Here's the abstract:
You probably already collect performance data, but data ain't information. Successfull scalability requires transforming your data so that you can quantify the cost-benefit of any architectural decisions. In other words:
measurement + models == information
So, measurement alone is only half the story; you need a method to transform your data. In this presentation I will show you a method that I have developed and applied successfully to large-scale web sites and stack applications to quantify the benefits of proposed scaling strategies. To the degree that you don't quantify your scalability, you run the risk of ending up with WTF rather than FTW.