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    SubjectRe: [RFC PATCH 0/4] Gang scheduling in CFS

    * Nikunj A Dadhania <nikunj@linux.vnet.ibm.com> wrote:

    > On Mon, 19 Dec 2011 17:15:05 +0530, Nikunj A Dadhania <nikunj@linux.vnet.ibm.com> wrote:
    > > >
    > > > What's behind this huge speedup? Does ebizzy use user-space
    > > > spinlocks perhaps? Could we do something on the user-space side
    > > > to get a similar speedup?
    > > >
    > > Some more oprofile data here for the above ebizzy-2VM run:
    > >
    > That is readprofile data, kernel booted with profile=2

    Btw., you could try this newfangled tools/perf/ thing to profile
    the kernel ;-)

    Thanks,

    Ingo


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