Summary of changes
by Manuela Mandelli, Mike Brooks, Graham Rawson, Ian Burnett
IBM CICS Performance Series: CICS TS for z/OS V5 Performance Report
- Front cover
- Notices
- Preface
- Summary of changes
- Part 1 CICS TS for z/OS performance concepts
- Chapter 1. Performance terminology
- Chapter 2. Test methodology
- Chapter 3. Workload descriptions
- Chapter 4. Open transaction environment
- Part 2 CICS TS performance information
- Chapter 5. CICS TS for z/OS V5.1
- 5.1 Introduction
- 5.2 Release-to-release comparisons
- 5.3 Improvements in threadsafety
- 5.4 Changes to system initialization parameters
- 5.4.1 Active keypoint frequency (AKPFREQ)
- 5.4.2 Extended dynamic storage area limit (EDSALIM)
- 5.4.3 Terminal scan delay (ICVTSD)
- 5.4.4 Maximum open TCBs (MAXOPENTCBS)
- 5.4.5 Maximum XP TCBs (MAXXPTCBS)
- 5.4.6 Maximum tasks (MXT)
- 5.4.7 Priority aging interval (PRTYAGE)
- 5.4.8 Location of terminal user areas (TCTUALOC)
- 5.5 Enhanced instrumentation
- 5.5.1 The DFHCHNL performance group
- 5.5.2 The DFHCICS performance group
- 5.5.3 The DFHDEST performance group
- 5.5.4 The DFHFILE performance group
- 5.5.5 The DFHRMI performance group
- 5.5.6 The DFHSOCK performance group
- 5.5.7 The DFHSTOR performance group
- 5.5.8 The DFHTASK performance group
- 5.5.9 The DFHTERM performance group
- 5.5.10 Monitoring domain global statistics
- 5.5.11 Loader domain global statistics
- 5.6 Virtual storage constraint relief
- 5.7 64-bit application support
- 5.8 Java 7 and zEnterprise EC12
- 5.9 CICSPlex System Manager dynamic routing
- 5.10 Workload consolidation
- 5.11 Effect of threadsafe transient data
- 5.12 Transaction isolation
- Chapter 6. CICS TS for z/OS V5.2
- 6.1 Introduction
- 6.2 Release-to-release comparisons
- 6.3 Improvements in threadsafe API and SPI commands
- 6.4 Changes to system initialization parameters
- 6.5 Enhanced instrumentation
- 6.6 Kerberos
- 6.7 JSON support
- 6.8 Java applications and trace
- 6.9 Web services over HTTP improvements
- 6.10 Java 7.0 and Java 7.1
- Chapter 7. CICS TS for z/OS V5.3
- 7.1 Introduction
- 7.2 Release-to-release comparisons
- 7.3 Improvements in threadsafety
- 7.4 Changes to system initialization parameters
- 7.5 Enhanced instrumentation
- 7.6 Low-level CICS optimizations
- 7.7 Web support and web service optimization
- 7.8 Java workloads
- 7.9 Java 8 performance
- 7.10 Simultaneous multithreading with Java workloads
- 7.11 Reporting of CPU time to z/OS Workload Manager
- 7.12 z/OS Connect for CICS
- 7.12.1 CICS TS V5.3 performance enhancement
- 7.12.2 Varying payload sizes by using Java parser
- 7.12.3 Comparing Java and native parsers
- 7.12.4 Comparing Java and native parsers with varying request sizes
- 7.12.5 Comparing Java and native parsers with varying response sizes
- 7.12.6 Native parser conclusion
- 7.13 HTTP flow control
- 7.14 High transaction rate performance study
- 7.15 WebSphere Liberty zIIP eligibility
- 7.16 Link to WebSphere Liberty
- Chapter 8. CICS TS for z/OS V5.4
- 8.1 Introduction
- 8.2 Release-to-release comparisons
- 8.3 Improvements in threadsafety
- 8.4 Changes to system initialization parameters
- 8.5 Changes to resource definition attribute default values
- 8.6 Enhanced instrumentation
- 8.6.1 The DFHCICS performance group
- 8.6.2 The DFHPROG performance group
- 8.6.3 The DFHTASK performance group
- 8.6.4 Transaction resource class data
- 8.6.5 Identity class data
- 8.6.6 Asynchronous services global statistics
- 8.6.7 IBM MQ monitor statistics
- 8.6.8 TCP/IP global statistics
- 8.6.9 TCP/IP services resource statistics
- 8.6.10 z/OS Communications Server global statistics
- 8.7 CICS tasks for WebSphere Liberty applications
- 8.8 z/OS WLM Health API
- 8.9 Asynchronous API
- 8.10 EXCI support for channels and containers
- 8.11 CICS support for IBM Health Checker for z/OS
- 8.12 Web services performance
- Chapter 9. CICS TS for z/OS V5.5
- 9.1 Introduction
- 9.2 Release-to-release comparisons
- 9.3 Improvements in threadsafety
- 9.4 Changes to system initialization parameters
- 9.5 Enhanced instrumentation
- 9.6 Virtual storage constraint relief
- 9.7 z/OS WLM Health API
- 9.8 Disabling of VSAM dynamic buffer addition
- 9.9 USS processes associated with L8, L9, X8, and X9 TCBs
- 9.10 Channels performance improvement
- 9.11 Threadsafe Coupling Facility Data Tables
- 9.12 CICS policy rules
- 9.13 Encrypted zFS file systems
- 9.14 Multiple Liberty JVM servers in a single CICS region
- 9.15 Liberty JVM server and application startup times
- Related publications
- Back cover
Summary of changes
This section describes the technical changes made in this edition of the book and in previous editions. This edition might also include minor corrections and editorial changes that are not identified.
Summary of Changes for SG24-8298-02 for IBM CICS Performance Series: CICS TS for z/OS V5 Performance Report as created or updated on August 8, 2019.
August 2019, Third Edition
This edition was updated to reflect enhancements in Version 5, Release 5 of IBM CICS Transaction Server for z/OS (CICS TS) and includes the following new and changed information.
New information
Changed information
•Corrections to configuration parameters in 8.2.5, “The Java servlet that uses JDBC and VSAM” on page 156 and 8.2.6, “The Java OSGi workload” on page 159.
•Updated information in 8.8, “z/OS WLM Health API” on page 173 to include new function available via APAR.
March 2018, Second Edition
This edition was updated to reflect enhancements in Version 5, Release 4 of IBM CICS Transaction Server for z/OS (CICS TS) and includes the following new and changed information.
New information
Changed information
Chapters 5, 6, and 7 are updated to reflect changes in IBM CICS TS V5.4 parameter limits and defaults.
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