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Load Testing Blogs
Can SAP Related Problems Impact Your Commute?
Just as Walt started the engine the car beeped. He realized he might be out of gas by the time he reached his office in the downtown of Ragpo, Glovania. Luckily he recalled there was a gas station at the main junction just before getting to the speedway. He pulled over and rushed to the [...]
Categories: Load Testing Blogs
AJAX Edition 4: What makes older versions of IE so slow as compared to newer versions of Firefox?
It’s been a while since we released the last major version of Compuware dynaTrace AJAX Edition. With AJAX Edition 4 we introduce the capability to test across all versions of Internet Explorer (IE) starting with IE6 and all versions of Firefox starting with 3.6. Why is this important? Well, check out the test results of [...]
Categories: Load Testing Blogs
Super Bowl Sunday 2013 – Audi vs. Mercedes
Luxury car makers Audi and Mercedes took differing approaches to generating brand awareness during the 2013 Super Bowl: Audi, through its “Prom” big game commercial and subsequent #BraveryWins hash tag campaign on Twitter; Mercedes via its “Soul” big game commercial, featuring a few high-profile celebrities and a very aggressive price point, appealing to a younger [...]
Categories: Load Testing Blogs
Are We Under A DDoS Attack?
Ensuring reliability and security of the IT infrastructure at a bank is not an easy task. It gets harder when the bank is very popular, with many branches spread across the country. The potential sources that can affect the end user experience (EUE) range from the internal infrastructure and the internal banking application through various [...]
Categories: Load Testing Blogs
Speeding up a Pig+HBase MapReduce job by a factor of 15
The other day I ran a Pig script. Nothing fancy; I loaded some data into HBase and then ran a second Pig job to do some aggregations. I knew the data loading would take some time as it was multiple GB of data, but I expected the second aggregation job to run much faster. It [...]
Categories: Load Testing Blogs
Saving MIPS and Money: Automated Mainframe Transaction Tracing and Analysis
For the past decades, mainframe experts have been tasked with tuning their systems, applications, databases and individual DB2 SQL executions. Traditional Monitoring and Application Performance Management (APM) tools provide useful insight to support these tasks. APM for the Mainframe is therefore well established and saves more money by optimizing MIPS and MSUs than these performance [...]
Categories: Load Testing Blogs
Super Bowl Sunday 2013 – Winners, Losers, and Casualties
No matter which team you were cheering for (or if you even watched the game at all), Super Bowl Sunday 2013 was more than a football game. Since the late 1990s, Super Bowl advertisers have tried to successfully link their TV ads to their online properties, sometimes with mixed results. Even 15 years later, companies [...]
Categories: Load Testing Blogs
How I Identified a MongoDB Performance Anti Pattern in 5 Minutes
The other day I was looking at a web application that was using MongoDB as its central database. We were analyzing the application for potential performance problems and inside 5 minutes I detected what I must consider to be a MongoDB anti pattern and had a 40% impact on response time. The funny thing: It [...]
Categories: Load Testing Blogs
LoadRunner Password Encoder and lr_decrypt()
If you ever need to disguise a password in a VuGen script, you will no doubt have used the lr_decrypt() function. If you have stopped to think for a second or two, you will have realised “encrypting” the password in your script doesn’t make it more secure in any meaningful way. Anyone with access to [...]
Categories: Load Testing Blogs
Bad Performance Testing
As a performance testing consultant, I get to see a lot of the work that other performance testers do…and a lot of the time it horrifies me. If performance testing was a licensed profession, like law or medicine, then it would be necessary to revoke the licenses of 90% of testers. Their work is not [...]
Categories: Load Testing Blogs
