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Thread: PERFORMANCE OF FILESYSTEMS COMPARED (includes Reiser4 and Ext4).

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    Default PERFORMANCE OF FILESYSTEMS COMPARED (includes REISER4 and EXT4).

    PERFORMANCE OF FILESYSTEMS COMPARED
    (includes Reiser4 and Ext4)


    http://linuxhelp.150m.com/resources/fs-benchmarks.htm
    http://linux.50webs.org/resources/fs-benchmarks.htm

    RESULT: With compression, REISER4, absolutely SMASHED the other filesystems.

    No other filesystem came close (not even remotely close).

    Using REISER4 (gzip), rather than EXT2/3/4, saves you a truly amazing 816 - 213 = 603 MB (a 74% saving in disk space), and this, with little, or no, loss of performance when storing 655 MB of raw data. In fact, substantial performance increases were achieved in the bonnie++ benchmarks.

    We use the following filesystems:

    REISER4 gzip: Reiser4 using transparent gzip compression.
    REISER4 lzo: Reiser4 using transparent lzo compression.
    REISER4 Standard Reiser4 (with extents)
    EXT4 default Standard ext4.
    EXT4 extents ext4 with extents.
    NTFS3g Szabolcs Szakacsits' NTFS user-space driver.
    NTFS NTFS with Windows XP driver.

    Disk Usage in megabytes. Time in seconds. SMALLER is better.

    Code:
    .-------------------------------------------------.
    |File         |Disk |Copy |Copy |Tar  |Unzip| Del |
    |System       |Usage|655MB|655MB|Gzip |UnTar| 2.5 |
    |Type         | (MB)| (1) | (2) |655MB|655MB| Gig |
    .-------------------------------------------------.
    |REISER4 gzip | 213 | 148 |  68 |  83 |  48 |  70 |
    |REISER4 lzo  | 278 | 138 |  56 |  80 |  34 |  84 |
    |REISER4 tails| 673 | 148 |  63 |  78 |  33 |  65 |
    |REISER4      | 692 | 148 |  55 |  67 |  25 |  56 |
    |NTFS3g       | 772 |1333 |1426 | 585 | 767 | 194 |
    |NTFS         | 779 | 781 | 173 |   X |   X |   X |
    |REISER3      | 793 | 184 |  98 |  85 |  63 |  22 |
    |XFS          | 799 | 220 | 173 | 119 |  90 | 106 |
    |JFS          | 806 | 228 | 202 |  95 |  97 | 127 |
    |EXT4 extents | 806 | 162 |  55 |  69 |  36 |  32 |
    |EXT4 default | 816 | 174 |  70 |  74 |  42 |  50 |
    |EXT3         | 816 | 182 |  74 |  73 |  43 |  51 |
    |EXT2         | 816 | 201 |  82 |  73 |  39 |  67 |
    |FAT32        | 988 | 253 | 158 | 118 |  81 |  95 |
    .-------------------------------------------------.
    WHAT THE NUMBERS MEAN:

    The raw data (without filesystem meta-data, block alignment wastage, etc) was 655MB.
    It comprised 3 different copies of the Linux kernel sources.

    Disk Usage: The amount of disk used to store the data.
    Copy 655MB (1): Time taken to copy the data over a partition boundary.
    Copy 655MB (2): Time taken to copy the data within a partition.
    Tar Gzip 655MB: Time taken to Tar and Gzip the data.
    Unzip UnTar 655MB: Time taken to UnGzip and UnTar the data.
    Del 2.5 Gig: Time taken to Delete everything just written (about 2.5 Gig).

    Each test was preformed 5 times and the average value recorded.

    To get a feel for the performance increases that can be achieved by using compression, we look at the total time (in seconds) to run the test:

    bonnie++ -n128:128k:0 (bonnie++ is Version 1.93c)

    Code:
    .-------------------.
    | FILESYSTEM | TIME |
    .-------------------.
    |REISER4 lzo |  1938|
    |REISER4 gzip|  2295|
    |REISER4     |  3462|
    |EXT4        |  4408|
    |EXT2        |  4092|
    |JFS         |  4225|
    |EXT3        |  4421|
    |XFS         |  4625|
    |REISER3     |  6178|
    |FAT32       | 12342|
    |NTFS-3g     |>10414|
    .-------------------.
    The top two results use Reiser4 with compression. Since bonnie++ writes test files which are almost all zeros, compression speeds things up dramatically. That this is not the case in real world examples can be seen in the first test above where compression often does not speed things up. However, more importantly, it does not slow things down much, either.

    http://linuxhelp.150m.com/resources/fs-benchmarks.htm
    http://m.domaindlx.com/LinuxHelp/res...benchmarks.htm
    Last edited by Jade; 03-20-2008 at 09:11 AM.

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