LoadUI is a load testing tool that is both gratis and open-source. It provides the ability to carry out multifaceted load tests and inspect performance by merely positioning and connecting diverse modules.
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LoadUI offers capability to create and modify test situations even while the tests are still in progress. Its effectiveness stems from its user-friendly graphics and intuitive design coupled with the flexibility of mid-test alterations.
How Does LoadUI Operate?
LoadUI works on the principle of developing elements, called Components, dragged from the component Toolbar onto the Project that is being worked on. Components have the ability to be interlinked using wires with no bounds to how many components can be created or linked.
This drag-and-drop strategy is particularly useful during the testing process as it facilitates the execution of intricate load tests. The detailed overview allows you to experiment with different combinations during the actual test and respond to them immediately. In LoadUI, fast feedback is crucial.
Generating Load Tests Using LoadUI
To conduct a test with LoadUI, you’ll require at least two components (and an unfilled project);
– A generator: Capable of producing specific loads, like 100 queries per second.
– A Runner: Executing a certain form of test, such as a web test.
Let’s initiate this: extract a Fixed Rate Generator and a Web Page Runner.
Nevertheless, we cannot start the test yet. Initially, you’ll need to connect them by joining the nodes or terminals situated above and below the components using connections.
Next, connect the Fixed Rate Generator with the Web Page Runner.
Upon connecting everything, enter the website you desire to load test into the Web Page Runner. Your test is all set to be conducted! Press the play control in the top menu to initiate transmitting requests to your site.
You can keep a tab on the test’s progress live by clicking on the Results Workbench button. Once there, double-click on your Current Run and add the Response Time widget to the rack from the left-hand menu.
Great job! You’ve successfully devised your first load test through LoadUI. Browse the widgets on your dashboard, include more if required, and track other variables in the Results Workbench.
The next logical step is to add an Assertion component and link it with the Web Page Runner. This will allow you to assess how frequently your queries comply with certain regulations (e.g., taking under 10 milliseconds).
Get Management Onboard!
This contemporary method involves someone less experienced conducting the testing to identify any problems with your service. It also promotes an understanding of and enthusiasm for testing within the managerial team. The common feedback is, “This is fun! But challenging…”
LoadUI offers highly interactive and real-time configurable features. Seize this by concurrently creating a second test on the same server with a different Generator. Identify any potential weaknesses the system might have when exposed to unpredictable, realistic behavior. Experiment and make real-time modifications.
Document Your Tests
As LoadUI is highly interactive, replicating tests can be a challenge. Consider using a screen recording tool like Wink (which is complimentary) to play back your tests and pinpoint what caused the service to fail.
Adhere to a Structured Approach
LoadUI supports breaking down tests into smaller, manageable test cases that can be initiated simultaneously.
If you have functional tests in soapUI, you can simply run them in LoadUI using the soapUI component. This negates the need to redefine tests in LoadUI.
Customize Your Components
Being a free tool, LoadUI is also open-source. Hence, you can script your components using Groovy. LoadUI has no bounds except those you implement! Discover more about creating tailor-made components here.
For further details on LoadUI and to download the tool, visit Latest LoadUI Version
About The Writer:
This contributor article is authored by Henrik Olsson, a software developer for LoadUI, who is located in Stockholm, Sweden. Henrik has a scholarly background in Distributed Systems and is passionate about usability. He has hands-on experience in teaching and firmly believes that most things can be effortlessly explained with precise targeting and efficient modeling.
Editor’s Observation: I take immense pleasure in introducing this open-source tool for load testing, LoadUI and soapUI being the best from Eviware (now SmartBear). If a load testing tool is on your agenda for your undertaking, do consider LoadUI and soapUI (functional testing tool).
I have personally utilized SoapUI for countless projects and will be examining it closely in a forthcoming article. The power and finesse of these open-source tools have left me astounded!
Should you be using this tool and have tips to share, we urge you to leave them in the comment section below. We welcome and are open to any suggestions or queries you might have about LoadUI.