Battery Life

Battery life on the Sandy Bridge MacBook Pro improved in our two lighter workload tests by 5%, however under heavy load there was no change. Given that we only saw improvements in our two workloads with built in idle time I suspect Lion may have tweaked some power management settings vs. Snow Leopard, but nothing more. The improvements here might be limited to newer architectures or systems with Apple SSDs however, because they definitely weren't echoed on our older MacBook Pro:

The early 2008 MacBook Pro showed around a 20% decrease in battery life in our two web browsing battery life tests. Once again we saw no difference in our heavy multitasking test. Once again I'm guessing this change is due to some tinkering with OS X's behavior at idle. Our performance data above doesn't suggest any performance issues causing lower battery life on the old Core 2 Duo based MacBook Pro, so there's got to be something keeping the CPU out of its lower idle states during our tests. I checked Activity Monitor during the benchmarks and didn't see anything obvious, meaning it's likely a lower level OS issue. Our own Brian Klug theorized that the lower battery life could be due to the Core 2 Duo MacBook Pro now loading Lion's 64-bit kernel by default instead of the 32-bit kernel like it did in the Snow Leopard days.

The impact is pretty significant on the older MacBook Pro. Older mobile Mac owners dependent on battery life may want to wait to pull the trigger on Lion until at least the first point update.

I will add that something very strange happened on one of our battery life runs with the 2011 MacBook Pro. During our Flash Web Browsing battery life test we recorded a full battery rundown that took under 3 hours, instead of the ~7 hours you see above. Once again I checked Activity Monitor to ensure nothing funny was going on and didn't find anything odd. Subsequent runs couldn't duplicate the result either. It's pretty unusual for us to see that sort of run-to-run variation in our tests so it's not totally clear what happened there, other than Lion does seem to be doing more in the background which could impact battery life than previous iterations of OS X.

Performance: Similar to Snow Leopard Final Thoughts
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  • rs2 - Wednesday, July 20, 2011 - link

    Okay, it makes sense on a touch device where your finger is actually making contact with the thing you are scrolling. But a mouse cursor is *not* a finger. It is not an analog for a finger. It is a different input paradigm entirely, and trying to make it behave as if the mouse cursor is your finger by making scrolling go backwards is stupid.

    It's good that they put in an option to disable the nonsense that is "natural" scrolling.
  • name99 - Thursday, July 21, 2011 - link

    Not at all. The issue is simple : what is the metaphor?
    When I move my finger, am I moving
    - the window container? OR
    - the content?

    Claiming that one is more "natural" than the other is as stupid as claiming that English is more natural than Chinese. It's simply that you are used to one and, like a good American, you simply cannot imagine that the world could possibly be different --- after all, Jesus spoke English.
  • rs2 - Thursday, July 21, 2011 - link

    Not at all. There is no "finger" when using a mouse. Touch and mouse-driven are distinct input paradigms. If a touch-based interface ever scrolled content in the opposite direction that the user moved their finger, then people would say that it was broken. And rightly so. Moving content in the same direction as the touch is the intuitive operating mode of a touch interface.

    And similarly, moving content in the opposite direction of the scroll (or more accurately, moving the scrollbar in the same direction of the scroll) is the intuitive operating mode for a mouse-driven interface. By your logic scrollbars themselves should also be inverted.

    As a side-note, a direct analog to touch style scrolling does exist in the mouse-driven paradigm, it is the drag operation. It is available in some things like Adobe PDF documents, and also work on any scrollbar. In this operation you choose an anchor-point, and then that anchor point moves in the same direction that you move, and it all makes sense. The problem with scrolling is that it has no anchor point, it is a distinct operation from a drag operation, and by conflating the two Apple has broken their interface. At least until they start incorporating touch into every computer they sell.

    Mouse-driven and touch interfaces are not the same thing, and just because a metaphor makes sense in one does not mean that it also makes sense in the other.
  • Uritziel - Friday, July 22, 2011 - link

    Agreed.
  • CharonPDX - Wednesday, July 20, 2011 - link

    On page 23 "Performance: Similar to Snow Leopard", you have a couple bar graphs comparing Snow Leopard to Lion performance. Unfortunately, you use a generic "compared to before as 1.0" metric, with no indication on a per-test basis whether higher or lower is better. In the Core 2 Duo graph, you talk about boot time skyrocketing, and the boot time graph for Lion shows Lion as "about 1.4" of Snow Leopard, yet you also talk about iPhoto having a "greater than 10% increase in performance", where the graph shows "about 1.1" of Snow Leopard. So in one line in the graph, higher is worse, in the other line, higher is better.

    You either need a per-test identifier (Higher is better / Lower is better) or you need to to standardize them all (so 'benchmark' ones would stand as-is, while 'timing' ones would use the inverse, so that both would be 'higher is better', or example.)
  • Deaffy - Thursday, July 21, 2011 - link

    Did anyone check to see whether Apple has included a UI element to enable IPv6 privacy extensions for statelest address autoconfiguration?
    And did DHCPv6 to get IPv6 addresses from your ISP's cable via IPv6 finally make it's entry?
  • Deaffy - Thursday, July 21, 2011 - link

    Oh yeah, and maybe the ability to query a name server via IPv6?
  • kevith - Thursday, July 21, 2011 - link

    they are more and more returning to the Linux it came from. Who knows, they might even go bact to open source:-)
  • Omid.M - Thursday, July 21, 2011 - link

    Anand/Andrew/Christian,

    If you right click on a YouTube video, does it say the rendering AND decoding is "accelerated" ? I thought Lion was supposed to bring that.

    If this is now the case, it'd be enough reason for me to buy Lion and a new MBP 15". I can't stand the fans on my 2008 MBP 15 going nuts every time I watch a 30 second YouTube clip. The laptop gets unreasonably hot right now.

    @moids

    P.S. I'm not a fan of the way buttons appear on the upper borders of windows. There's no typical button "design" to signify that the text is clickable, at least not from the screen shots I saw in the article.
  • Omid.M - Thursday, July 21, 2011 - link

    I guess it's disabled:

    http://www.macrumors.com/2011/07/21/adobe-suggests...

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