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    SubjectRe: [patch] CFS scheduler, -v8

    * Balbir Singh <> wrote:

    > With -v7 I would run the n/n+1 test. Basically on a system with n
    > cpus, I would run n+1 tasks and see how their load is distributed. I
    > usually find that the last two tasks would get stuck on one CPU on the
    > system and would get half the cpu time as their other peers. I think
    > this issue has been around for long even before CFS. But while I was
    > investigating that, I found that with -v8, all the n+1 tasks are stuck
    > on the same cpu.

    i believe this problem is specific to powerpc - load is distributed fine
    on i686/x86_64 and your sched_debug shows a cpu_load[0] == 0 on CPU#2
    which is 'impossible'. (I sent a few suggestions off-Cc about how to
    debug this.)

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      Last update: 2007-05-02 12:09    [W:0.020 / U:11.004 seconds]
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