The slides from the PHP & Performance tutorial I've given during the Zend's PHP Conference are now up, you can find them at the bottom of my
talks page here. To all the people who have gotten up really early in the morning, thanks for attending and hopefully you've found something interesting for yourself during the talk.
Update: Rasmus has kindly pointed out that stripping while drastically reducing the size (basic binary is about 3x smaller), does not actually impact the startup speed in any measurable speed. A quick test with php-cgi from latest CVS appears to confirm this, so unless you want to save disk space at expense of debug symbols, do not strip! Thanks Rasmus.