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    Hating stuff

    There are valid reasons for hating Unity, Mir, X.org, wayland, Canonical, microsoft, Nokia, Google, Apple, Valve, Oracle, Red Hat, etc.

    Everybody loves to back the small guy.

    There are also...
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    Judging based on performance test results

    ZFS is built for enterprise type "demands", not only for enterprise environments. The problem is that articles such as the ones published here on phoronix tend to judge ZFS based on performance...
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    Ext4-LVM stack Tuning

    I suspect that Ext4 could perform much better with even just basic tuning.

    In particular the fact that Ext4 on a ZVol outperforms Ext4 on LVM+mdadm is probably because ZFS is auto-tuning every...
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    For me the biggest surprise here is that the...

    For me the biggest surprise here is that the 5-disk RaidZ outperforms the 10-disk RaidZ2.

    Now I am going to have to test a pool with 2 x 5-disk RaidZ VDevs
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    More 9 and 10 disk combinations added

    http://openbenchmarking.org/result/1304291-FO-MERGE284129,1304257-FO-MERGE786390,1304271-FO-MERGE184123&obr_sor=y
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    Re-doing the tests

    I have been re-running some of the tests. After the kernel updates, some of the tests give better results (in particular the "4000 Files, 32 Sub Dirs" is more affected than the other tests)

    The...
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    Software component versions

    Some relevant package/version bits:

    e2fsprogs-libs-1.41.12-14.el6.x86_64
    e2fsprogs-1.41.12-14.el6.x86_64
    lvm2-libs-2.02.98-9.el6.x86_64
    lvm2-2.02.98-9.el6.x86_64
    mdadm-3.2.5-4.el6.x86_64
    ...
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    Shnatsel, ZFS provides all the file system and...

    Shnatsel,

    ZFS provides all the file system and volume/space/redundancy/management features that you get from mdadm+LVM+Ext4 and more. Much more, in fact, but let me not get distracted - it is...
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    RaidZ2 test added to results

    Now including ZFS RaidZ2 over 10 disks

    http://openbenchmarking.org/result/1304266-FO-MERGE580440&obr_sor=y
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    Some notes/observations on the results

    1. When mounting ZFS with sync=disabled I actually get worse performance.

    2. I did not get better results when mounting ZFS with checksum=off .... The results were the same to within the amrgin of...
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    New Kernel

    I just patched again and got a few updates, including a new kernel.

    # uname -a
    Linux emc-grid 2.6.32-358.6.1.el6.x86_64 #1 SMP Fri Mar 29 16:51:51 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux
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    Disk configuration

    I decided that separate ZIL / ARC etc caches would be an unfair advantage for ZFS. I wanted to compare as close as possible like-for-like functionality wise.

    So for EXT4 I used Ext4 on LVM on...
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    Software versions

    This server is running RHEL 6.4 with current patches as well as ZFS-on-Linux 0.6.1 using the ZFS-on-Linux team's repository.

    RHEL is in fact quite conservative about Kernel versions, but I do NOT...
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    ZFS vs EXT4 - ZFS wins

    I have said this numerous times and now I am able to back my claims with results

    http://openbenchmarking.org/result/1304257-FO-MERGE786390

    When given multiple dedicated disks, ZFS is...
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    A thank you

    Please accept my thank you, despite my criticism, for the hard work and effort you put into covering a wide range of topics, reviews, benchmarks and news tid-bits.
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    Too good to be true

    Michael, after my last complaints about how you test ZFS you did not change one single thing!?

    ZFS perform middle of the road in these tests, and I agree that with ZFS not being part of the main...
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    A more liberal License?

    It is not the CDDL that restricts license type mixing, it is the GPL (as evidenced by the fact that a: everything in the linux kernel must be GPL, and b: ZFS under CDDL is already included with the...
  18. Yet another irrelevant comparisson

    ZFS is made for systems with lots of disks, ideally spread over many controllers.

    It is like saying Puppy Linux is faster (which most people read as better) than Ubuntu after testing it on a...
  19. What is wrong with benchmarks

    A lot is wrong with this kind of article, if not merely with the way the testing is done. I posted in some considerable depth about this in December.

    One of my main gripes is that even though...
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