Multi-tasking

It is somewhat ironic that I would praise Apple for the multi-tasking capabilities built into OS X, given that the Mac OS trailed Windows in its support for preemptive multi-tasking. Needless to say, the mistakes of yesterday are not true of OS X today, and its multi-tasking prowess was my biggest draw to it.

Multi-tasking under OS X works just like it would under Windows; you have multiple applications open, some of them doing things concurrently, while others are waiting for your input. I will address the two types of applications in a multi-tasking scenario separately.

In the case of applications running at the same time while performing tasks concurrently, OS X does one thing very well that Windows does not - the foreground application is never intruded upon by any other application that's running. Say you're encoding a video and typing a document in Word, should a dialog box popup in the encoding application, it will do it without shifting the window focus to that application. Instead, the dialog box will pop up in the background and you're free to dismiss it when you're ready and willing. It is all too often that Windows left me annoyed by a dialog box taking focus while I was typing a message to someone online or writing a document.

OS X has been designed to be as unintrusive to the user as possible. For that reason, one of the basics of the Windows interface is not echoed in OS X. While double-clicking a file or folder will open the item, hitting "enter" when one is highlighted will not cause the same effect. Instead, if you hit "enter" on a highlighted item, you'll be able to rename the item. In order to launch the file or open the folder via keyboard, you have to hit Command-Down Arrow (Command-Up Arrow will traverse up a folder tree). This takes a bit of getting used to and if approached with an open mind, you can get used to it in a couple of days, but it can be frustrating at first - especially if you are a keyboard addict used to Windows.

Another way in which OS X allows for less intrusive multi-tasking is in its ability to let you close a background window of an application other than the one you're currently working in without shifting focus to that application. Say that I have a browser window open behind a Word document that I'm typing. I can hover over the red close button on the browser window and click it without actually shifting focus away from the Word document - I can continue typing away right after clicking the browser's close button without any additional mouse use.

Next, there is the more frequently used type of multi-tasking, where multiple applications are open and the user switches between them. I've already mentioned that OS X has the equivalent of the Windows ALT-TAB functionality; the task switcher is activated by holding down the Command key and hitting "tab" to sequence through all of the open applications. Releasing Command activates the selected application and everything continues as it would under Windows.



Command-Tab in action. The more applications that you have open, the smaller each icon becomes as the Command-Tab list grows in size.


There is also the equivalent of the taskbar, which in OS X is best likened to the "dock". The dock is a fully customizable bar at the bottom of the OS X desktop (you can position the dock along any side of the screen that you'd like) and it contains application launch icons for applications to which you want quick and easy access, as well as icons of any running applications. If a running application already has its icon in the dock, a little arrow appears under the icon to denote that it's running; if not, the application's launch icon will appear to the right of the dock. The dock does have a divider to which you can also drag folders and links; to the right of this divider is where minimized windows go (with a very nice accompanying animation). Clicking on any application's icon in the dock will either launch the application if it's not already running or it will switch to that application; but, of course, that requires using that pesky mouse.



Finding my way around Finder (continued) Perfect Multi-tasking
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  • webchimp - Friday, October 8, 2004 - link

    When you compared multitasking performance on a Mac to a Windows PC, was the Windows PC also a dual processor machine?

    One of the major benefits of multiple processors is multitasking performance and it would be unfair to compare a single processor PC to a multi processor PC regardless of the particular CPU and OS.
  • insomn - Friday, October 8, 2004 - link

    "When writing an article (especially big NDA launches), I'd have around 20 IE windows open"

    IE?
    www.getfirefox.com
    20 IE windows = 1 firefox window.
  • CindyRodriguez - Friday, October 8, 2004 - link

    I'll try to only comment on the big stuff.
    Anand doesn't get the application install process at all. He's overthinking it way too much. Things don't have to be 'windows complicated' in OS X.

    In a drag and drop install, you aren't copying the "Application Installer" over to the hard drive. You're actually copying the Application its self over.

    Applications in OS X are actually bundles. They appear as binaries but they are actually directories with a hidden .app suffix on them. Select any OS X native App and control-click or rightclick on it. A contextual menu will pop up, select "Show Package Contents". This is the whole application.

