iOS Instruments Allocations Net/Overall

Question

I have been tested my app with instruments allocations and get this picture: Like graphic shows, my app work normally, but is it normally value in overall bytes? And I'm worry about "#Allocations (Net/Overall)", because it's color is red.What is it mean (red color)

Answer 1

Red is the total (Overall) allocations made and deallocated during all your App's runtime.

Purple (really thin bar over the red one) are the allocated and not yet deallocated objects.

I would say that you don't need to worry too much about it, specially for internal objects or Malloc, and focus indeed on higher level objects such as views and controllers.

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Also if you click on the Allocations tool's i you can choose to ignore CF (Core Foundation) or Malloc allocations, which I often do as you don't normally deal directly/don't have control over those allocations.

Again as you improve your higher level objects allocations you'll be indirectly improving those underlying allocations as well.