14 Aug, 2012

1 commit

  • Make stop scheduler class do the same accounting as other classes,

    Migration threads can be caught in the act while doing exec balancing,
    leading to the below due to use of unmaintained ->se.exec_start. The
    load that triggered this particular instance was an apparently out of
    control heavily threaded application that does system monitoring in
    what equated to an exec bomb, with one of the VERY frequently migrated
    tasks being ps.

    %CPU PID USER CMD
    99.3 45 root [migration/10]
    97.7 53 root [migration/12]
    97.0 57 root [migration/13]
    90.1 49 root [migration/11]
    89.6 65 root [migration/15]
    88.7 17 root [migration/3]
    80.4 37 root [migration/8]
    78.1 41 root [migration/9]
    44.2 13 root [migration/2]

    Signed-off-by: Mike Galbraith
    Signed-off-by: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1344051854.6739.19.camel@marge.simpson.net
    Signed-off-by: Thomas Gleixner

    Mike Galbraith
     

17 Nov, 2011

1 commit