Superfetch... how exactly does it work

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  1. Posts : 3,427
    Windows 10 Pro x64
       #1

    Superfetch... how exactly does it work


    Just a little knowledge building here, i understand that superfetch loads applications most used into the memory for easier access, but i read an article explaining it, and it seemed to contradict itself, it said that it optiises boot times, but doesnt start fetching until the CPU is idling after boot, can someone please explain to me how both are possible?
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  2. Posts : 1,470
    Windows 7 Ultimate Signature Edition
       #2
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  3. Posts : 177
    Windows 7 Pro X64
       #3

    In other words, is it essential to use it and can it be turned off, it can save a fair bit of CPU power apparently.

    Thanks
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  4. Posts : 1,470
    Windows 7 Ultimate Signature Edition
       #4

    for best performance it is recommended to leave it running. however many people turn it off and nothing bad happens.
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  5. Posts : 177
    Windows 7 Pro X64
       #5

    dannyboy2005 said:
    In other words, is it essential to use it and can it be turned off, it can save a fair bit of CPU power apparently.

    Thanks
    My bad, after some forum reading and some conclusions, it is pretty much essential to keep it turned on if you want to keep your O/S running smooth and fast!

    I'll leave my turned on!
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  6. Posts : 3,427
    Windows 10 Pro x64
    Thread Starter
       #6

    interesting valton, but doesnt answer my question, if it doesnt start fetching until the cpu reaches idle, how does it optimise boot? or is it simply in the way that it arranges the boot files on the HDD?
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  7. Posts : 1,470
    Windows 7 Ultimate Signature Edition
       #7

    well idk i didn't read the white paper article on it, i just pointed you in the right direction. but if it doesn't start up until the cpu comes to idle then i'd say it doesn't help boot times out much. but according to the above poster disabling it can cause system instability so thats something to think about before messing with it. personally i don't see a reason to turn it off myself and like i've said many times on these forums if it ain't broke don't fix it.
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  8. Posts : 3,427
    Windows 10 Pro x64
    Thread Starter
       #8

    oh i have no intention of switching it off, i was just curious about the boot thing, never mind, ill keep on wondering, thanks for the article though, interesting read
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  9. Posts : 1,470
    Windows 7 Ultimate Signature Edition
       #9

    sorry i couldn't be more helpful, i've just never worried enough to check into it.
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  10. whs
    Posts : 26,210
    Vista, Windows7, Mint Mate, Zorin, Windows 8
       #10

    dannyboy2005 said:
    In other words, is it essential to use it and can it be turned off, it can save a fair bit of CPU power apparently.

    Thanks
    You do that if your OS runs off an SSD. But for a HDD it is improving performance. Turning it off is counterproductive.
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