And has there ever been an iOS update that has made things faster on the same hardware?
I don't think that Apple is intentionally making things slower, which is what I'm trying to say with the JSON parser (it is easy to write a wasteful implementation). But in the big picture, they're not optimising much either.
No doubt about 10.0-10.5/10.6. But that seems to have been an afterthought for the last two OS X releases:
http://www.macobserver.com/tmo/article/os-x-battery-life-ana...
And has there ever been an iOS update that has made things faster on the same hardware?
I don't think that Apple is intentionally making things slower, which is what I'm trying to say with the JSON parser (it is easy to write a wasteful implementation). But in the big picture, they're not optimising much either.