iOS Swap File - Page File - VM or Whatever You Want to Call It

Discussion in 'iPad' started by MrWillie, Jan 15, 2011.

  1. MrWillie macrumors 65816

    MrWillie

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    #1
    Someone posted a link in another thread.

    http://android-developers.blogspot.com/2010/04/multitasking-android-way.html

    The lady that wrote the article stated that none of the mobile OS's use a swap file.

    Why not ? I have 19 gigs of flash memory free. Could iOS allow a swap file?

    What is the gripe with iOS multitasking? If I stop playing ABs, it picks up where I left off, without going through the startup screen. If I use the Mediafly app, podcast continue playing in the background. Would you really want AB to continue playing while you were doing something else?
     
  2. Intell macrumors P6

    Intell

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    #2
    Why? Because the NAND flash is not designed to be used as swap. It is damaging to the overall health of the chips.
     
  3. old-wiz macrumors G3

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    #3
    Exactly. The reason is not software it is hardware - while the software could perfectly well do it, it would shorten the life of the flash memory. Swap files are accessed OFTEN.
     
  4. Piggie macrumors 604

    Piggie

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    #4
    This could be another reason why a jump to 1GB would be a wise move.

    Both the Blackberry Playbook and Motorola Xoom will have 1GB of Ram to compete against the iPad2.

    Whilst I know tech specs are not everything, it will look a bit poor of Apple to fit half the Ram of it's competitors. Perhaps with 1GB it would allow not only larger programs to run, but also run better as they can use the extra space as cache area to speed things up.

    For App developers it would be better also to jump direct to 1GB which would probably be enough to use in the iPad3 also, then to jump from 256 to 512 and then to 1GB a year later.

    Given the, I guess, minimal cost difference, I hope Apple just go with 1GB in one step and not mess about.
     
  5. MrWillie thread starter macrumors 65816

    MrWillie

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    #5
  6. Night Spring macrumors G5

    Night Spring

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    #6
    Minimal? Are we sure about that? Anyone know the exact cost difference between a 1GB and a 512mb RAM?

    Also, do we have a price for the Xoom or Playbook yet?
     
  7. Piggie macrumors 604

    Piggie

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    #7
    When you are ordering 10 or 20 million I reckon they can strike a reasonable deal on the price. :)

    At the moment I don't think we do. Right now, the Xoom would easily command a higher price as it's higher in about every spec there is.

    larger screen
    higher resolution screen
    4x the amount of RAM
    more powerful graphics
    Twin cameras and flash unit on the rear 5 megapixel camera.
    Micro SD slot for user memory expansion
    hdmi

    etc etc.


    How this all compares with iPad2 and pricing we will have to see.
    I don't expect the Xoom will be cheap.
     
  8. Night Spring macrumors G5

    Night Spring

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    #8
    But they are ordering 10~20 million of the thing anyway, so, 10~20 million of the lower spec RAM has got to be cheaper than 10~20 million of the higher spec RAM, no matter how you slice it.

    Operative word being "right now." Right now, Xoom isn't available for sale yet. It seems quite possible that Xoom and iPad2 will both hit the market at around the same time. The iPad2 will almost certainly be sold at the same price point as the current iPad, with whatever improved specs Apple decides to pack in. Will the Xoom's specs hold a significant enough advantage over iPad2 to justify a significant price differential?

    Actually, now I'm thinking about it, if I were Motorola, I'd wait until the iPad2 is announced and its specs are revealed before deciding on a price for the Xoom.
     
  9. Piggie macrumors 604

    Piggie

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    #9
    I agree with you fully about this and if I were Motorolla I'd do the same.

    If the iPad2 is lower specced than the Xoom then Motorola can easily charge more and people would accept it I feel.

    Until the iPad2 is launched, they, and we don't know the spec or the price. However I'm sure Motorola already have a price they are aiming for, and, just looking at the spec I'd put it at least $100 or $200 above the iPad with the same memory.
     
  10. MrWillie, Jan 15, 2011
    Last edited: Jan 15, 2011

    MrWillie thread starter macrumors 65816

    MrWillie

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  11. kdarling macrumors demi-god

    kdarling

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    #11
    It has. But AFAIK Apple still buys NAND Flash with only a 5,000 - 10,000 write cycle limit. It's less expensive and it makes sense for seldomly changed media and app storage.

    Apple also has little control over how much of the Flash you fill with files, meaning you could be left with just 1 GB of swap, which could get killed pretty quickly.

    This is also partly why they use RAM for web page cache instead of the Flash (besides speed).
     

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