Le 11 sept. 2013 à 11:31, Vincent Habchi <vi...@macports.org> a écrit :
> Mostly, this is not going to change anything. You will see your code size > increase, because unless you use PIC, you’ll have to store 64-bit addresses > instead of 32. There will be more cache misses as your memory space becomes > sparse. It will surely run faster, but not because the bus size has been > increased, but because the number of GPR is doubled, thereby allowing some > optimizations during scheduling and context switching. The increase of GPR is far to be the only architecture change between arm7 and AArch64 (assuming AArch64 is what Apple is using). > But what bother me most, is that I don’t really see the point. A smartphone > is a phone, it is neither a web server nor a huge database machine nor a > supercomputer. Who wants to mmap 5 GiB files on a phone? Which process needs > more than 2 GiB at most? Seriously? Will it make you reading your mail > faster, loading webpages instantaneously? Will your calendar feel snappier? > Besides marketing and advertisement, nobody really needs that amount of > power. We’re not going to simulate galaxy dynamics on an iPhone, or derive > the flow lines around the next fighter of the US Air Force… The iPhone 3S > already delivers a more than sufficient experience for the vast majority of > users. Besides, embedded programming is about optimizing and stuffing the > most in the tiniest space… Thanks for this remainder, but I think we all already know that 620k is enough for anyone… -- Jean-Daniel _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
