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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  • Zan Lynx - Wednesday, September 14, 2011 - link

    Interesting isn't it, that Microsoft has made versions of Server 2008 that don't have a desktop.

    I haven't run a server with a GUI in the last 12 years. Who would?

    Text file based configuration that can be remotely managed, programmed and monitored entirely by script...

    Using a GUI to point and click is horribly inefficient and doesn't scale to more than two servers.

    Real sysadmins don't do pretty. They want it to work. Real sysadmins don't spend time clicking GUI buttons configuring new machines. They boot them and they auto-configure from the network. You never touch a GUI. Just the power button.

    You might use a GUI to configure one user as a template in Active Directory. You'd never use the GUI to add 100 new employees to the system.

    The real use for the GUI is to distract the management while you get real work done behind the scenes using a laptop and an SSH command line.

    A GUI for tiling your command windows might be acceptable. Barely.
  • smithg5 - Wednesday, September 14, 2011 - link

    My point wasn't that all sysadmins use GUIs now, but that the GUI hasn't gotten in the way of sysadmin work on a command-line, even though in most cases for Windows it starts up with the computer. This is a useful analogy for all these fears about Metro in a business environment.

    That said, most of the volume Microsoft sees for Windows server is that "two servers" size environment. Most businesses don't even have 100 employees. For the rest you'll still have your desktop, and that desktop will still have a command-line interface. And hey, they might even make desktop-less, Metro-less versions for the enterprise. If they don't, it won't somehow make your text-file configuration, CLI remote administration wizardry stop working. You'll just be a couple of clicks from that when you start up your server/laptop, and then you'll have something pretty to look at during your breaks. Those servers that you never see the desktop of will benefit from a smaller memory footprint. What's the problem?
  • piroroadkill - Thursday, September 15, 2011 - link

    No, not really. For the vast majority, the gui represented a way to use a computer that made sense to more people.

    Metro is just a kind of gui, but heavily designed around touch and full screen tablet style use.

    It's simply a bad fit for desktop users. I tried the dev preview, and I'm not impressed in the slightest.

    This time, it isn't about resisting change for the sake of it. Really. The dev preview is seriously quite bad. Keyboard and mouse wise, it just sucks.
  • TEAMSWITCHER - Wednesday, September 14, 2011 - link

    I've got the Developer Preview Up and running on a machine and I must say that I absolutely hate it! Whenever I click on the Windows Start Icon (lower left corner) you go to the Start Screen (METRO GUI), the Start Menu is gone! That's just not cool. Also the full screen metro apps are real easy to get lost in, it's begging for some kind of Mac OS X like Mission Control to see all running processes. There is no Back Button, I have to hit the Windows key to get back to the Start Screen. The Desktop (which has been standard on every Windows machine since the dawn of time) is now a strange bolt-on appendage to the METRO GUI experience. I don't know...this isn't beta yet and things may change....but so far consider me one totally pissed off Windows user...this shit isn't Windows. Feels more like Vista meets Bob. Oh, and calling icons "Charms" is gay.
  • UMADBRO - Wednesday, September 14, 2011 - link

    Well, at least you tried it. But try and remember, this is still a pre-beta, and isnt finished yet.
  • Icehawk - Wednesday, September 14, 2011 - link

    What are they trying to achieve? If it is one OS to rule them all I think they are making some serious mistakes as I do not believe traditional computing will be dominated by cellphones or tablets, they serve a much different function and will continue to do so indefinitely IMO. The apparent dumbing down of the OS to mimic a smartphone seems like a terrible idea to me.

    *Assuming* the desktop/Metro experience isn't radically altered the paradigm shift to right-hand panes (ie, the "charms" menu) makes no sense, for the last 10-15 years we've worked from the left. Works fine if I'm using a tablet but that is it - on a desktop nothing could be more jarring. Especially when it isn't uniform, for example the Start menu still pops up on the left. Ugg.

    Also why does anyone think I want a touchscreen on my desktop? How am I supposed to reach it my arms are not 3' long! I guess we'll be forced at the least to use multi-touch pads? I hope it will work in tandem with a mouse since I'm not sure how the hell I'd game using a touchpad.
  • Shinya - Wednesday, September 14, 2011 - link

    Microsoft,

    I really dont care for Ubuntu (lack of support and games) and OSX (lack of games, software, etc etc)

    Please don't make me switch.

    give us the ability to turn off Metro when it releases
  • ct82fl - Wednesday, September 14, 2011 - link

    I think if Microsoft really wants to succeed in the tablet market with their OS, they really need to figure out a new innovative way to navigate. I saw very similar things to Apple's OS and iOS. In order to beat the competition they are going to need to figure this out and figure it quickly.
  • cyberguyz - Wednesday, September 14, 2011 - link

    Sorry but I am a power user of my computers. I don't want them looking or working like a tablet or my iPod.

    While I am usually on the bleeding edge with Windows, from beta onward with each release, this is one I am most definitely sitting out. It does not appeal to the way I want to use my computer at all. For a tablet that I am not expecting to use for heavy input or output, Win8 is just too cumbersome and tied to mouse or touch as primary inputs.
  • Rand - Wednesday, September 14, 2011 - link

    A few suggestions, make CERTAIN your applications all have different names. If your applications have an uninstall.exe they will all be grouped together on the start screen with no way to differentiate them or tell which is for what program.
    Similarly, if your apps have a config.exe you won't be able to tell which is for which without opening them individually. Any executables must have clearly differentiated names that indicate precisely what they are.

    Also, you absolutely must trim down your bookmarks to only a handful. If you're accustomed to having a 100-200 bookmarks in various folders in your browser, that isn't going to work well at all in Windows 8. You'll end up with screen after screen after screen of bookmarks.
    I don't think it's remotely practical or usable any longer to have more then a dozen bookmarks at the most.

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