z/OS Measurement & Tuning

 LENGTH OF COURSE:
 5 Days

DESCRIPTION: This course is designed to provide systems programmers with a working knowledge of OS/390 performance factors. Techniques widely used by experienced tuning and performance specialists will be presented.

PREREQUISITES: A basic knowledge of OS/390 internals and at least six months of OS/390 systems programming experience.

INSTRUCTION TECHNIQUES: A combination of Lecture and Exercises. Students will benefit by brining RMF or CMF reports to class.

AUDIENCE

This course is intended for experienced OS/390 Systems Programmers responsible for tuning OS/390 operating systems.
KEY HIGHLIGHTS:
  • OS/390 evolution
  • Tuning an OS/390 operating system
  • Components that impact system performance
    • Central Storage
    • Expanded Storage
    • Paging and Swapping
    • I/O Queuing
  • Rules of thumb to improve system performance
  • IPS, ICS, and OPT parameters for different types of workloads
  • Workload management policies
    • Policy Mode
    • Compatibility Mode
    • WLM Concepts
  • RMF reports
  • The role of SRM
  • Benefits of logical swaps
  • Performance impact of the paging subsystem


  • The role of the Auxiliary Storage Manager, Processor Storage Manager, and System Resource
  • Manager
  • Logical Partition (LPAR) resource management
    • Partitioning Storage
    • HSA Storage
    • Event Driven Mode
    • Time Slicing
    • Low Utilization Overhead
  • Incorrect I/O related performance problems
    • Channel Paths
    • Cache Controllers
    • Seek Times
    • DASD Strings


FROM OUR STUDENT EVALUATIONS...
"Instructor knows the material and related well with the class."

Gerald A. Gawecki
AAA

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