Getting ready for a big event on your website? Re-architecting for better performance or scalability? Releasing a hot new feature? Load testing can help you plan and provision accordingly. In this talk, I'll briefly discuss load testing strategies, then dive into how to DIY with Python using Corey Goldberg's open source library multi-mechanize as well as how to gather performance data from your tests. Real-life examples against a deployment of a popular open-source Python web app (reddit!).