Awesome Reporting

Out-of-the-box reporting that is just right

XLT provides best-practice reports out of the box, based on over a decade of load and performance testing experience.

Load Test Reports

The XLT performance report includes everything you need to know about your application. Besides the obvious data such as runtime totals, averages, and percentiles. It also features service-level-agreement numbers, lists the configuration of your test as well as all errors and problems. Furthermore, it provides comprehensive measurement results at various levels, from transactions and actions to individual request types.

Comparison Reports

If you run a test again and you want to know if the later round was in fact better, you can generate a comparison report.

Trend Reports

A trend report shows how performance developed over many test runs. It also uses color codes to visualize the changes.

Easily Adjustable

Add new data sources, modify the report content and layout, build powerful test suites as frameworks for even more testing.

A good tool has to be adjustable to the environment it is used in. Thus, XLT supports many ways to be extended or modified to fit your needs even better.

Reports

All reports can be adjusted in content and layout, because we deliver the CSS and the render templates as part of XLT. So if you need custom layouts of reports, you are covered. You want to have your own summary of data? Not a problem. You want to reduce the data? Fine as well.

Custom and External Data

During a load test, XLT logs a large amount of data relevant to the test run. Nevertheless, sometimes it comes in handy to log additional information about the system under test. For this purpose, XLT provides custom values.

The XLT report generator lets you include external data files in the report. This can be used if it’s impossible to directly access the external data source during the load test runtime.

Use Java

If there is anything that is not part of XLT, you can use Java to make it happen. Of course there are limits, because you can influence the measurements or limit the scaling, but with that in mind, a lot of things are possible.

Made for Automation

Java as script language, open data formats, command lines, JUnit test principle, WebDriver support, and much more.

XLT is made to be integrated into all kinds of automation processes. No matter if it‘s just a shell script or a full build process.

We built XLT in a way that perfectly gets along with your preferred IDE, the command line, build processes, or just with a little bit of shell scripting.

Load Profiles

Realistic or predictable, your choice

XLT supports a very flexible setup of load profiles ranging from steady user rates to arrival rates. Compose long-running test setups to reflect what happens during a day, absolutely freely configurable.

Load Profile Features

• Arrival rate model for realistic simulations.
• Steady user rate for predictable measurements.
• Ramp-up for gradually increasing traffic.
• Free configuration to compile challenging tests.

Freely Configurable

Do you need to have a test where, after a slow ramp-up of low traffic, the load jumps within a minute to peak traffic, stays on that level for 10 minutes to then come back in waves? Well, XLT lets you do so. No limits. It works for arrival rate-based tests as well as for user-based tests.

Shareable

Test suites and configurations can be shared easily

XLT reports are easily sharable with anyone. They are not connected to XLT anymore after they have been created.

All reports are plain HTML. So you can zip them up, mail them, upload them, attach them, and share them with whatever system you prefer.

Did you know that you can start your load test from one machine, and collect the results from another? Or maybe your co-worker can collect the data later and analyze it for you, while you're already on your way to a meeting.

See Everything

See what happens in a scenario in case of a problem

The result browser is your tool to visually check the loaded pages and debug problems during test execution.

During script development, the result browser shows you all details about your recently executed script, so you can make sure that you covered everything and that the requests match the real traffic.

When errors occur during load testing, the last moments of the transaction are saved, including the downloaded data and all technical details. You can thus see what was sent and received. When you use the request-ID feature of XLT, you even get a unique ID you can match against your server logs.

Verify Everything

Assertions permit to verify everything

A test is only as good as its verifications. XLT supports and encourages as much validation as possible to really make sure that the pages loaded match the expectations.

You can use the full syntax of assertions known from JUnit and Selenium. If you like Hamcrest, include it, XLT gives you that flexibility. XLT also provides access to all sub-requests of a page, so you can run even more detailed validations.

Scalable

Run load tests from any number of machines, locations, and nearly unlimited users

You can utilize an unlimited number of machines for your load testing. Scale up across datacenters easily. XLT orchestrates the load distribution, uploads, and downloads on its own.

Scale up XLT per machine by bringing up more processes for perfect hardware utilization. Scale up across machines easily by adding more locations. XLT uses differential and concurrent up- and downloads for maximum speed.

The load is automatically distributed across all load-generating agents. If you use heterogenous hardware, you can attach a weight to each machine to indicate a different speed or size.

Installing XLT is easy and only takes a few minutes. It leverages HTTPS and authentication for protecting your agents. Bind XLT agents to any port you wish.

Preconfigured Amazon Web Service Images (AMIs) get you started quickly on Amazon EC2. Just start it and you are good to go.

Configurable

Set timeouts, keep-alive, compression, image loading, permitted hosts, thinktimes, error handling, and much more.

To match the behavior with your testing needs, lots of parameters can be adjusted.

XLT offers a richt set of options to modify the behavior so that all kinds of different configurations can be tested.

Archivable

Open formats for reports and results

XLT uses open formats for results and reports. Perfectly suited for storing them anywhere.

Result data and HTML reports are separated so you can easily make a decision if you want to store a lot of data or just the final outcome. Stored result data can be turned into reports anytime again on any machine.

Reports and results store your full test configuration. Repeating the exact same run days or weeks later is a matter of seconds.