Load Testing Blog

Upgrading repositories from 6.5 to 6.6

I’m more than a little proud that we have been able to keep our repository format backwards-compatible for the entire life of the product, with only a few minor bumps along the road. Unfortunately, that streak has come to an end. Thanks an oversight on my part in reviewing the compatibility of a 3rd-party library, some 6.5 repositories cannot be upgraded to 6.6 without some effort on your part.
TLDR: If you don’t use real-browser testcases, you get a pass – just upgrade as usual. Otherwise, before installing 6.6, open your repositories in 6.5 and delete all replays and load test … Continue reading »

Instant Load Engines Retired

Beginning with the 6.6 release, we will no longer be producing our Instant Load Engines ISOs.

Generating Load from Multiple Regions – Load Tester 6.6

Load Tester’s cloud load generation feature includes the ability to use datacenters located in different geographical regions.
This post contains detailed steps for adding an Amazon EC2 account and for running a new test configuration. These instructions apply to Web Performance Load Tester 6.6 and up. For Load Tester 6.5 and earlier, see Generating Load from Multiple Countries – Load Tester 6.5.
Why Load Test From Multiple Regions?
Generating load from different regions enables more realistic load tests. Rather than using just local datacenters, tests can simulate traffic from all over the world rather than just local datacenters.
This feature also allows testing … Continue reading »

Load Testing with Microsoft Edge

Last week Microsoft rolled out Windows 10, which includes the new Microsoft Edge web browser. We can hope that Microsoft Edge will leave behind many of the issues that plagued Internet Explorer and deliver a modern browsing experience competitive with what we’ve come to expect from Google Chrome and Firefox.
Currently, Web Performance Tester supports Internet Explorer, Mozilla Firefox and Google Chrome as it’s three “top-tier” browsers for HTTP capture (virtual browser) testing and Google Chrome as the only supported browser for web driver (real browser) testing. But you can record and run load tests with Microsoft Edge today, and … Continue reading »

REST/Web Services and API Load Testing

In this post, I’ll discuss why API testing is important, a typical situation that a tester might experience, and how to perform API testing with Web Performance Tester.

OSX Load Tester 6 Beta Known Bugs and Workarounds

As a long time Apple/Mac user I’m gratified to see our OSX download numbers creep up to 20%! Unfortunately with fewer people using the OSX version the first couple of releases had less outside bug reports than the Windows version, so thanks to all of the OSX users who’ve taken the time to send in bug reports so I can fix the issues.

Web Performance Tester 6.5 release

If you’ve been following the quick pace of development of our real-browser features, we know you’ll be excited about these new features:
Extract values
Data in the browser can now be extracted into a user state variable for use later in the testcase.  Read more…

 Organize testcase steps
The steps in real-browser testcases can now be organized into hierarchical groups for better readability and easier maintenance. Read more…

Improved selection from choice boxes
Drop-down choices now support selection by position in the list (i.e. index) and by the option value (a hidden attribute in the HTML). Continue reading »

Cookie Debugging From the Testcase Editor in Web Performance Tester 6.5

Load Tester 6.5 adds a quick and easy option for inspecting cookies in your testcase, and reviewing how they are used in a replay. Starting with Load Tester 6.5, the testcase editor adds two new columns: Cookies Sent (by the browser, to the server), and Cookies Received (by the browser, from the server). To enable these columns, simply select Options -> Columns.

The columns will display the number of cookies present in a transaction. In the case of a web page, it will identify the number of unique cookies sent or received. Simply hover over for a tool-tip, which will … Continue reading »

Automated Choice configuration in Web Performance Tester 6.4

When building a testcase to simulate your users, at some point, you’ll want to ask how much variation you can add to your testcase. Real users may be doing searches, but there’s a good chance that your users are using different search terms. Likewise, users may be entering records, but most likely not every record should be entered identically. Every version of Load Tester & QA Tester support the use of datasets, to make it easy to create a list of terms, which can be supplied back as a virtual user traverses their workflow. However, for drop-downs or radio buttons, … Continue reading »

Best Practices for Recording a Testcase to Work the First Time

Sometimes, HTTP testcase don’t work immediately after being recorded. Your application may require special configuration, or your workflow may need some special data entry in order to work in a repeatable fashion. However, sometimes the problem can be compounded by easily avoidable conditions.
Recommendation 1: Close unnecessary applications while recording
During recording, Load Tester will capture HTTP and HTTPS network traffic from your workstation as you record. This allows Load Tester to observe your recorded browser window, and child windows that may be spawned from it. If you have other browser windows open, e-mail clients, etc, these can all interfere with the … Continue reading »


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