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

Configuring JGroups transport

Clustering requires communication between nodes to synchronize the state of running applications or to notify changes in the cluster definition.

JGroups ( is a reliable group communication toolkit written entirely in Java. It is based on IP multicast, but extends by providing reliability and group membership.

Member processes of a group can be located on the same host, within the same Local Area Network (LAN), or across a Wide Area Network (WAN). A member can be in turn part of multiple groups.

The following picture illustrates a detailed view of JGroups architecture:

A JGroups process consists basically of three parts, namely the Channel, Building blocks, and the Protocol stack. The Channel is a simple socket-like interface used by application programmers to build reliable group communication applications. Building blocks are an abstraction interface layered on top of Channels, which can be used instead of Channels whenever...