Re: 64-bit iOS
Re: 64-bit iOS
- Subject: Re: 64-bit iOS
- From: Vincent Habchi <email@hidden>
- Date: Wed, 11 Sep 2013 17:01:38 +0200
Scott,
> No, but it's great to device to access data, perhaps even bits pulled out from a huge pile, and preferably pulled out extremely quickly.
> And, anyway, why shouldn't it be a huge database machine???
I meant, it is not designed to serve as a database machine. I can’t possibly imagine PostGreSQL running on an iPhone, for example, and serving thousand of requests per second…
> As I said earlier, 64-bit enables techniques that are not practical in 32-bit, because you won't run out of address space due to fragmentation.
64-bit address space might mask fragmentation at the virtual memory level, but you will probably experience it at the real memory level, i.e. after the MMU; the more so, since iOS does not support swapping. How much memory does the iPhone 5S have? More than 4 GiB? Probably not. I fear many people will think that with 64-bit pointers they get a lot of usable space, and then see their code crippled by low memory warnings.
Aside from this, I concur it might be handier for Apple to converge all its platforms to 64-bits.
Vincent
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