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    SubjectRe: Poor interactive performance with I/O loads with fsync()ing
    On Tue, 16 Mar 2010 21:31:03 -0700 (PDT), Ben Gamari <bgamari.foss@gmail.com> wrote:
    > On Tue, 16 Mar 2010 23:30:10 -0400, tytso@mit.edu wrote:
    > > .... so did switching to Btrfs solve your latency issues, or are you
    > > still having problems?
    >
    > Still having troubles although I'm now running 2.6.34-rc1 and things seem
    > mildly better. I'll try doing a backup tonight and report back.
    >
    I stand by my assertion that 2.6.34 does seem better in some regards. While
    there certainly are still latency issues, it's now less often that heavy I/O
    spills over into over processes' interactive performance. That being said,
    earlier this evening Tracker and notmuch were both indexing and I saw several
    events of tens of seconds of latency.

    - Ben


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