Abstract
This IBM® Redpaper™ publication is a study of the performance of a Java Platform, Enterprise Edition (Java EE) application that is hosted by an IBM CICS® Transaction Server for z/OS® (CICS) V5.3 Liberty JVM server that uses the standard mode of operation that is provided by APAR PI58375. In this mode, nearly all of the application’s central processing unit (CPU) consumption can be off-loaded to IBM System z® Integrated Information Processors (zIIPs), which minimizes the total cost of computing for such a workload.
The target audience for this Redpaper publication is Capacity Planners and Performance Analysts who might need to understand how to configure an IBM CICS Liberty JVM server to run Java EE applications with minimal general processor use.
This Redpaper publication is one in a series that is focused on CICS performance. It is written by a member of the IBM Hursley CICS development community. The subject matter in this series is based on feedback from CICS customers.
Table of Contents
Introduction
Overview
Executive summary
Standard mode Liberty in CICS
DayTrader 3 application
Nested transaction scope within the DayTrader 3 application
Test environment and schematics
Performance measurement procedure
Performance metrics
Configurations measured
Standard mode on two LPARs
Standard mode on a single LPAR
Integrated mode on 2 LPARs
Results
Standard mode on 2 LPARs
Standard mode on a single LPAR
Integrated mode on 2 LPARs
Conclusions
Other resources for more information