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Thread: Reiser4 - The most amazing FS ever!

  1. #11
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    Re: Reiser4 - The most amazing FS ever!

    Unfortunately, use the filesystem for a few weeks then try this again.

    The performance of reiser4 in my experience rapidly degrades over time, which is what the reiser4 repacker was supposed to resolve but that never seemed to get written.
    Quote Originally Posted by tuxradar
    Linux's audio architecture is more like the layers of the Earth's crust than the network model, with lower levels occasionally erupting on to the surface, causing confusion and distress, and upper layers moving to displace the underlying technology that was originally hidden

  2. #12
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    Re: Reiser4 - The most amazing FS ever!

    Quote Originally Posted by jdong View Post
    The performance of reiser4 in my experience rapidly degrades over time, which is what the reiser4 repacker was supposed to resolve but that never seemed to get written.
    ^^this

    And reiser4 is as good as a dead horse.
    You came empty handed, that is how you shall leave. Whatever you claim as yours today, belonged to someone else yesterday, will be someone else's tomorrow.

  3. #13
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    Re: Reiser4 - The most amazing FS ever!

    Btrfs is the future.

  4. #14
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    Re: Reiser4 - The most amazing FS ever!

    Quote Originally Posted by medic2000 View Post
    Stay on the topic. This is about Reiser4 performance not the facebook.
    I think that the performance is from its Copy on Write functionality, which means that large sections of the file were not being written at all when you did that in-disk copy.

    Copy on Write is used in virtual memory, but doing it on a hard drive brings about issues with fragmentation, which is what jdong mentions in his post.

    In that sense, Reiser4 has a great deal in common with NTFS, except Reiser4 derives its fragmentation from copy on write while NTFS derives its fragmentation from laying out files on the disk with no room for files to expand.

  5. #15
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    Re: Reiser4 - The most amazing FS ever!

    XFS has been benchmarked almost as fast as reiser4 on small files and faster on large files 300MB+, it has defrag capability and superior journaling.

    That is why I endorse XFS as the next Pres...ubuntu filesystem!
    if you need a fast live cd for testing or anything really:
    http://ubuntuforums.org/showthread.p...70#post9715370
    boots live in just 82MB of ram, no swap!

  6. #16
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    Re: Reiser4 - The most amazing FS ever!

    Quote Originally Posted by Sporkman View Post
    Btrfs is the future.
    They got a lot of work to do on BTRFS, it's slower than well.... it's the slowest file-system I've used.
    Lenovo 330 - Win 10 64-bit - Ryzen 5 2500U 8GB 120GB SSD
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  7. #17
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    Re: Reiser4 - The most amazing FS ever!

    btrfs can't be fscked, and therefore, shouldn't be used in anything but a test environment, even if the slow and unpolished code base wasn't a deterrent.

  8. #18
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    Re: Reiser4 - The most amazing FS ever!

    Quote Originally Posted by Shining Arcanine View Post
    I think that the performance is from its Copy on Write functionality, which means that large sections of the file were not being written at all when you did that in-disk copy.

    Copy on Write is used in virtual memory, but doing it on a hard drive brings about issues with fragmentation, which is what jdong mentions in his post.

    In that sense, Reiser4 has a great deal in common with NTFS, except Reiser4 derives its fragmentation from copy on write while NTFS derives its fragmentation from laying out files on the disk with no room for files to expand.

    Are you sure that you aren't thinking of btrfs? Although Reiser4 uses modified B-Trees (Dancing B-Trees, as Hans called it in his whitepaper), it does not employ copy-on-write techniques, unlike btrfs and ZFS.


    The fundamental problem is that BTrees over time, as they are being modified, will lose their spatial/sequential coherency and probably should be reconstructed. Hans noted that there was a way, in the reiser4 tree design, that a sequence of online tree modification operations can be used to achieve the same effect as destroying and rebuilding all the trees, and this was the technique in the online repacker that he proposed.
    Quote Originally Posted by tuxradar
    Linux's audio architecture is more like the layers of the Earth's crust than the network model, with lower levels occasionally erupting on to the surface, causing confusion and distress, and upper layers moving to displace the underlying technology that was originally hidden

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