    Contrary to what Mr. Shimpi said, there is no process were files are auto-magically copied to hidden and forbiden regions of your hard drive when you copy an application bundle from the installer disk to your hard drive. The application is entirely selfcontained so you are actually dragging everything over in one fell swoop. There is no disconnect because what you see in the install is what you get, a simple copy. OS X bundles are actually incredibly elegant ways to package applications.

    Some applications do require some additional files to be installed into the OS and this is where Anand was getting confused. Not all application installs in OS X are simple drag-drops. Many use more familiar installer shells. Some Drag and Drop installs also contain self repairing, Office is one example. Though the install is simply a copy, the application does require some files (like fonts for example) to be installed into the OS. This occurs when the application is first run, not when you copy the application over. On subsequent launches, if any of the required support files have been removed, they are reinstalled in much the same way. This is also a very nice feature.
  • Chuckles - Friday, October 8, 2004 - link

    With regard to your trouble opening folders and applications using the keyboard:
    Command-o opens whatever you have highlighted. I had never heard of Command-Shift-Down Arrow opening stuff before this.
  • CindyRodriguez - Friday, October 8, 2004 - link

    Argh.. I could only get through the first two pages before I was ready to pull my hair out.

    * The article is outdated even though it was published today. Apple rev'ed that machine in July.
    * G5s are expensive but so are similarly configured PCs. A dual opteron or dual Xeon from a real vendor with a real warranty will cost you just as much or more than the G5. I've actually spec'ed out dual G5s next to dual Xeons and dual Opterons and contrary to what Mr. Shimpi says.. do don't get "much more". Do it your self everyone.. but remember that a dual 2GHz isn't a $3K computer anymore.
    * Your overview of the Mac on page 2 is wrong. Apple didn't ship a Radeon 9600. The rev one shipped with a Radeon 9600Pro. That may seem like picking nits.. but I bet you'd consider is significant if I offered you a free 9600Pro or a free 9600 but not both.
    * Anand tells us in Page 2 to look at the specs to see how mediocre they are.. but he forgets to remind us that this computer is a Rev 1, not a rev 2.
    * Anand apparently didn't bother to look at Apple's new DVI monitors. He asserts that you loose the cable clutter cutting benefits of ADC but this isn't true. There is STILL only one cable to the DVI monitor. The cable breaks out to power/usb/dvi at the computer end.. in fact, Apple's new cable now includes firewire.
    * Once again, to pick nits.. the mouse cable on an apple mouse is short to plug into the keyboard not the monitor. Apple keyboards have always had pass through ports for the mouse.

    I'll try to trudge through the rest when I get time.. but it's pretty painful so far.
  • knutp - Friday, October 8, 2004 - link

    Sure there is a 2004 version of the Office pacage. Remember that this is a version only suited for Mac OS.

    http://store.apple.com/1-800-MY-APPLE/WebObjects/A...
  • KutterMax - Friday, October 8, 2004 - link

    One aspect not touched on in the review is some of the other applications included with the G5, that being iMovie, iPhoto, and iDVD.

    I'm a PC user but my wife has her own G5. She does a lot of work with digital photography and video and uses these apps a ton. They seem to work really well and integrate nicely together. $3000 is a lot to justify for a machine, but certainly these apps add some value. Further, an iMac G5, which would be about half the price, would also include these same apps and provides a little more value for the money (but only a single processor).
  • ksherman - Friday, October 8, 2004 - link

    the current version of the MS Office is 2003, not 2004... But a very god article indeed... Though i dont think ill be slapping down $3000 down for anything except a down payment on a car! :) I do agree that the slow downs that exist are crazy, given such an expensive computer. The fact that over 1GB memory is practically REQUIRED is a bit of an annoyance. But thats the price for a sexy OS!
  • sgd2z - Friday, October 8, 2004 - link

  • ThatGuyPSU - Friday, October 8, 2004 - link

    Thanks, Provia. I realized that after I hit Post Comment. Regardless, MS Office 2004 for the PC doesn't exist and probably won't since we're just about at the end of 2004. If anything, you'll see an MS Office 2005.

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