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    SubjectRe: [patch 01/13] io-accounting: core statistics
    On Fri, 08 Dec 2006 13:04:15 +0100
    Eric Dumazet <dada1@cosmosbay.com> wrote:

    > akpm@osdl.org a écrit :
    > > From: Andrew Morton <akpm@osdl.org>
    > >
    > > The present per-task IO accounting isn't very useful. It simply counts the
    > > number of bytes passed into read() and write(). So if a process reads 1MB
    > > from an already-cached file, it is accused of having performed 1MB of I/O,
    > > which is wrong.
    >
    > Any chance we can report some io accounting values in getresource()/wait4()...
    > too ?

    That sounds logical.

    > # /usr/bin/time find /usr -name 'foo'
    > 0.24user 0.22system 0:00.70elapsed 66%CPU (0avgtext+0avgdata 0maxresident)k
    > 0inputs+0outputs (0major+222minor)pagefaults 0swaps

    But where? ri_inblock and ru_outblock seem to be count-of-operations, not
    number-of-bytes.

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