Apple has launched a new mailing list for developers interested in the topics of performance analysis and Mac OS X optimization techniques. The new list is called PerfOptimization-dev, and Apple describes it as:
Technical discussions for developers on analyzing and optimizing performance on Mac OS X. Topics include Mac OS X Performance tools such as Shark, performance for development frameworks such as Cocoa and Carbon, graphic performance, Mac OS X Server performance etc..
You can find more information on the mailing list at Appleis mailing list Web site.