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    SubjectRe: Big files in ext2fs (but not i_osync)

    On Tue, 3 Mar 1998 08:44:28 +0100 (MET), Rik van Riel
    <> said:

    > On Tue, 3 Mar 1998, Itai Nahshon wrote:
    >> My estimate is that a btree/extents based structure will pay for itself
    >> only if the average extent for large files is more than 12 blocks.

    > It usually is far above that, but if we want to be sure,
    > we could increase the preallocation to 16 or even 32
    > blocks... (maybe sysctl tunable, or as a mount option)
    > Only sparse files will be relatively expensive, but still
    > less expensive than today...

    I've already got patches to make the preallocation tunable, with
    separate preallocation handling for directories.


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