What is meant by Endurance Testing in Software Testing?

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Endurance Testing

Endurance testing is a non-functional type of software testing in which a software program is put through to a high load for a lengthy period to assess its behavior under helping use. The primary purpose of endurance testing is to ensure that the application can handle a huge volume of data without becoming sluggish.

This sort of testing is done towards the end of the performance run cycle. Endurance testing is a time-consuming process that might last up to a year. External loads may be applied, such as Internet traffic or user actions. Endurance testing differs from load testing, which usually lasts a few hours.

Endurance depicts capacity. As a result, Endurance Testing can also be rconsidered as Capacity Testing.

What Is the Purpose of Endurance Testing?

The main purpose of this investigation is to find any possible memory leaks. As a result, memory utilization is closely monitored during the testing process. I'm assuming you're acquainted with the term "memory leak." Still, let me define a memory leak for those who are unfamiliar with the term.

When a software program fails to release unneeded memory, a memory leak develops, resulting in poor performance or failure.

A memory leak may not have an immediate effect, but it slows down the system over time, eventually leaving no free memory and causing an application or system to crash. A memory leak is an issue that is only discovered after a certain period of time has elapsed.

As a result, endurance testing is necessary to identify such flaws.

However, it's possible that your application will run effectively under a heavy load for a short period of time, say an hour. However, if your application is continually subjected to the same level of stress for a longer period of time, say 3-4 hours, it will crash due to resource difficulties and a lack of disc space.

Another important issue that endurance software testing aims to detect is performance deterioration. Following lengthy usage, it must be assured that throughput or reaction times are comparable to or better than at the start of the test.

The Endurance test also finds issues with database connections. It's conceivable that the system will crash if the database connection isn't properly ended.

The endurance test also looks for proper connection closure between the system's layers, which may cause specific modules to hang if they weren't.

In a nutshell, the endurance test is used to measure how well a system functions over a long period of time. Endurance testing detects memory leaks, performance deterioration, database connection problems, and other critical issues.

Endurance Testing: What to Look For

The following items are checked during endurance testing.

  • Test memory leakage- Checks are performed to see whether there is any memory leakage in the application, which could result in the system or operating system crashes.

  • Test connection closure between the layer of the system - If the link between the layers of the system is not effectively closed, some or all of the system's modules may be stalled.

  • Close the database connection successfully- If the database connection is not ended properly, the system may crash.

  • Test response time - As the application becomes less efficient as a result of lengthy use, the response time of the system is checked.

Endurance Test Duration

If the project requires constant operation 24 hours a day, 7 days a week, and Endurance Test should last at least 72 hours. The rationale for this is because the program should be able to run unattended on weekends (as weekend support is costly for organizations).

As a result, we'll need to test the system under heavy load for a time slightly longer than a weekend. However, because conducting the test for 72 hours can be too taxing, we usually only do it for 12 hours.

Furthermore, there is no hard and fast rule for how long a soak test should last. It is mostly determined by aspects such as customer involvement, actual production use, and so on. The endurance tests might sometimes last a year!

How to Carry Out This Test

The procedure for doing this test is as follows −

#1) Create the Test Environment −

This entails determining the hardware, software, database (along with its size as the test progresses), and operating system is required to run the Endurance test.

It also entails assembling a team to conduct the endurance testing and delegating roles and responsibilities within the group. The test environment should be ready before the test is run, and it should be adequately separated from the live system.

#2) Design, Review, and Finalize Test Cases − Test cases should be designed, evaluated, and finalized.

This is also the time to develop the test execution strategy.

The application's breakpoint should be identified, and the amount of load that will be applied to the application during an endurance test should be finalized.

#3) Estimation of test cycles − This entails determining the length of each test phase and the number of test cycles required.

#4) Risk Analysis − This is a critical step in the testing process. The risk factor is used to prioritize the test cases.

The following are some of the risks and issues that a tester could encounter during the Endurance test −

  • Is the consistency of the performance test going to be maintained over time?

  • Are there any more minor concerns that haven't been addressed yet?

  • Is there any outside interference that hasn't been addressed yet?

#5) Test Schedule: Establish a budget, deliverables, and deadlines.

#6) Test Execution: This is when the endurance test is finally started.

#7) Test Cycle Closure: Based on the exit criteria established during the test planning phase, close the test cycle. It could be determined by the number of flaws discovered, the length of the test, and so on.

Endurance Testing's Advantages

The following are some of the advantages of this testing −

  • It assures that an application is fit for use.

  • It identifies problems that might otherwise go undetected by other performance tests. During volume testing or stress testing, for example, you might not notice a memory leak.

  • Enhances the application's sturdiness: It detects performance degradation issues that may arise under high continuous demand and then fixes them, making the application more resilient.

  • It describes the long-term behavior of the system under strain. In other words, it monitors the system's long-term viability.

  • The data from the endurance test can be used by the customer to validate or improve their infrastructure requirements.

Endurance Testing's Drawbacks

  • It might be difficult to determine how much stress is appropriate.

  • If the Test Environment is not isolated, Endurance Testing may result in application and/or network failures, causing a substantial interruption.

  • Over-stressing the system can result in permanent data loss or corruption.

  • After the stress is lifted, resource utilization remains quite high.

  • Some of the application's components aren't responding.

  • The end-user is aware of unhandled exceptions.

Example of Endurance Testing

While stress testing pushes the tested system to its breaking point, endurance testing pushes the application to its breaking point over time.

When software operates for an extended period of time, for example, the most difficult issues - memory leaks, database server use, and unresponsive system - occur. If you skip the endurance tests, you'll have a hard time finding such flaws before deployment.

Endurance Testing Tools

  • WebLOAD

  • LoadComplete

  • Apache JMeter

  • Load Runner

  • Appvance

  • LoadUI

  • OpenSTA

  • Rational Performance Tester


What is Endurance Testing? We learned about it in this article. What steps must be taken? Its benefits and drawbacks, as well as the many instruments available.

The following are some major takeaways −

  • Endurance testing (also known as soak testing, longevity testing, or capacity testing) is a sort of non-functional testing that determines whether a software system can withstand a large expected load for an extended period of time.

  • Load Testing is a subset of this.

  • Memory leaks, speed degradation, database connection difficulties, and other serious issues are detected as part of this testing.

  • The length of an endurance test is determined by the needs of the business, project, and client. It can endure anywhere from 5 to 10 hours, a few days, a month, or even a year.

  • It strengthens the application and prepares it to withstand enormous weights indefinitely.

  • The Endurance test should not be done manually because it is quite time-consuming. It's largely automated.

  • It should begin with the creation of an isolated test environment, followed by the creation of test plans, the estimation of test cycle time, the analysis of risk, the preparation of the test schedule, the execution of the endurance test, and ultimately the closing of the test cycle.

  • Apache Jmeter, LoadStorm, LoadRunner, LoadUI, Appvance, OpenSTA, WebLoad, and IBM Rational Performance Tester are some of the best tools for Endurance testing.

Published on 02-Dec-2021 05:40:16