Book Image

JBoss AS 5 Performance Tuning

By : Francesco Marchioni, Jason Savod
Book Image

JBoss AS 5 Performance Tuning

By: Francesco Marchioni, Jason Savod

Overview of this book

Today's organizations need to deliver faster services to a large set of people and businesses. In order to survive this challenge, enterprises need to optimize the performance of their application server along with its components and hardware. Writing faster applications is no longer just an option for your products; it's an imperative requirement, which you cannot ignore. JBoss AS 5 Performance Tuning will teach you how to deliver fast applications on the JBoss Application Server and Apache Tomcat, giving you a decisive competitive advantage over your competitors. You will learn how to optimize the hardware resources, meeting your application requirements with less expenditure.The performance of Java Enterprise applications is the sum of a set of components including the Java Virtual Machine configuration, the application server configuration (in our case, JBoss AS), the application code itself and ultimately the operating system. This book will show you how to apply the correct tuning methodology and use the tuning tools that will help you to monitor and address any performance issues. By looking more closely at the Java Virtual Machine, you will get a deeper understanding of what the available options are for your applications and how their performance will be affected. You will learn about thread pool tuning, EJB tuning, JMS tuning, Enterprise Java Beans, and the Java Messaging Service. The persistence layer and JBoss Clustering service each have a chapter dedicated to them as they are two of the most crucial elements to configure correctly in order to run a fast application. You will also learn how to tune your web server, enabling you to configure and develop web applications that get the most out of the embedded Tomcat web server.
Table of Contents (17 chapters)
JBoss AS 5 Performance Tuning
About the Author
About the Reviewers
A Tuned Mind

Profiling the Java Virtual Machine

Profiling the JVM is an essential task to make sure the virtual machine is performing well and also to check the health of your application server.

Before we start profiling our applications it's a prerequisite that you have installed Java Virtual Machine v.1.6 on your computer: if you already have got one working you can safely skip the following section and move to the Installing VisualVM section.

Installing the JVM

In order to install Java, let's move to the Oracle/Sun download page:

Choose to download the latest JDK/JRE, which is, at the time of writing, the JDK 1.6 update 20. Once the download is complete, run the executable file to start the installation.

jdk-6u20-windows-i586.exe    # Windows
sh jdk-6u20-linux-i586.bin   # Linux

You can accept all the defaults given to you by the set up wizard. When the installation is completed, we need to update a couple of settings on the computer...