under PR/SM
        • Determining CSTOR Users

Feedback

      Miscellany

Update Sheet Issued 3/91 

January 1991 (16 pages) 
FOCUS: Tuning TSO 

        • Reducing ISPF Response
        • Eliminating TSO STEPLIBs
        • Reducing O/P Wait Swaps
        • Reducing TSO Period Swaps
        • Invoking CLISTs Faster
        • Reducing CLIST Response
        • Consistent Response

MVS Review

        • MVS Program Fetch

MVS Measurements

        • TSO Response Time
        • TSO Command Use

Miscellany

Update Sheet Issued 9/95 


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