Book Image

Master Apache JMeter - From Load Testing to DevOps

By : Antonio Gomes Rodrigues, Bruno Demion (Milamber), Philippe Mouawad
Book Image

Master Apache JMeter - From Load Testing to DevOps

By: Antonio Gomes Rodrigues, Bruno Demion (Milamber), Philippe Mouawad

Overview of this book

Load tests help identify the maximum number of requests a software system can handle. One popular open source tool for load testing is JMeter. By leveraging the features and capabilities of JMeter, you can perform extensive load testing and fix issues in your application before they become problematic. This book is written by JMeter developers and begins by discussing the whole process, including recording a script, setting it up, and launching it, enabling you to almost immediately start load testing. You'll learn the best practices that you must follow while designing test cases. You'll also explore the different protocols offered by JMeter through various real-world examples. Finally, you'll see how to integrate JMeter into the DevOps approach and create professional reports. You'll discover ways to use the eco-system of JMeter to integrate new protocols, enrich its monitoring, and leverage its power through the use of the cloud. By the end of this book, you'll know all that's needed to perform comprehensive load testing on your applications by using all the best practices and features of JMeter.
Table of Contents (14 chapters)

Visualizing and Analyzing the Load Testing Results

Introduction

Visualizing and analyzing the results of a load test is an important step.

It allows us to:

  • Validate that our scripting is realistic (by checking that the number of executions of business transactions during the test run matches the expected number).
  • Debug the script.
  • Know how the targeted platform handles the load.
  • See how the response times evolve over time.
  • See what errors and issues occur.

Viewing results from JMeter is based on Listener elements.

JMeter allows the recording of results in different formats:

  • CSV files are the default format. The data comes in as one line per sample at a particular time, and the fields are separated by a configurable separator (by default, the comma).
  • An XML file that stores the different fields as tags or XML attributes. It allows us to fully record the sent and received data, thus providing an exhaustive view of the requests and responses...