NSUserDefaults allocation size and CALayer memory usage
NSUserDefaults allocation size and CALayer memory usage
- Subject: NSUserDefaults allocation size and CALayer memory usage
- From: Henrik Granaas-Helmers <email@hidden>
- Date: Mon, 29 Jun 2015 08:35:16 +0200
Hi there,
I am new to Apple development, and new to this list. I have two questions about memory on OS X.
1. NSUserDefaults seems to allocate 16 MB memory at load. I can't see myself using a megabyte—let alone 16 of those. It would be very interesting to know why it allocates so much, and if there is a way to encourage NSUserDefaults to grab less.
2. I create a couple of CoreAnimation layers that I think are large (5120x2880 px). I would expect that to occupy 450 MB (5120*2880*32/1024/1024) of memory. But instead it only takes up one fourth of that. What is this sorcery?
--
Henrik Granaas-Helmers
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