Presentations for the upcoming CMG conference are available on

I am presenting two topics at the Computer Measurement Group (CMG) annual conference this week, and I have just posted the slide decks I will be using on The latest slide deck for┬áMonitoring Web Application Response Times in Windows is available here. And the HTTP/2: Recent protocol changes and… Continue reading

Why is my web app running slowly? — Part 1.

This series of blog posts picks up on a topic I made mention of earlier, namely scalability models, where I wrote about how implicit models of application scalability often impact the kinds of performance tests that are devised to evaluate the performance of an application. As discussed in that earlier… Continue reading

Page Load Time and the YSlow scalability model of web application performance

This is the first of a new series of blog posts where I intend to drill into an example of a scalability model that has been particularly influential. (I discussed the role of scalability models in performance engineering in an earlier blog post.) This is the model of web application… Continue reading