It is a fact that end user response time is critical for business success. The faster web pages are perceived, the longer users tend to stay on the page and therefore spend more money and drive business. In order to ensure that end user response times are acceptable at all times it is necessary to [...]

I am doing another Webinar on Best Practices for AJAX Performance Analysis with Andrew Espinosa from Monster.com. Date: December 16th, 2009, 6pm/Noon/9am CET/ET/PT – register here! Monster.com – the worlds leading internet job portal – was challenged with the same AJAX Performance Problems as other Web 2.0 companies are facing. Long page load times and [...]

Lucy Monahan is a Principal Performance QA Engineer at Novell, and helps to manage their distributed Agile process. Intermittent problems can be difficult to solve: the value may be corrupted potentially at any time before the value is used the transaction may involve multiple enterprise servers using remote calls and the root cause could be [...]

I’ve recently been working with several clients to analyze their web site performance with the dynaTrace AJAX Edition. Based on our findings their JavaScript code, usage of 3rd party frameworks, use of AJAX, embedded objects and caching strategies have been changed over multiple iterations. After each iteration it is good practice to verify if the [...]

I have been working with many clients that perform load testing – ranging from small to large scale – using open source or commerical tools. Load-Testing itself has become easier and more affordable due to growing list of available tools as well as the availability of online load testing services. Despite the fact that load testing can be [...]

The Software Test & Performance Conference takes place in Boston this week. The 5 conference tracks cover many interesting areas for software testers: Agile Testing, Test Automation, Performance Testing, Test Management and FutureTest. I will be on-site on wednesday and thursday during exhibition hours. Find me at the dynaTrace booth in the exhibit hall or grab me [...]

Last year at devoxx I gave a talk on common pitfalls in performance management. Parleys has now put the talk online. A couple of people have been asking to get slides. Now you can even get the voice and the slides. In this presentation I give an overview of typical performance antipatterns. I discuss conceptual, [...]

Have you been asked to look into load-testing your software? Have you or are you about to buy one of these “Testing for Dummies” books to get a kick-start in that domain? This blog explains some of the basic concepts, challenges, terminologies and approaches for load testing software applications. It is a summary of the [...]

Testing, Test Automation and Load Testing are critical tasks in the Software Development Lifecycle in order to ensure application readiness and application performance before it gets shipped to the end user. Too much time is wasted in creating different types of tests that are then often only executed manually producing results that don’t get you to [...]

On a recent project I had to call Java REST services from a .NET Client. Several problems came up – ranging from authentication to hidden performance issues. I want to share my lessons learned and encourage you to share your own opinions and experiences on this topic. The Context: REST to automate analysis processes in [...]