Intel 170 Servers, AS/400 RISC Server, 7xx Servers manual Purpose of this Document

Purpose of this Document

The intent of this document is to help provide guidance in terms of IBM i operating system performance, capacity planning information, and tips to obtain optimal performance on IBM i operating system. This document is typically updated with each new release or more often if needed. This October 2008 edition of the IBM i V6.1 Performance Capabilities Reference Guide is an update to the April 2008 edition to reflect new product functions announced on October 7, 2008.

This edition includes performance information on newly announced IBM Power Systems including Power 520 and Power 550, utilizing POWER6 processor technology. This document further includes information on IBM System i 570 using POWER6 processor technology, IBM i5/OS running on IBM BladeCenter JS22 using POWER6 processor technology, recent System i5 servers (model 515, 525, and

595)featuring new user-based licensing for the 515 and 525 models and a new 2.3GHz model 595, DB2 UDB for iSeries SQL Query Engine Support, Websphere Application Server including WAS V6.1 both with the Classic VM and the IBM Technology for Java (32-bit) VM, WebSphere Host Access Transformation Services (HATS) including the IBM WebFacing Deployment Tool with HATS Technology (WDHT), PHP - Zend Core for i, Java including Classic JVM (64-bit), IBM Technology for Java (32-bit), IBM Technology for Java (64-bit) and bytecode verification, Cryptography, Domino 7, Workplace Collaboration Services (WCS), RAID6 versus RAID5 disk comparisons, new internal storage adapters, Virtual Tape, and IPL Performance.

The wide variety of applications available makes it extremely difficult to describe a "typical" workload. The data in this document is the result of measuring or modeling certain application programs in very specific and unique configurations, and should not be used to predict specific performance for other applications. The performance of other applications can be predicted using a system sizing tool such as IBM Systems Workload Estimator (refer to Chapter 22 for more details on Workload Estimator).

IBM i 6.1 Performance Capabilities Reference - January/April/October 2008
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