Windows 8 and 8.1 Forums


high ram usage during file transfer

  1. #11


    Posts : 2,130
    Windows 8.0 x64


    Quote Originally Posted by m18xr2 View Post
    thanks for the help. btw, teracopy doesnt have multi thread copy like richcopy does it? I dont see the options but doesnt mean it wont have it, or does it not have it?
    I would find out from the author or docs. I only use one of these copy utilities for general copy sporadically when I get a Windows with slow Explorer copy... as examples, Vista and W8 before the SP. I don't follow the blogs. There should be comparisons of killcopy, teracopy and others if you search the web. The old v. 1.2 let you size the buffers via .ini file. But I have no idea if that option is ignored on the current version.

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  2. #12


    Posts : 328
    Windows 8.1 (x64)


    Quote Originally Posted by m18xr2 View Post
    in window 7 it uses maximum 2gb of ram when transfering big file, say an example a movie size of 8gb. now in windows 8 it seems it uses 6-8GB its as if file is transfered into ram first and then slowly copy into targeted disk. just what is going on here and why microsoft decided to do this?
    Erm... By "transfering" I assume you mean copying a file. Any copy operation involves RAM in whatever OS ever created. It goes like this : Read data from disk to ram then write data from ram to disk. The more ram used during this process the faster the operation. Why ? Because any access to the disk is much slower than access to RAM. If you copy by small chunks you'll access the disk more often, and it will be slower. Moreover if copying on the same hard drive and your files aren't fragmented, then the more memory you use the less the heads have to move, also leading to a faster copy.

    if power goes out then all the files is gone and the entire process is actually slower imho.
    If you only copy, then I'm not sure how the power going out matters since windows doesn't natively support resuming an interrupted copy operation. If talking about moving, then it doesn't matter either because windows deletes the original file only once the copy process is done...

    is there anyway to disable this? or revert it back to similar what 7 had?
    I believe you can use CacheSet, or System Downloads : CacheBooster /// AnalogX to set the cache used during windows copy.
    Last edited by oneeyed; 19 Dec 2013 at 22:39.
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  3. #13


    That's what I was wandering about, why would using larger amount of memory slow down transfer of data between disks. That was the main idea for DMA and large disk cache, to speed up that. Try using PIO mode instead of DMA and you'll see what slow means. The only problem I could see is if you are transferring large amount of data while running some memory intensive program and you are short on memory anyway.
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  4. #14


    Posts : 2,130
    Windows 8.0 x64


    Quote Originally Posted by CountMike View Post
    That's what I was wandering about, why would using larger amount of memory slow down transfer of data between disks. That was the main idea for DMA and large disk cache, to speed up that. Try using PIO mode instead of DMA and you'll see what slow means. The only problem I could see is if you are transferring large amount of data while running some memory intensive program and you are short on memory anyway.
    That's the idea of using a configurable copy. So you can copy in the background without sucking up all the resources. I think killcopy has more control than TeraCopy. But I haven't investigated the options in some time.
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  5. #15


    I just use "Total Commander", if it starts taking long time just push Backround button.
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  6. #16


    Posts : 2,130
    Windows 8.0 x64


    Quote Originally Posted by CountMike View Post
    I just use "Total Commander", if it starts taking long time just push Backround button.
    That may be a solution if you can convince the person with the issue to adopt the file manager you favor. I like FreeCommander. But it has the same disadvantage they all do. They're not already in ram where Explorer is. Once SSDs are universal that will change or be a moot point at least.
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  7. #17


    Posts : 52
    windows 8.1 and server 2012 R2


    Quote Originally Posted by oneeyed View Post
    Erm... By "transfering" I assume you mean copying a file. Any copy operation involves RAM in whatever OS ever created. It goes like this : Read data from disk to ram then write data from ram to disk. The more ram used during this process the faster the operation. Why ? Because any access to the disk is much slower than access to RAM. If you copy by small chunks you'll access the disk more often, and it will be slower. Moreover if copying on the same hard drive and your files aren't fragmented, then the more memory you use the less the heads have to move, also leading to a faster copy.

    If you only copy, then I'm not sure how the power going out matters since windows doesn't natively support resuming an interrupted copy operation. If talking about moving, then it doesn't matter either because windows deletes the original file only once the copy process is done...

    I believe you can use CacheSet, or System Downloads : CacheBooster /// AnalogX to set the cache used during windows copy.
    sorry for the late response everyone. thanks for sharing solutions. I am aware of cacheset and cachebooster and now I am getting around to try those, as well as killercopy. I have already tried teracopy and it's very good.

    @oneeyed, I just realized my issue is common in server workstation simply because I am running server 2012, although it is similar to windows 8 it is different in many ways and this is one big issue as it is intended for server with over 1TB of ram, and fast raided storage backup. windows 7 and possibly 8 as well have 2gb of cache (windows settings) where as server 2008 and 2012 is set to 1TB somehow. the power outage I mentioned was the file getting written to targeted drive would be corrupted etc.. I liked your explanation on last portion where copying a bunch of tiny files, creating less head movement thus it is faster to have it cached, however does this apply to SSDs? as almost all of my storage devices in my laptop are SSDs, 4TB of SSD space and 2TB of HDD space for backup.
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  8. #18


    SSDs work different inside but as far as OS is concerned it's all the same. With SSDs you have to ensure that Trim is working and Garbage Collection is doing it's job otherwise they have to do cleaning bits from cells marked empty on the fly and so slow down considerably. This is even more pronounced if they are in RAID, Trim has problems with some of RAID configurations.
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  9. #19


    Posts : 52
    windows 8.1 and server 2012 R2


    so i went and try the cacheset, not working with server operating system it seems as it still use up all of my ram during file transfer. im currently defeated =( with no tricks left except to stick to teracopy (which is great), can't find killercopy anywhere though. again thanks for all the help
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  10. #20


    Posts : 2,130
    Windows 8.0 x64
      My System SpecsSystem Spec

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high ram usage during file transfer
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