Book Image

Performance Testing with JMeter 3 - Third Edition

By : Bayo Erinle
Book Image

Performance Testing with JMeter 3 - Third Edition

By: Bayo Erinle

Overview of this book

JMeter is a Java application designed to load and test performance for web application. JMeter extends to improve the functioning of various other static and dynamic resources. This book is a great starting point to learn about JMeter. It covers the new features introduced with JMeter 3 and enables you to dive deep into the new techniques needed for measuring your website performance. The book starts with the basics of performance testing and guides you through recording your first test scenario, before diving deeper into JMeter. You will also learn how to configure JMeter and browsers to help record test plans. Moving on, you will learn how to capture form submission in JMeter, dive into managing sessions with JMeter and see how to leverage some of the components provided by JMeter to handle web application HTTP sessions. You will also learn how JMeter can help monitor tests in real-time. Further, you will go in depth into distributed testing and see how to leverage the capabilities of JMeter to accomplish this. You will get acquainted with some tips and best practices with regard to performance testing. By the end of the book, you will have learned how to take full advantage of the real power behind Apache JMeter.
Table of Contents (17 chapters)
Title Page
About the Author
About the Reviewers
Customer Feedback

Anatomy of a JMeter test

With the samples we have explored so far, we have seen a similar pattern emerging. We have seen what mostly constitutes a JMeter test plan. We'll use the remainder of this chapter to explore the anatomy and composition of the JMeter tests.

Test plan

This is the root element of the JMeter scripts and houses the other components, such as threads, config elements, timers, Preprocessors, Postprocessors, assertions, and listeners. It also offers a few configurations of its own.

First off, it allows you to define user variables (name-value pairs) that can be used in your scripts later. It also allows the configuration of how the thread groups that it contains should run, that is, should thread groups run one at a time? As test plans evolve over time, you'll often have several thread groups contained within a test plan. This option allows you to determine how they run. By default, all thread groups are set to run concurrently. A useful option when getting started is the Functional...