How to find the cause of a 100% CPU usage on an iPhone App

Question

I\'ve diagnosed a strange behavior in an app : after 10 minutes or so, the CPU usage goes to 100%. There\'s no leak in the app, and it happens while the app is doing nothing.

Answer 1

When profiling with Instruments (Time Profiler), look to see what method is using the majority of CPU time. Trace the calls back to see why.