ios - How to track down which operation is low down the launching process? -

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it takes long duration of time app launched. how can track down operation causes trouble?

your best option use time profiler part of instruments.

you can press cmd + i start profiling application. select time profiler.

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this tool records how long each call takes , can use narrow down parts of code causing biggest problems.

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double clicking entry show calls within method , how long each take

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i find useful select these options in "call tree"

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