[metafizikal]

But iOS doesn't have a concept of swap like a traditional PC OS like macOS or Windows does, does it?

[saagarjha]

No, but iOS can kill apps in the background during times of high memory pressure.

[rhacker]

So it can run xcode for about 4 seconds until the OS decides to kill it?

[saagarjha]

> in the background

[rhacker]

So when you debug your app?

[saagarjha]

Killing Xcode would also end your debug session. Presumably Apple will think that far ahead and grant the necessary entitlements so that this doesn't happen.

[bunnycorn]

Correct, it kills apps before they swap.

[Ivoah]

iOS still runs the darwin kernel. I'd be shocked if it didn't use swap.

[saagarjha]

It doesn't, I believe mostly for reasons of keeping apps from using large amounts of memory in general, and by helping keep write cycles to a minimum.

[glhaynes]

I've always figured it had most to do with keeping responsiveness high and predictable.