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Master Apache JMeter - From Load Testing to DevOps

You're reading from   Master Apache JMeter - From Load Testing to DevOps Master performance testing with JMeter

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Product type Paperback
Published in Aug 2019
Publisher
ISBN-13 9781839217647
Length 468 pages
Edition 1st Edition
Languages
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Authors (3):
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Bruno Demion (Milamber) Bruno Demion (Milamber)
Author Profile Icon Bruno Demion (Milamber)
Bruno Demion (Milamber)
Antonio Gomes Rodrigues Antonio Gomes Rodrigues
Author Profile Icon Antonio Gomes Rodrigues
Antonio Gomes Rodrigues
Philippe Mouawad Philippe Mouawad
Author Profile Icon Philippe Mouawad
Philippe Mouawad
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Table of Contents (14) Chapters Close

About the Book 1. Quick Start with JMeter FREE CHAPTER 2. JMeter Overview 3. Designing a Test Case 4. Important Concepts in JMeter 5. Preparing the Test Environment (Injectors and Tested Systems) 6. Being Productive with JMeter 7. Load Testing a Website 8. Load Testing Web Services 9. Load Testing a Database Server 10. Load Testing Message-Oriented Middleware (MOM) via JMS 11. Performing a Load Test 12. Visualizing and Analyzing the Load Testing Results 13. Integration of JMeter in the DevOps Tool Chain

How Many Virtual Users Do I Need?

Once the number of users/transactions has been validated in the previous step, we only have to transform this number into virtual users (Threads) in JMeter.

Caution

Do not forget to take into account the requests made by bots (Qwantify (Qwant Bot), Google Bot, Bing Bot, and so on) in the calculation of the number of users.

The maximum number of virtual users configurable per injector depends on:

  • The test plan (simple or complex, well or badly written)
  • The number of listeners and their nature (some require more resources, so if we set too many virtual users, we run the risk of having a performance problem at the level of the injector, thereby distorting the results)
  • The JMeter execution type (GUI or CLI mode (also called Non-GUI mode in JMeter))
  • The resources made available for the test (number of servers, processor, memory, network, and so on)

The maximum number of virtual users is therefore limited by the available resources (injector&apos...

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