Memory leaks in GC or something else on iOS

Hello.

I am making a game by Adobe AIR for iOS. My application has a memory leak bug with using only iOS.

So, I have some questions.

• Why is it different using memory size of between Scout and Instruments VM Tracker (Dirty size) ?
• Why is the difference increased between Scout and VM Tracker?
  • I think, AIR makes memory leaks on GC when iOS alerts a low memory warning.
• Can I catch GPU memory size ?
  • Rendering mode is 'gpu'.
  • I don't use Stage3D.
  • I think it is 'IOKit' dirty size of VM Tracker. Its right?

Scout gives no memory leaks. Instruments VM Tracker gives 50MB leaks for 20min.

1min ago. 162MB

20min ago. 162MB

Instruments 220MB -> 272MB

Scout overhead memory was about 1kB/min increasing.

I am sorry I have no small code to reproduce.

Environment:

iPad mini iOS7.0.4

AIR 3.9.0.1030