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Detailed Technical Look at Mac OS X 10.6 Snow Leopard

Ars Technica's John Siracusa has posted an exhaustive review of Mac OS X 10.6 Snow Leopard that delves deep into some of the technical changes behind Apple's latest operating system. The 23 page review covers topics that were previously covered under developer non disclosure agreements.

Siracusa covers technical topics such as Grand Central, OpenCL, as well as the typical user interface tweaks. They also explain why Mac OS X 10.6 does not boot into 64-bit mode and why you shouldn't really care:

If it makes you feel better to know that your kernel is operating more efficiently, and that, were you to actually have 96GB of RAM installed, you would not risk starving the kernel of address space, and if you don't have any 32-bit drivers that you absolutely need to use, then by all means, boot into the 64-bit kernel.

For everyone else, my advice is to be glad that K64 will be ready and waiting for you when you eventually do need it -- and please do encourage all the vendors that make kernel extensions that you care about to add K64 support as soon as possible.

Siracusa also explains that many of the underlying changes in Snow Leopard are to push developers into the right path for the future of Mac OS X, and the $29 price is meant to help drive user adoption. He also speculates that Snow Leopard is a prelude to radical new features in the next revision of Mac OS X.

As for the future, it's tempting to view Snow Leopard as the "tick" in a new Intel-style "tick-tock" release strategy for Mac OS X: radical new features in version 10.7 followed by more Snow-Leopard-style refinements in 10.8, and so on, alternating between "feature" and "refinement" releases. Apple has not even hinted that they're considering this type of plan, but I think there's a lot to recommend it.

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32 months ago
Wow Snow Leopard was just released and they are already talking about how this is a prelude to the next mac-os .. It never ends, that's what's makes Apple who they are.
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32 months ago
Booting 64bit by default would be a better way to encourage vendor adoption I would have thought?
Removing the silly hardware restriction (and destroying their computer division?) would be a better way to increase user adoption too? :)
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32 months ago
He has some time on his hands! :eek:
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32 months ago
Biggest review ever. Worth a read if you have plenty of time to spare.
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32 months ago
Interesting. I doubt they'll do a tick-tock release of OS's though.

If they were to do such a thing again, then even charging for it could be questionable. It'd appear to people that 10.7 would pretty much be a $129 public beta, then 10.8 would be a $29 upgrade to get everything optimised and streamlined.
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32 months ago
Siracusas OS X-reviews are almost as good and enjoyable as the actual OS is :)
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32 months ago
I don't know if I like that how OS X is going to be in a cycle of new features, then a new version that is just refinements.

I thought Snow Leopard was refinements, and from now on Apple will deliver new features (with no need to refine, because the features should be optimized already).

Apple should just make every new feature with its best software team and leave no room for unnecessary or inefficient code.
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32 months ago
I've read a couple sections of the review so far and I've really enjoyed it. I'll finish it up at lunch when I have more time.

I really like his insight on QuickTime X. He talks about how QuickTime X is like how OS X was when it was first released.
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32 months ago

Wow Snow Leopard was just released and they are already talking about how this is a prelude to the next mac-os .. It never ends, that's what's makes Apple who they are.


Hasn't each version of Mac OS X been a prelude to the next?
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32 months ago
Hi,

If 64 Bit is still on the horizon then why were the long ago G5's touted as being 64 Bit? Was it a marketing thing on IBM/Apple's part?

s.
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