Performance Tuning for Content Manager

152 Performance Tuning for Content Manager

7.1 Introduction

Tuning a Content Manager system involves tuning the operating system. Most of

the tasks performed by Content Manager depend directly on the operating

system functionalities and capabilities. It is very important to include operating

system tuning, preferably before the system goes into production.

7.2 Tuning AIX operating system

Certain configuration changes can be made to increase performance of a

Content Manager system running on an AIX platform. This section covers the

changes you can make to the OS to maximize your system performance:

 Adjust maximum number of PROCESSES allowed per user.

 Use JFS2 and EJFS for logical volumes and file systems.

 Check the default values in ulimit.

 Configure disk I/O for effective usage.

Tuning the network improves Content Manager system performance. In this

section, we also cover the changes you can make to the network to maximize

your system performance:

 Set all machines to full duplex.

 Set MTU size to the maximum supported by LAN.

7.2.1 Adjust maximum number of PROCESSES allowed per user

Increase the allowable number of processes by user from 1024 to a higher value

depending on how many users will be connected to your system. It is important

to update this value due to the large number of processes created on the

database instance owners.

Attention: Most of the material covered in this chapter is extracted from the

following publications, written by the Content Manager Performance Team:

 IBM DB2 Content Manager V8.3 Performance Tuning Guide

http://www.ibm.com/support/docview.wss?uid=swg27006452

 Performance Tuning Guide for Content Manager V8.3 on Linux (x86)

http://www.ibm.com/support/docview.wss?uid=swg27007130

Attention: For more information about AIX performance tools and tuning,

refer to AIX 5L Practical Performance Tools and Tuning Guide, SG24-6476.