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    SubjectRe: XFS and journalling filesystems


    Journalling slows everything down because it requires all writes (and reads)
    to be serialized. This decreases SMP parallelism. The last thing Linux
    needs is another slow SMP poor component. I think more is better, don't get
    me wrong. I jsut didn't like seeing some folks go belly up and start
    killing their internal projects (like ext3) just becuase XFS shows up on the
    scene. Particularly since it was a patently blatant predatory move by SGI
    based on pure politics -- so obvious. It's also just another unix file
    system, and comes with all the limitations of Unix FS's.


    ----- Original Message -----
    From: Andreas Bogk <>
    To: Jeff Merkey <>
    Cc: <>; <>
    Sent: Monday, May 24, 1999 8:57 AM
    Subject: Re: XFS and journalling filesystems

    > "Jeff Merkey" <> writes:
    > > much of it they are really going to give you. Another Unix File system
    > > (yawn yawn yawn) with journalling (which means it will be **SLOW**). I
    > > would vote for the ext3 project to continue. It appears they were
    > I'm using Linux for video applications. XFS has a very important
    > feature for video: guaranteed bandwidth. Also, journalling slows down
    > reading, but speeds up writing, which is again important for
    > video. So, as long as ext3 is not there, I'll be very happy about XFS.
    > Andreas
    > --
    > Reality is two's complement. See:

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