These are from Apple's documentation references on OpenGL but every little bit helps right? ;)

OpenGL Performance Optimization : The Basics
Optimizing OpenGL Data Throughput on OS X

(This last one is a sample application)
Vertex Optimization

There are also a very large number of videos available on the subject (Also from Apple) that talk about OpenGL extensions. Some of them are OS X specific, but a few others are more generalized and could most likely be applied to Windows and Linux.

You can find the videos here. You do require iTunes and an Apple account to view them however (but they are free! :D)