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Real World Benchmarks Of The EXT4 File-System

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  • phoronix
    started a topic Real World Benchmarks Of The EXT4 File-System

    Real World Benchmarks Of The EXT4 File-System

    Phoronix: Real World Benchmarks Of The EXT4 File-System

    With the EXT4 file-system being marked as stable in the forthcoming Linux 2.6.28 kernel, and some Linux distributions potentially switching to it as an interim step until the btrfs file-system is ready, we decided it was time to benchmark this journaled file-system for ourselves. We ran a number of disk-centric Linux benchmarks along with several of our real-world tests from the Phoronix Test Suite to gauge how well the EXT4 file-system performance will be noticed by desktop users and computer gamers. We have compared these EXT4 results to the EXT3, XFS, and ReiserFS file-systems.

    http://www.phoronix.com/vr.php?view=13199

  • fxfuji
    replied
    Does anyone know what the 'record size' parameter was set to for the IOzone tests? I'm running a mini-comparison of different file systems on an external HD... I'm running iozone directly and would liie to use the same parameters used by the PTS iozone tests.... Thank you!

    Leave a comment:


  • tytso
    replied
    Some added information about ext4

    Hi there, I just came across this discussion thread about Phoronix's "Real World Benchmarks of the EXT4 filesystem". In answer to the questions about e2fsck speeds, typical results on a filesystem which is created as a native ext4 filesystem is that it is 6-8 times faster at e2fsck speeds compared to ext3. See my blog posting at: http://thunk.org/tytso/blog/2008/08/...t4-fsck-times/

    Secondly, it should be noted that ext4 has barriers on by default (for safety's sake) while ext3 has barriers off by default (it's actually Andrew Morton who has resisted enabling barriers by default). So when ext4 beats ext3 that's despite the fact that ext3 has an "unfair" advantage over filesystems such as xfs and ext4 which enable barriers by default. You can mount ext3 with the mount option barriers=1 if you want to do a more apples-to-apples comparison.

    Finally there are some very good benchmarks available at http://btrfs.boxacle.net, done by a guy who works at IBM doing performance measurements. This site's primary mission is benchmarking in support of btrfs development, but there are also some very good benchmarks that compare ext3, ext4, jfs, xfs, and development versions of btrfs. For example please see:

    http://btrfs.boxacle.net/repository/...ngle_disk.html

    and

    http://btrfs.boxacle.net/repository/...are-RAID0.html

    Leave a comment:


  • rv65
    replied
    How does one install Fedora 10 with ext4.

    Leave a comment:


  • mahuyar
    replied
    Originally posted by alec View Post
    By the time "they " come up with anything, windows will not be relevant for me.
    In fact, word on street is that ext2 plugin will read ext4 just fine, unless it has extents enabled. But extents is the best thing about ext4, so migration is pointless in this case.
    Oh cool... Which program is it? I think there're 2 right?

    Leave a comment:


  • alec
    replied
    By the time "they " come up with anything, windows will not be relevant for me.
    In fact, word on street is that ext2 plugin will read ext4 just fine, unless it has extents enabled. But extents is the best thing about ext4, so migration is pointless in this case.

    Leave a comment:


  • mahuyar
    replied
    Originally posted by alec View Post
    If I use ext4 with extents, there is no way to read it from Windows, correct?

    I have a media partition in ext3, works out well (considering I have no need to write anything, just occasional read).
    I think it's too early for that. Give it some time, they'll come up with something... as usual ... The changes between ext3 and ext4 are drastic.

    Leave a comment:


  • alec
    replied
    If I use ext4 with extents, there is no way to read it from Windows, correct?

    I have a media partition in ext3, works out well (considering I have no need to write anything, just occasional read).

    Leave a comment:


  • energyman
    replied
    http://www.jejik.com/articles/2008/0...ftware_raid_1/

    see for yourself. Not even is jfs missing features. It is dead slow.

    Leave a comment:


  • deanjo
    replied
    Originally posted by thacrazze View Post
    Sorry but I don't need the useless "barriers" and I'm happy with the fastet FS ever

    JFS JFS JFS
    Fastest? That's like saying a slower video card is faster if you crank the details down compared to faster card running full eyecandy. If you disable barriers on XFS it stomps on JFS.

    Leave a comment:

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