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    SubjectRe: Killing/balancing processes when overcommited
    Date
    On Friday 13 September 2002 07:53 am, Denis Vlasenko wrote:
    > On 11 September 2002 16:08, Jim Sibley wrote:
    > > resource
    > > group priority kill priority
    > > system 0 0 - never
    > > kill support 1 1
    > > payroll 2 2
    > > production 3 3
    > > general user 4 4
    > > production backgournd 5 3
    >
    > ^^^
    > make sure testing and general user are
    > killed BEFORE production
    >
    > > testing 6 5
    >
    > I like this. Maybe map it to user gid and provide /proc interface?
    >
    > Let's say on your server you allocated gids this way:
    > 0 - system
    > 100 - support
    > 110 - payroll
    > 120 - production
    > 200 - general user
    > 130 - production background
    > 500 - testing
    >
    > # echo "0 100 110 120 200 130 500" >/proc/resourceprio
    > # echo "0 100 110 120 130 200 500" >/proc/killprio

    Don't base it on gid. Remember, a user can be a member of multiple
    gids for file access. At this point you may get a payroll/production
    conflict, or a production/production background conflict.

    You really have to use a resource accounting structure that allows
    one and only one id per process. A user may (like groups) have
    access to multiple resource accounts, but a given process should
    only have one.
    --
    -------------------------------------------------------------------------
    Jesse I Pollard, II
    Email: pollard@navo.hpc.mil

    Any opinions expressed are solely my own.
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