Cocos2D/iOS7: continuously increasing memory usage for boilerplate code

Question

This is what it looks like with iOS7 simulator when application is just running without any user interaction(also I\'m not running any code of mine, only boilerplate Cocos2D):

Answer 1

Not so much an answer as a confirmation: it seems to be a problem specific to iOS 7.0 and cocos2d 2.1.

I observed the same behavior: cocos2d 2.1 on iOS 7.0 simulator increases memory usage over time. And a lot, too, every few seconds by ~1 MB. But let's disregard that, the Simulator is not a real device.

On a device (iPod touch 5th gen with iOS 7) memory is barely going up. Using marked generations over a period of 5 minutes indicates a growth of at most 15 KB. Occasionally there is a block of 10-15 KB allocated but eventually let go, at least most of it. The amount of memory added and sticking around over a 5 minute period is about 5 KB. Not much, but also more than nothing for a template app that doesn't do or respond to anything.

The memory that is added and never released on the device is mostly marked as <non-object> as in the Simulator, with a few CGPath thrown in between. So this may indicate that there could be a memory management issue in cocos2d 2.1 on iOS 7 - though it's too minor to have any negative effect on most apps (~100 KB "leaked" per hour).

Sprite Kit and OpenGL applications as well as running on a iOS 6 Simulator (I couldn't test on a iOS 6 device) don't show any such issue, live bytes remains steady with marked generations reporting no growth at all.

Answer 2

Are you sure you don't have zombie objects enable?

Click on your product -> Edit scheme and at diagnostics tab if you have "Enable zombie objects" checked, uncheck it and try again.

Answer 3

I know this is too late to reply this issue but just leave it here. There is a guy talk about nszoombie, so if you enable debug of xcode with this option, it will cause this issue. Turn it off and check again