Mac OS X - VM Working Set

Hello, I'm studying Darwin kernel and I found some information about working set on Mach Virtual Memory. "The first time that an application is launched in a given user context, the initial working set required to start the application is captured and stored in a file..... /var/vm/app_profile". Why I didn't find this file into my iMac with OS X 10.1.5? Resources: I n s i d e M a c O S X - Kernel Programming -Apple computer, Inc. Thanx Andrea C. _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.