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

A practical example

Until now we have discussed many aspects of JVM tuning. All the concepts that you have learnt so far need a concrete example to be truly understood.

We will introduce here a complete JVM analysis use case, which can be used as pathfinder for your tuning sessions. In the first part of the example we will choose the correct amount of memory that needs to be allocated, then, we will try to improve the throughput of the application by setting the appropriate JVM options.

It is clearly intended that the optimal configuration differs from application to application so there is no magic formula which can be used in all scenarios. You should learn how to analyze your variables correctly and clearly find the best configuration.

Application description

You have been recruited by Acme Ltd to solve some performance issues with their web application. The chief analyst reported to you that, even if the code has been tested thoroughly, it's suspected that the application has got some memory...