What Is Load Testing? How it Works OpenText

During load testing, a series of tests are performed to simulate a large number of users accessing data at the same time, and the system’s performance and stability under these high loads are analyzed. By using load testing, any weak points in the software can be identified and fixed before they negatively affect the user experience or system performance. All of these tools have a robust open source community.JMeter and Gatling are purpose-built performance tools that generate load on the HTTP protocol level. By far, JMeter is the most popular tool on our cloud-based platform, but numbers alone don’t signify the relevance or importance of a load testing tool to a particular customer. For example, some of our customers favor Gatling for its domain-specific language, or ability to write tests in Scala.

load testing definition

One major consideration we mentioned earlier is if you are measuring client-side activity, or more specifically, Web 2.0 technologies. It is very important when it comes time for simulating user actions, like navigating, button clicks, entering date within forms, etc. If this is the case, the tool you choose should replicate this as load testing definition close as possible using real browsers, because that is what your users are using. Geographic location plays a huge part of the customer experience, and if disregarded, will negatively affect the user experience. The LoadView solution provides users with the option to choose from over 40 load injector servers from around the world.

Other types of Testing

Load testing can be performed internally using hardware and software within your own network or it can be performed externally with third-party test systems. The test measures the performance and response times of a system as demand on a system increases. Tests are most appropriate when carried out in production, measuring the real responsiveness of the system under simulated conditions. Tests can be scheduled or run on-demand, but tests are typically planned for a time when traffic is low so that any problems caused by the heavy traffic will affect the fewest number of actual customers. You can upload your load test scripts as scenarios.Once you have a load test scenario defined, you can run these on our distributed load generators.

load testing definition

The LoadView platform can test SPAs the same way you would for any other website or web application. Just script the user experience with the EveryStep Web Recorder and run virtual users that perform tasks under load, from real browsers. Like mentioned previously in the article, JMeter works at the protocol-level, unable to execute JavaScript, therefore, you cannot test all the actions a browser, or the user, can perform. For more information about JMeter, check out our JMeter load testing guide. Most load testing tools let you record or write a script that interacts with a website or application.

When do you Use Stress Testing?

Testers understand the software requirements, design, architecture, and functionality from the very beginning. A number of performance metrics, or key performance indicators (KPIs), can help an organization evaluate current performance. Load testing is especially important if the application, system, or service will be subject to a service level agreement or SLA. Load testing is the process of putting demand on a structure or system and measuring its response.

An important distinction of JMeter is that it sends virtual users to your website or web application from your own computer, therefore, you cannot gather real-world traffic data like you can with LoadView. LoadView has multiple data centers around the world, so you can test from anywhere your users are located. Load testing and stress testing are part of the software performance testing process—however, each one focuses on different areas of web application performance. To complement the explanation of what is load testing, we add the fact that load testing is a part of the general process known as performance testing.

Examples of Load Testing in a sentence

Explore the possibility to hire a dedicated R&D team that helps your company to scale product development. Consider the following examples to understand the importance of load testing. While conducting load testing, follow these best practices to conduct effective load testing. To know in detail how portability testing ensures the ease of transferring your application across environments, take a look at our definition post on portability testing.

load testing definition

Most such tools perform at the protocol level allowing to simulate load by making HTTP requests. Also, they provide the ability to parse the response from a target application. LoadRunner − HP’s Load Runner tool is used to test applications under regular and peak load circumstances. The load runner creates virtual users that simulate network activity to produce load.

Corporate and enterprise level load testing tools

Load testing is a non-functional performance testing technique performed to understand the behavior of a system under a specific load or requests. This process is critical in identifying the maximum operating capacity of an application as well as any bottlenecks and determine how the system handles high traffic or data processing. It is used extensively in systems that are intended to operate under a heavy demand like internet and cloud applications.

  • As stated before, the more you can ensure your site and applications perform well, the more likely customers will revisit a site or re-enter an application.
  • For example, in the bulleted list above, the first item could represent 25 VUsers browsing unique items, random items, or a selected set of items depending upon the test plan or script developed.
  • These baselines are often used for comparing more advanced tests when monitoring differences occur in performance under stress.
  • Load testing examines how the system behaves during normal and high loads and determines if a system, piece of software, or computing device can handle high loads given a high demand of end-users.
  • These scripts can then be uploaded into the LoadView platform and replayed by a virtually unlimited number of concurrent users.
  • The load testing practice is designed and used to evaluate how a software system behaves during normal and high loads to determine if it can handle high loads during high demand periods.
  • Taking the risk on deploying an application into production that has not been sufficiently tested for performance introduces an undesirable level of risk.

He brings his decade of experience to his current role where he is dedicated to educating the QA professionals. Load testing is testing where we check an application’s performance by applying some load, which is either less than or equal to the desired load. When scenario configuration and scheduling is set up, execution of the test follows. After setting the criteria and environment, here follows the development of a clearly defined test plan.

Introduction of Load Testing

The term load testing is used in different ways in the professional software testing community. For example, a word processor or graphics editor can be forced to read an extremely large document; or a financial package can be forced to generate a report based on several years’ worth of data. The most accurate load testing simulates actual use, as opposed to testing using theoretical or analytical modeling. A load test can be done with end-to-end IT systems or smaller components like database servers or firewalls. It measures the speed or capacity of the system or component through transaction response time. When the system components dramatically extend response times or become unstable, the system is likely to have reached its maximum operating capacity.

load testing definition

The specifics of a load test plan or script will generally vary across organizations. For example, in the bulleted list above, the first item could represent 25 VUsers browsing unique items, random items, or a selected set of items depending upon the test plan or script developed. However, all load test plans attempt to simulate system performance across a range of anticipated peak workflows and volumes. The criteria for passing or failing a load test (pass/fail criteria) are generally different across organizations as well. There are no standards specifying acceptable load testing performance metrics. Automating testing frees up the tester so they can perform more advanced tests and spend more time analyzing results.

Software Testing

Taking the risk on deploying an application into production that has not been sufficiently tested for performance introduces an undesirable level of risk. Better to mitigate that risk beforehand with robust and thorough load testing. In software testing, load testing is an integral part of performance testing under non-functional testing. Load testing should not be abandoned until the development project is finished but rather included throughout the software development lifecycle. Make load testing an essential part of your agile methodology and perform tests regularly to find and fix issues immediately. Load tests provide essential information about the system’s performance under specific traffic load and indicate where the improvements should be made.

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