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    SubjectRe: CFS Bandwidth Control - Test results of cgroups tasks pinned vs unpinnede
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    On Tue, 2011-09-13 at 09:45 +0530, Srivatsa Vaddagiri wrote:
    > * Peter Zijlstra <a.p.zijlstra@chello.nl> [2011-09-12 14:35:43]:
    >
    > > Of course it does.. and I bet you can improve that slightly if you
    > > manage to fix some of the numerical nightmares that live in the cgroup
    > > load-balancer (Paul, care to share your WIP?)
    >
    > Booting with "nohz=off" also helps significantly.
    >
    > With nohz=on, average idle time (over 1 min) is 10.3%
    > With nohz=off, average idle time (over 1 min) is 3.9%

    So we should put the cpufreq/idle governor into the nohz/idle path, it
    already tries to predict the idle duration in order to pick a C state,
    that same prediction should be used to determine if stopping the tick is
    worth it.

    This has come up previously, but I can't quite recollect in what
    context.


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