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    SubjectRe: [PATCH] cgroup: limit block I/O bandwidth
    * Jens Axboe <jens.axboe@oracle.com> [2008-01-20 15:32:40]:

    > On Sun, Jan 20 2008, Andrea Righi wrote:
    > Your approach is totally flawed, imho. For instance, you don't want a
    > process to be able to dirty memory at foo mb/sec but only actually
    > write them out at bar mb/sec.
    >
    > The noop-iosched changes are also very buggy. The queue back pointer
    > breaks reference counting and the task pointer storage assumes the task
    > will also always be around. That's of course not the case.
    >
    > IOW, you are doing this at the wrong level.

    Andrea, Some of the problems pointed out so far have been solved in
    the IO controller from OpenVZ (cc'ing Pavel for inputs).

    >
    > What problem are you trying to solve?
    >
    > --
    > Jens Axboe
    >

    --
    Warm Regards,
    Balbir Singh
    Linux Technology Center
    IBM, ISTL


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