What is Load Testing? Examples, Tutorials & More

What this means is that your virtual users will need to pause between steps to replicate a real user thinking. After all, virtual users can zip through a workflow much faster than real people can. Therefore, to faithfully recreate peak load conditions that your systems will see in real life, your load tests need to account for the speed at which real people will use your application. Load Testing is a type of Performance Testing that determines the performance of a system, software product, or software application under real-life based load conditions. Basically, load testing determines the behavior of the application when multiple users use it at the same time.

what is load testing

Performance testing should use software to measure how well it performs or does not perform. User Acceptance Testing is when we start to use real software or system users to see how it performs in the real world. Rather, it’s meant to set the benchmark and standard for the application.

How to Select Load Testing Tool?

The Supply of Machinery Regulation 1992 UK state that load testing is undertaken before the equipment is put into service for the first time. Performance testing applies a safe working load , or other specified load, for a designated time in a governing test method, specification, or contract. The major advantage of performing the load testing is reducing the cost failures, which also helps us minimize the system interruption risks. For example, In the LoadRunner testing tool, the scenarios are created with the LoadRunner controller’s help.

what is load testing

From here, you’ll want to repeatedly test these user journeys and see how they are impacted by increasing loads. Before starting a load test, it’s important to gather information about the system and its capabilities. This includes understanding if any load testing has been done previously, what the response times were, how many users the system could handle, what is load test etc. The approach to load testing can then be developed, which may involve manual testing or the use of open source or commercial tools, depending on the project’s requirements and budget​. The importance of load testing lies in its ability to reveal how a system performs under extreme conditions and make sure whether it can manage peak user interaction.

Story time

These tools also include the ability to parse the response from a target server or application, as well as use content from the response to assert a value exists, or re-use values in a future request. BlazeMeter is a continuous testing platform that enables developers and testers to test the performance of their web and mobile applications under different user loads. It provides a comprehensive range of testing capabilities, including load testing, stress testing, and endurance testing that is open-source compatible. BlazeMeter also supports functional testing and API testing, and provides capabilities like mocking and test data. When creating a load test, it’s important to reflect the real-world conditions that your systems are likely to experience.

what is load testing

Many load-testing tools, such as Apache JMeter, BlazeMeter, Locust, LoadNinja, and Gatling, have been introduced to automate and streamline the load-testing process. Where load testing tests expected loads, stress testing applies unrealistic load scenarios—to the point of overloading the system till it breaks. The aim is to find out how stable your product is by stretching it beyond its bandwidth capability. Stress testing evaluates how an application will behave beyond normal conditions and normal peak load. Through specialized testing software, load testing places a simulated “load” or demand on your web application to ensure it remains stable during operation.

Tests should reflect real-world conditions

BMC works with 86% of the Forbes Global 50 and customers and partners around the world to create their future. Performance testing of any kind is not merely a development need—it’s a business requirement. When you stress test, you deliberately induce failures to analyze the risks at the breaking points. You can then tweak the programs to make inevitable failures more graceful.

Load testing is performance testing technique using which the response of the system is measured under various load conditions. You could even say that load testing and performance testing act as an extension of your customer service and your https://www.globalcloudteam.com/ overall design. This kind of testing should be done from the start of your product — to determine viability, interest, and to build reliable performance into the design and structure of the system — until the day you’re ready to retire it.

Performance Testing vs. Load Testing vs. Stress Testing

Transactions could be used to measure the work done by virtual users. We can see how different users interact with the application in the diagram above. Each user sends a request over the internet, which is then routed through a firewall. See for yourself how you can easily build, scale, analyze, and automate performance tests.

  • Now it’s time to get into how to make sure you aren’t only load testing but loading test well and covering all your requirements.
  • Using open-source tools like JMeter, Grinder, Locust, Selenium, and others, simulate thousands or millions of virtual users from over 55 geo-locations.
  • When all tests are executed or run at the same time, the system may fail.
  • Below, we will break down just how load testing works, as well as how you can successfully perform a load test and different load testing tools to consider.
  • The term “load testing” is often used synonymously with concurrency testing, software performance testing, reliability testing, and volume testing for specific scenarios.
  • To find this, look through APMs or analytic tools that provide information from the production environment.

Developer or QA engineer or if you work in DevOps, you know you need to conduct different performance testing types in order to make sure each code change or feature addition doesn’t break the system and works. Load generators are machines that run your virtual users through your system under test. Have we identified all of the parameters that we will need to measure? These can include but are not limited to client-side response time, server memory used, page faults/second, hit ratios, throughput, etc. To determine the sustainability of application with respect to extreme user load. The behavior of each system component (application server components, web server components, database components, etc.) under load.

Mobile App Testing

Here, the team monitors the relevant logs, dashboards, and any other monitoring resources. When software fails after its launch, it reduces users’ trust in the product. Fortunately, the cost of rebuilding this trust through software improvements can be reduced or averted completely if organizations’ subject their software to load testing before launch. This is because load testing can help determine when software is ready to scale and when it’s not.

In the Software Development Life Cycle , load testing is an integral part of the testing phase. It’s done to ensure that the developed software can handle the anticipated user load while maintaining acceptable performance. Workload modeling involves designing the workload to mimic the actual user navigation in production as closely as possible.

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For example, determine your acceptable response time or non-acceptable error rate. These KPIs should be derived based on product requirements and business needs. If you’re running these tests continuously, you can use baseline tests to enforce these SLAs. Ticket selling for a popular concert with high demand, or elections.