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Apple should just stop using a silly mark & sweep collector. All the good collectors are copying, if you have enough memory. Only on tiny devices you need mark & sweep.

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That "good collector" has higher memory usage, has to pause mutator threads, and makes application code run slower. Thanks, but no thanks.

Copying GC will make swap even less efficient, no?

A Copying GC will not interfere with swap, as it's reserving 2 fixed memory regions, not more. And no stop the world.

All the better systems use that for decades.

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