Windows 8 and 8.1 Forums

Optimum page file size

  1. #1


    Posts : 153
    windows 8 pro x64

    Optimum page file size


    What would be an optimum size for pagefile.sys ? I have 8 gb of ddr2 ram and the pagefile.sys is around 4.5 gb . I guess this is not necessary size. Would it be good to fix it around 1 or 2 gb ? Thanks in advance.

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  2. #2


    Posts : 80
    Windows 8 Pro


    Leave it alone. Windows knows what it is doing.
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  3. #3



    Redmond
    Posts : 626
    Windows 8.1 x64


    This does get asked frequently, and the pat answer is usually "leave it alone" with 8GB of RAM or less. Once you start getting up into the 12GB+ of RAM, then we can start thinking about tweaking paging file size, Hibernation file, etc. Unless you're on a very small SSD, you really want to leave it alone with 8GB or less of RAM, as bad things can happen if you disable the paging file and then run out of available memory.
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  4. #4


    As others have said, leave it alone unless you have an SSD drive and you want to prevent too much space from being consumed.
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  5. #5


    Well, i have 4 gb ram, and ssd, so i just completely disabled page file, everything is great.
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  6. #6


    With 8GB of ram why are you running a page file to begin with? There is absolutely no need. On Every system I've build with 8gb or more of ram I disable the page file, not a single problem and the speed increase is noticeable. If you are dead set on a page file, set it to min and max 1.5x your ram installed, preferably on a drive other then C:
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  7. #7



    Redmond
    Posts : 626
    Windows 8.1 x64


    Probably because the paging file's existence allows the modified page writer to work instead of just piling up memory pages on the modified writer list. Also, it allows more memory commit to be used (commit != actual RAM usage), makes sure you have additional "memory" in a pinch, and (by default) is used if you crash and need a memory dump. If you choose to run without one, that's your choice, but be aware it's not a "free" choice by any means. You ARE messing with how the memory manager works, at the very least.
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  8. #8


    Quote Originally Posted by cluberti View Post
    Probably because the paging file's existence allows the modified page writer to work instead of just piling up memory pages on the modified writer list. Also, it allows more memory commit to be used (commit != actual RAM usage), makes sure you have additional "memory" in a pinch, and (by default) is used if you crash and need a memory dump. If you choose to run without one, that's your choice, but be aware it's not a "free" choice by any means. You ARE messing with how the memory manager works, at the very least.

    Yes....I read the MS white paper on page file usage too, but as I've said, in all the machines I've built with 8GB or more of ram for myself and others, I've disabled the page file without a single issue. I've built machines for devs, programmers, media heads, gamers, etc....never an issue...The only time I recommend running a page file is when dealing with less then 4GB of ram or running any type of server OS, and even then I recommend a static page file. There has always been a noticeable performance increase in my experience...your results may vary.
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  9. #9



    Redmond
    Posts : 626
    Windows 8.1 x64


    Not everyone needs a paging file, but not everyone *doesn't* need one either. If you don't understand specifically what it's doing to a system and what it might do under certain workloads, it doesn't pay to do it. Also, the speed improvement would only happen if you were using the paging file in the first place, which means your change would have caused instability and crashing - so I don't necessarily doubt that it works for you, but I would doubt the performance increase (the memory manager isn't going to put active pages in the paging file unless there's heavy memory pressure already).
      My System SpecsSystem Spec

  10. #10


    Posts : 153
    windows 8 pro x64


    Pagefile was around 4.5 gb at first and now it's set to around 1.2 gb . Windows 8 is very good at memory management.
      My System SpecsSystem Spec

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Optimum page file size

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