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Comment by culturestate | Hacker News Reader

> The spokesperson is talking out of their ass regarding performance.

I'm fairly certain that this statement was vetted by Craig Federighi himself or, at minimum, a high-level engineering manager.

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Both statements could be true - I wouldn't be too surprised to see Apple stretch the truth; yes, it's true, performance on a 25 second boot (my iphone 6s) from cold was improved to 24 seconds. Doesn't really move the needle, but still true, to some degree. A second here, and a second there - starts to add up though, particularly on boot up, for those of us who end up doing that multiple times a day.

Also, in general, any time you can remove code from a system, that isn't contributing in any meaningful way, is just a good thing to do - both from reducing attack surfaces, as well as general reduction in code size, and the advantages that come along with that.

iOS 10 running on my iPhone 6S Plus is currently booting in about 5 seconds. Not sure how though...

Also that's when I hold down the home and lock buttons, in order to force-reboot. Perhaps now that doesn't fully reboot the phone.

I was curious so I benchmarked "decrypting" kernelcache.release.n66 on an iPhone 6S and it took about 60 milliseconds to decrypt. It wasn't encrypted in the first place so the decryption results in garbage, but it should be a valid benchmark. The quick boot time with iOS 10 sure is nice, but it isn't because the kernel isn't encrypted.

https://gist.github.com/jevinskie/40df60e3e9d76ad05304be9bd5...

Have you tried powering down (Hold down Lock Button). And then Powering up?

Or the guy in the marketing department that "knows about the techy stuff".

thanks for the confirmation.

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