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    SubjectRe: Poor interactive performance with I/O loads with fsync()ing
    On Sun, 11 Apr 2010, Avi Kivity wrote:

    > On 04/09/2010 05:56 PM, Ben Gamari wrote:
    > > On Mon, 29 Mar 2010 00:08:58 +0200, Andi Kleen<andi@firstfloor.org> wrote:
    > >
    > > > Ben Gamari<bgamari.foss@gmail.com> writes:
    > > > ext4/XFS/JFS/btrfs should be better in this regard
    > > >
    > > >
    > > I am using btrfs, so yes, I was expecting things to be better.
    > > Unfortunately,
    > > the improvement seems to be non-existent under high IO/fsync load.
    > >
    > >
    >
    > btrfs is known to perform poorly under fsync.

    XFS does not do much better. Just moved my VM images back to ext for
    that reason.

    Thanks,

    tglx


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