Is there an ideal number of network operations for iPhone OS?

Is there an ideal number of network operations for iPhone OS?

I'm using NSOperation and NSOperationQueue to handle all of my networking threads so my interface can remain responsive while handling data transfer over the internet. Currently, I've got my operation queue set to a maximum concurrent operation count of 5, and it seems to work well.

I'm wondering, though, if there is a more ideal number of concurrent network operations that would best maximize the available resources without choking the hardware. Are there any recommendations, or steps I might take to measure and find out for myself?

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Given the iPhone (currently) runs a single core, I would guess 5 is around the right number..
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If you are doing large transfers, then more connections probably wont help much.

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