Thanks to Corey Goldberg, one of my colleagues @ Canonical, the page performance report can now be used on regular Apache log files, rather than just the zserver trace log files that Launchpad’s middle tier generates. We use this report to identify poorly performing pages and get insight into the timing patterns of bad pages. The code lives in the Launchpad dev-utils project – instructions for checking it out and configuring it are on the wiki. If you don’t have aggregate data for your web application, I highly recommend grabbing PPR and checking it out – its very lightweight, and data is extremely useful.