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Klaus Enzenhofer

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Top Stories by Klaus Enzenhofer

You don't agree with that? Have you ever looked at the details of your page load time and analyzed what really impacts Page Load Time? Let me show you with a real life example and let me explain that in most cases you only control 1/3 of the time required to load a page as the rest is consumed by third-party content that you do not have under control. Be Aware of Third-Party Content When analyzing web page load times we can use tools such as dynaTrace, Firebug or PageSpeed. The following two screenshots show timeline views from dynaTrace AJAX Edition. The timelines show all network downloads, rendering activities and JavaScript executions that happen when loading almost exactly the same page. The question is: Where does the huge difference come from? Timeline of web page with and without third-party content showing a difference of 8 seconds in total page load time ... (more)

Case Study: Too Fast for the User

I just heard an interesting story from Runtastic, who is one of our Mobile Real User Monitoring customers. Runtastic's main mobile app allows their users to track their sport activities such as running, biking, hiking or skiing. They had a user complaining about too high speed. He didn't actually complain about the performance of the app but instead complained about his average speed during his workout as calculated by the app. After his one hour biking session, the app showed the he covered a distance of 490 km - that would probably be a world record and give him the yellow shir... (more)

The Difference Between Winning and Losing Mobile Shoppers

Mobile performance will make or break retailers this holiday shopping season - so the importance of application performance management (APM) cannot be underestimated. The convergence of Black Friday, Cyber Monday, Hannukah and Christmas shopping combined with a record level of mobile shopping is creating a perfect storm many companies have never weathered before. Over the coming weeks it will be clear which e-commerce players have read our previous blogs and employed a smart APM strategy. That strategy has to include load testing and web performance optimization in the preparation... (more)

Fact Finders: Sorting Out the Truth in Real User Monitoring

On my recent visits to Velocity, WebPerfDay and Apps World in London, Real User Monitoring (RUM) was the hot topic. That triggered my thinking about the differences between vendors. They all promise the same for a varying range of prices - from free to a couple thousand US dollars. What I found out is that there IS a big difference and - depending on what you want to do with RUM - you want to make sure you understand the capabilities and limitations of the available solutions. The false claim of 100% Coverage What all vendors claim to do is capture data from 100% of your users. Wh... (more)

What to Do If A/B Testing Fails to Improve Conversions?

A/B and multivariate testing are often used to improve the conversion funnel. What these tools do is randomly place alternative change images, text or other design elements to gather statistics about how these things affect site visitors. Companies have had great success using such solutions, but sometimes multiple rounds of testing still produce inconclusive data: changing the color or image on their pages did not have a significant impact on the overall conversion rate. Does this mean that there is no way for that business to improve the conversion funnel? In these cases, mark... (more)