I’m trying to profile the EmployeeDirectory app in the Simulator using the CoreData Instruments, as described on Page 207 in the Swift 3 release of the book.
So my Simulator and the Profiler are already open. Now I hit the record button, switch over to the Simulator to scroll up and down a bit. But it seems that nothing was recorded. The Fetches Tool shows nothing at all.
I’m having the same issue. But looks like Apple made some changes to the instruments. Core Data fetches instrument seems to only support OS X now.
Reference: Instruments User Guide: Core Data Fetches Instrument