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    SubjectRe: [PATCH 0/18] sched: simplified fork, enable load average into LB and power awareness scheduling
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    On Mon, Dec 10, 2012 at 4:22 PM, Alex Shi <alex.shi@intel.com> wrote:
    > This patchset base on tip/sched/core tree temporary, since it is more
    > steady than tip/master. and it's easy to rebase on tip/master.
    >
    > It includes 3 parts changes.
    >
    > 1, simplified fork, patch 1~4, that simplified the fork/exec/wake log in
    > find_idlest_group and select_task_rq_fair. it can increase 10+%
    > hackbench process and thread performance on our 4 sockets SNB EP machine.
    >
    > 2, enable load average into LB, patch 5~9, that using load average in
    > load balancing, with a runnable load value industrialization bug fix and
    > new fork task load contrib enhancement.
    >
    > 3, power awareness scheduling, patch 10~18,
    > Defined 2 new power aware policy balance and
    > powersaving, and then try to spread or shrink tasks on CPU unit
    > according the different scheduler policy. That can save much power when
    > task number in system is no more then cpu number.

    tried with sysbench fileio test rndrw mode, with half thread of LCPU number,
    performance is similar, power can save about 5~10 Watts on 2 sockets SNB EP
    and NHM EP boxes.

    Any comments :)
    >
    > Any comments are appreciated!
    >
    > Best regards!
    > Alex
    >
    > [PATCH 01/18] sched: select_task_rq_fair clean up
    > [PATCH 02/18] sched: fix find_idlest_group mess logical
    > [PATCH 03/18] sched: don't need go to smaller sched domain
    > [PATCH 04/18] sched: remove domain iterations in fork/exec/wake
    > [PATCH 05/18] sched: load tracking bug fix
    > [PATCH 06/18] sched: set initial load avg of new forked task as its
    > [PATCH 07/18] sched: compute runnable load avg in cpu_load and
    > [PATCH 08/18] sched: consider runnable load average in move_tasks
    > [PATCH 09/18] Revert "sched: Introduce temporary FAIR_GROUP_SCHED
    > [PATCH 10/18] sched: add sched_policy in kernel
    > [PATCH 11/18] sched: add sched_policy and it's sysfs interface
    > [PATCH 12/18] sched: log the cpu utilization at rq
    > [PATCH 13/18] sched: add power aware scheduling in fork/exec/wake
    > [PATCH 14/18] sched: add power/performance balance allowed flag
    > [PATCH 15/18] sched: don't care if the local group has capacity
    > [PATCH 16/18] sched: pull all tasks from source group
    > [PATCH 17/18] sched: power aware load balance,
    > [PATCH 18/18] sched: lazy powersaving balance
    > --
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