Now that chx has beaten me to it, I'm going to profile and patch and find all the low hanging fruit to cache in drupal. Here's an improvement to the module_hook function.

I've been playing with callgrind, xdebug, and kcachegrind to profile drupal. I'll go over the details of my results in a future blog entry, but if you want the short story just check out Rasmus's directions. Rasmus has given lots of talks with similar names to "Getting Rich with PHP5" and I'll leave it to the reader to google and find slides from this talk.

Profiling is an iterative process, and after awhile I might blog about it with something more concrete. But for now, I have early results.