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


In this chapter, you have learnt the basics of the performance tuning process: let's shortly recap the most significant points:

  • Performance can be evaluated with two main counters: The Response Time and the Throughput. The Response Time can be defined as the time it takes for one user to perform a task. The Throughput is the number of transactions that can occur in a given amount of time.

  • In order to meet higher loads, applications need to be scalable. You can scale your applications vertically (that is switching to servers with higher capabilities) or horizontally (that is adding a line of servers).

  • In order to improve the performance of your applications, you have to consider all resources which are around the application: the Java Virtual Machine, the middleware, the hardware, and how you code the application itself.

  • Maximum application performance can be achieved only if performance tuning is considered to be a part of your overall software development plan.

In the next chapter, we are going to introduce a few essential tools, which you can freely download, and use in order to tune your Enterprise applications and your operating system as well.