Returnil and disc fragmentation.

Discussion in 'sandboxing & virtualization' started by Ocky, May 3, 2008.

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  1. Ocky

    Ocky Registered Member

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    Is it normal to see higher than usual overall disc fragmentation
    after a defrag (I use Contig) when the Disc Cache
    method is used ? The Returnil disc cache folder seems to be
    the cause. (11% fragmentation after defrag - before was 0%)
     
  2. Matern

    Matern Registered Member

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    I have after each start the same fragmentation as before.
    After a Progamm Install I make a short Defrag with Defraggler, and then you have after each start a defragt System.
    The Returnil Cache is like your memory or swapfile, the fragmentation is normal.
     
  3. Ocky

    Ocky Registered Member

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    Yes, I have noticed that the fragmentation even after a defrag is
    always practically the same, ( about 11% ), since having installed
    Returnil. It's just that I am not used to seeing fragmentation as
    I also use page defrag for the paging file.
    It doesn't bother me and Returnil is rock-solid on my machine.
    Something I will pay for when my GAOTD premium version expires.
    It seems the Disc Cache folder will always show up as fragmented,
    even after defragging.
     
  4. Coldmoon

    Coldmoon Returnil Moderator

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    Hi Ocky,
    One suggestion here if you are using the disk cache. Change over to memory cache using the repair option in the uninstaller and then perform a defrag without RVS protection on. Then after the defrag, restore the disk cache using the same uninstaller option.

    Let me know if this gives better results as far as the fragmentation report is concerned. One thing to also keep in mind here. RVS does not require contiguous space to create the disk cache as others do. This could lead the defragger to report fragmentation that does not really exist.

    Mike
     
  5. Ocky

    Ocky Registered Member

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    Have tried that now just for interest sake - of course lost all my exclusions
    in the file manager*, so not an option. Anyway, here the results. Defrag was
    not done in safe mode and RVS protection off.

    With memory cache enabled (after defrag):-

    Volume fragmentation
    Total fragmentation = 0 %
    File fragmentation = 0 %
    Free space fragmentation = 0 %

    File fragmentation
    Total files = 38,922
    Average file size = 284 KB
    Total fragmented files = 1
    Total excess fragments = 14
    Average fragments per file = 1.00

    With Disc Cache restored:-

    Volume fragmentation
    Total fragmentation = 6 %
    File fragmentation = 12 %
    Free space fragmentation = 0 %

    File fragmentation
    Total files = 38,928
    Average file size = 323 KB
    Total fragmented files = 9
    Total excess fragments = 23
    Average fragments per file = 1.00

    I think what you say in the second paragraph of your post is correct. :)

    *PS. I forgot to export the list in File Manager - silly of me !
     
    Last edited: May 4, 2008
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