The Technical Side Of Windows 8

As we mentioned in the opening of this article, the single biggest addition to Windows 8 coming from Windows 7 will be Metro. Microsoft’s last major overhaul of Windows’ underpinnings was Windows Vista, and like Windows 7 before it, Microsoft is not looking to significantly alter the operation of the Windows kernel or related systems for Windows 8. With that said this doesn’t mean that there aren’t any technical changes that will ship with Windows 8.

Fundamentally Microsoft wants to keep the system requirements for Windows 8 the same as Windows 7, which means it needs to run (with varying definitions of “smoothly”) on a 1GHz CPU paired with 1GB of RAM and a DX9 class GPU. Realistically as their published requirements stand there is one difference from Windows 7: Windows Display Driver Model (WDDM). Windows 7 would work with older XPDM drivers (albeit without any of the benefits of WDDM), however Windows 8 specifically mentions WDDM as a requirement. This makes sense given the greater reliance on the GPU for Metro, but it also means there are going to be some machines out there using very early DX9 GPUs (e.g. Intel GMA 900) that won’t be able to run Windows 8 due to a lack of video drivers.

In any case the addition of ARM into the mix will be sure to spice things up., While Microsoft is optimizing Windows 8 to run on ARM CPUs there’s a vast range of ARM CPUs, and this is the full version of Windows. Microsoft’s current system requirements are easily discernable as x86 based, and we’d expect the ARM requirements to be fairly high to keep pace. Give the launch of quad core ARM SoCs later this year, it’s likely that will be a popular pairing with Windows 8 when it launches.

On a final note about system requirements, while Microsoft isn’t talking about specific versions of Windows 8 at this time, they’ve made it clear that x86 will live on for at least one more generation in order to fulfill their desire to have Windows 8 run on everything Windows 7 ran on. So x86 versions of Windows should be expected.

Moving on, as this was a press session as opposed to a technical session, Microsoft was a bit light on the details. We’re expecting quite a bit more in the next couple of days, but for the moment we’ve only been briefed on a few user-facing technologies that are new to Windows 8.

On the hardcore side of things, Microsoft has added a few tricks to Windows in order to keep memory usage from growing and to make the OS better suited for tablets. On the memory side they have added Page Combining, which will combine duplicate memory pages into a single page. This is primarily to reduce the overhead from multiple applications all having copies of the same shared resource by having applications outright share that resource’s memory pages. Page Combining will primarily be a tool for reclaiming memory when memory usage is approaching critical levels.

For making the OS better suited for tablet hardware, Microsoft has focused on small changes that can help the hardware sleep longer and wake up less often. Coalescing system timers and a dynamic tick mechanism are two such features that will be coming to Windows 8 (unfortunately we don’t have any more details on their function at this time). Meanwhile Metro will play a big part in making Windows tablet friendly, as Metro applications will be designed from the start to be able to handle phone/tablet style process management. This is to say that discarded applications will continue to stay open as a background application, having all of their memory pages intact but unable to schedule CPU time so long as they’re a background application. They’ll remain in this state until the OS decides to evict them, at which point they need to be able to gracefully shut down and resume when the user re-launches the application. Internally Microsoft calls this freezing and rehydrating an application.

The Windows Store The Technical Side Of Windows 8: Cont
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  • UMADBRO - Wednesday, September 14, 2011 - link

    Nah, they are fairly arrogant over there too. If you want to stay firmly rooted in the past, then dont upgrade. Otherwise, adapt and move on. Simple as that.
  • UMADBRO - Tuesday, September 13, 2011 - link

    Good luck. All I hear on here is the gnashing of teeth, because ,*gasp*, people might have to try something new. I can already read the reports of people collectively croaking, still clutching their copies of Win 3.11 in their cold, dead hands.

    Seriously, give it a goddamn shot before you automatically decide you hate it, you close minded asshats.
  • Exodite - Wednesday, September 14, 2011 - link

    What's your angle?

    Serious question, as I find it inconceivable that a mere user - let alone someone that's actually never used the discussed software - are so adamant about defending it to the point of absurdity and personal attacks.

    Needless to say I have a theory myself but I'd rather hear it from you.
  • UMADBRO - Wednesday, September 14, 2011 - link

    I just dont get why people wont even give something new a chance before they absolutely hate it. Its just retarded, IMO. Give it a chance. If you dont like it afterwards, then thats fine. At least you tried it.

    Personally, I have the dev version downloaded and am going to keep an open mind when I give it a shot. If I dont like it afterwards, I wont hesitate to let people know why I dont, with an actual reason why, instead of going around blaring "Herp its stupid derp I dont like it" and not having ever booted it up one time.
  • UMADBRO - Wednesday, September 14, 2011 - link

    And please, pray tell your "theory" as Im not really defending it as much as letting people know what I think of them for being narrow minded.
  • frozentundra123456 - Tuesday, September 13, 2011 - link

    I have to say I hate this interface too. Why does microsoft seen to want to make everything look like a smart phone (or a cash register at McDonalds!!).

    This touch interface might be OK for a laptop or tablet, but I cant imagine sitting at your desk and using it on a separate monitor. It would be like doing a continuous series of sit-ups as you move closer to the monitor to touch it and back away to read it, not to mention finger prints everywhere.

    Unless you can easily turn off this interface and go back to a conventional desktop, this would be a deal breaker for me as to buying a computer with this OS.

  • TEAMSWITCHER - Tuesday, September 13, 2011 - link

    There has been much mobile OS development in the last 5 years with iOS, Android, WebOS, MeeGo, Symbian, RIM, etc. A lot of design ideas for touch screen OS's have already been copyrighted, trademarked, or patented. Microsoft bought a scrappy little company called Danger that made the Metro UI, and it may be the only thing they can do now that wouldn't infringe on the IP of established players.

    Microsoft has a big problem here. Desktop power users won't use the Metro GUI because it would just slow them down. And new Windows 8 Tablet users (running ARM processors) can't run applications from the existing Windows universe. Microsoft is trying to leverage the broad appeal of Windows in the mobile market, but this is pretty weak leverage.

    Finally, that touch interface looked like a complete failure. How many failed swipes to open/close a fly-out menu can a human being endure? Be careful Microsoft, this is starting to look a lot like Vista!
  • cjs150 - Wednesday, September 14, 2011 - link

    "It would be like doing a continuous series of sit-ups as you move closer to the monitor to touch it and back away to read "

    You have got it. MS enters personal fitness market!
  • Belard - Tuesday, September 13, 2011 - link

    I hope MS already knows how to handle this...

    The mouse wheel should fly the tiles left to right. Sure the wheel is pointed in the wrong direction - but its not hard to figure out and besides - a HOR. mouse wheel won't work. Even Logitech's wheels that have side to side scrolling just sucks.

    Anyone with a rotating monitor (or manual rotate your whole monitor) can try this. Go to an image site that has normal up and down scrolling. Make your browser long up and down.... then use your wheel to move the whole page of photos (pretend they are tiles).

    Or turn your head to the side.
  • Sladeofdark - Tuesday, September 13, 2011 - link

    the interface looks hideous just like phone 7 does. i just dont get it.. its like they HAVE to mess up every other OS. i can see how the metro tile theme could be good for old people , or my older brother whom is not tech savy. But it should not be the MAIN way of using the OS. I hope it doesnt make it like Aero really didnt "make it" into vista.. but Vista was still garbage. gosh.. this love hate back and forth thing is bad for my heart lol.

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