site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com On 18 Aug 2009, at 8:17 AM, Joel Reymont wrote: I'm tasked with improving Firefox startup performance on Mac OSX. — F _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... Is there a way to find out what pages of a file are in the filesystem cache? Is this a good list to discuss IO performance? In the spirit of what-have-you-done, is your question based on performance statistics from Shark? Particularly the Time Profile (All Thread States) and System Trace techniques? Does the File Activity template in Instruments tell you anything about locality of access? Second-guessing the filesystem sounds like a world of hurt, dependent on OS, hardware, and differences between runs. Maybe there are in-app strategies that will pay off before you get into it. This email sent to site_archiver@lists.apple.com