CODEWITHSUNDEEP
iosperformancemonitoringinstruments
Julien
Julien

Reputation: 9432

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

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 ?

Upvotes: 18

Views: 16831

Answers (1)

Alastair Stuart
Alastair Stuart

Reputation: 4185

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.

Upvotes: 43

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