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What is the point of using an inverted page table?

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  • What is the point of using an inverted page table?

    I am looking at different ways in which a page table could be organized, one of which ways is using an inverted page table. From what I can understand ... there is a row for every frame in the disk, so we essentially have a page table which looks exactly like the structure of the actual disk, which defeats the purpose of having a page table to begin with
    .

  • #2
    Hi,

    I am not sure how page tables relate to the planted tank hobby....

    I think you are on the wrong forum...
    Thanks,

    Gerry.

    'When something's not right, it's wrong'. Bob Dylan

    Current 220 scape

    http://www.barrreport.com/showthread...3219-220-video

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    • #3
      Provided of Course The KH, GH pH Balance is Maintained

      Hi,

      Many of my plants have found that inverted page tables can be reasonably efficient.:gw
      • Fewer accesses are needed if you can have a successful search in only a couple of probes (on average)
      • when doing a lookup in a page table that is more than a couple of levels deep.
      As address spaces get bigger, page tables get more unwieldy. A 64-bit address might imply something like 5 levels of table (10 bit index for all but last) many plants and a few critters have a hard time keeping track.

      As virtual address spaces grow so much bigger than physical addresses, it becomes possible that space and time can be saved by inverting the page table -- mapping physical to virtual, instead of the other way around.

      I have found that Vals and Sags benefit most and E. tenellus is just a total pig about it either way.

      Biollante
      The first sign we don't know what we are doing is an obsession with numbers. - Johann Wolfgang von Goethe

      Disclaimer: I am not trying to make you mad, it is just what I am, an evil plant monster, 'nuf said.
      • I believe the information I am giving is sound, I am not a veterinarian, professional chemist or particularly bright and certainly not a "Guru.".
      • I assume you are of legal age, competent and it is legal for you to acquire, possess and use any materials or perform any action in your in your jurisdiction.
      • When in doubt "don't."

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      • #4
        Ipt

        Around here IPT stands for "irresistible Planted Tank"

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