问题
My app runs really slow with Xcode 4.5, and i just realized it's due the debugger always on. It seems you can't select NONE under Manage Schema/Release/Debugger, so how can you disable debugger on Xcode 4.5?
many thanks in advance
回答1:
It is unlikely that the slowness is due to the debugger being attached. It is more likely that the slowness is due to compiling in Debug rather than Release mode. Debug does not optimize the code. Release does. You can switch your configuration to Release and it should speed up, but be more difficult to debug. You can create separate Debug and Release schemes if you like.
Note that the specific difference in Debug and Release that matters here is the compiler optimization. Debug passes "-O0". Release passes "-Os". You could of course create a Debug configuration that passes "-Os" without changing other things (like turning off assertions, if your Release configuration does that).
来源：https://stackoverflow.com/questions/12682658/cannot-disable-debugger-with-xcode-4-5