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    SubjectRe: [PATCH 00/23] per device dirty throttling -v8

    * Andrew Morton <akpm@linux-foundation.org> wrote:

    > > yeah, it's really ugly. But otherwise i've got no real complaint
    > > about ext3 - with the obligatory qualification that
    > > "noatime,nodiratime" in /etc/fstab is a must. This speeds up things
    > > very visibly - especially when lots of files are accessed. It's kind
    > > of weird that every Linux desktop and server is hurt by a noticeable
    > > IO performance slowdown due to the constant atime updates,
    >
    > Not just more IO: it will cause great gobs of blockdev pagecache to
    > remain in memory, too.

    i tried to convince distro folks about it ... but there's fear,
    uncertainty and doubt about touching /etc/fstab and i suspect no major
    distro will do it until another does it - which is a catch-22 :-/ So i
    guess we should add a kernel config option that allows the kernel rpm
    maker to just disable atime by default. (re-enableable via boot-line and
    fstab entry too) [That new kernel config option would be disabled by
    default.] That makes it much easier to control and introduce.

    Ingo
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