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    SubjectRe: Linux 2.6.29
    David Rees wrote:
    > Either way - forcing the data to be synced to disk a couple times
    > every second is a hack and causes fragmentation in filesystems without
    > delayed allocation. Fragmentation really goes up if you are recording
    > multiple shows at once.

    Check out posix_fallocate(3). Not appropriate for every situation,
    might eat additional disk bandwidth...

    But if you are looking to combat fragmentation, pre-allocation (manual
    or kernel-assisted) is a relevant technique. Plus, overwriting existing
    data blocks is a LOT cheaper than appending to a file. fsync's more
    quickly to disk, too.


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      Last update: 2009-04-02 23:59    [W:0.027 / U:2.716 seconds]
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