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I have some code that runs slowly when I test it on an iPhone 4. I am thinking about researching Grand Central Despatch and using a background thread for some tasks. However, I understand that the iPhone 4 is a single core device. Does this mean there will be no benefit on this device to using a background thread?
I couldn’t find much in Apple’s documentation about different device capabilities in this regard and am new to background processing.
Yes as long as its running iOS 4 or later. GCD is a good design in that it can be used equally well on single core machines all the way up to 16 Core Mac Pro’s. In fact Apple emphasized this when they introduced GCD. If your code is well written it should work equally well on a single core iPhone as well as multicore iOS Devices out there. Theoretically you should see performance improvements on multicore devices over the single core devices.