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    SubjectRE: limit resident memory size
    well, the goal is to enforce strict upper bounds on
    how much resources a process can consume, including
    memory, disk bandwidth etc. I understand that this
    may not give the best aggregate system performance,
    but so is any proportional sharing scheme. The impact
    of swapping/paging on the other processes can be
    minimized by rate-limiting the disk I/O that the
    process does, for swapping or anything else.

    Muthian.

    --- David Schwartz <davids@webmaster.com> wrote:
    >
    > > I would like to limit the maximum resident memory
    > size
    > > of a process within a threshold, i.e. if its
    > virtual
    > > memory footprint exceeds this threshold, it needs
    > to
    > > swap out pages *only* from within its VM space.
    >
    > Why? If you think this is a good way to be nice to
    > other processes, you're
    > wrong.
    >
    > > First, is there a way this can be done at
    > application
    > > level ? The setrlimit interface seems to contain
    > an
    > > option for specifying max resident set size, but
    > it
    > > doesnt seem like it is implemented as of 2.4 -- am
    > I
    > > wrong ?
    >
    > > If the kernel doesnt currently support it, is
    > there an
    > > efficient way (data structure etc) to traverse the
    > > resident set of a *process* in lru fashion ? All
    > the
    > > page replacement and swapping code work on the
    > entire
    > > page lists -- is there any simple way to group
    > these
    > > per process ?
    >
    > One process paging and swapping excessively will
    > hurt other processes that
    > aren't. What's your outer problem? What you're
    > trying to do doesn't seem to
    > have any rational purpose.
    >
    > DS
    >
    >


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