Alois Reitbauer

Alois is Chief Technology Strategist of Dynatrace. He is fanatic about monitoring, DevOps and application performance. He spent most of his professional career in building monitoring tools and speeding up applications. He is a regular conference speaker, blogger, book author and Sushi maniac.

Alois Reitbauer's articles

Week 9 – How to Measure Application Performance

Measurement is the most central concept in any performance-related activity. If you are not measuring you are blind. As important as measuring per se is collecting the right measurements. Which metrics are the right ones depends on what you want to do. However, there are some general principles which – when followed – can make your life much easier. Many people think that measuring application performance means measuring… read more

Week 23 – 7 Rules to Improve your Application Performance Practices

In this post I discuss the seven most important steps to improve your application performance practices. These simple-to-follow practices will help you to improve the way you deal with application performance. Besides eventually improving the performance of your applications it will help you to avoid playing the classical blame game which normally happens when something goes wrong Rule 1 –… read more

Week 16 – Who is to blame for bad application performance?

When something goes wrong who’s to blame? In this post I take a closer look at who is responsible when applications have performance problems. Interestingly very often the question as to who is responsible is at least as important as how to solve the problem. In order to not have to search for the responsible person all the time I aim to find a general rule on who is responsible… read more

Week 22 – Is There a Business Case for Application Performance?

We all know that slow performance – and service disruption even more – affects our business services and eventually our revenue. At the same time we say that major parts of companies are not willing to invest in performance. In this post I will discuss why we find ourselves in this paradox and how to escape it. Applications fail and management does not care dynaTrace… read more

Week 14 – Building Your Own Amazon CloudWatch Monitor in 5 Steps

Amazon EC2 offers the CloudWatch service to monitor cloud instances as well as load balancers. While this service comes at some cost (0,015$/hour/instance) it offers useful infrastructure metrics about the performance of your EC2 infrastructure. While there are commercial and free tools out there which provide this service, you might not want to invest in them or add another tool to your monitoring infrastructure. read more

Week 15 – Optimizing Data Intensive Web Pages by Example

Lately I was checking out ShowSlow. The site is really great. It combines YSlow and PageSpeed metrics and visualizes them in a really nice way. When I clicked on the URLs Measured Tab I had to wait quite some time until the page finished downloading. While this page is really displaying a lot of information, I still wondered… read more

Week 8 – Challenges in Tracing JavaScript Performance by Example

In an earlier post I already discussed several approaches towards end-user experience (or performance) monitoring including their pros and cons. In this post I will present a simple real-world sample which shows the limits of performance traceability in AJAX applications. As I don’t like Hello World samples, I thought I’d rather build something a bit more useful. The sample uses the… read more

Week 7 – Applying Maslow’s Pyramid to Application Performance

This time I take an a bit unconventional approach towards defining performance management. The idea for this post came through a number of customer engagements, where the same question came up over and over again: “How do we start with Application Performance Management and what should we do?” Over time I developed a simple model which I called the performance management pyramid. The basic idea is to assign… read more

Week 6 – How to Make Developers Write Performance Tests

I had an interesting conversation with our Test Automation team lead Stefan – who Andi interviewed for our “Eating our own Dog Food ” article – on his experiences with the willingness of developers to write performance tests. I asked a provocative question: do developers really want to write them in the first place? First he smiled but then he said that they do. read more

Week 5 – Hunting Lost Treasures: Understanding and Finding Memory Leaks

Searching for memory leaks can easily become an adventure – fighting through a jungle of objects and references. When the leak occurs in production time is short and you have to act fast. Like in a treasure hunt, we have to interpret signs, unravel mysteries to finally find the “lost” memory. Memory leaks – together with inefficient object creation and incorrect garbage collector configuration – are the top memory problems. read more