问题
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.
I can profile this with instruments using the "Time Profiler", but is there a way to find what the actual cause is ?
回答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.
来源：https://stackoverflow.com/questions/7388453/how-to-find-the-cause-of-a-100-cpu-usage-on-an-iphone-app