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    SubjectRe: [PATCH 0/5] x86,smp: make ticket spinlock proportional backoff w/ auto tuning
    On Wed, Jan 09, 2013 at 06:20:35PM +0530, Raghavendra K T wrote:
    > I ran kernbench on 32 core (mx3850) machine with 3.8-rc2 base.
    > x base_3.8rc2
    > + rik_backoff
    > N Min Max Median Avg Stddev
    > x 8 222.977 231.16 227.735 227.388 3.1512986
    > + 8 218.75 232.347 229.1035 228.25425 4.2730225
    > No difference proven at 95.0% confidence

    I got similar results on smaller systems (1 socket, dual-cores and quad-cores)
    when running Rik's latest series, no big difference for good nor for worse,
    but I also think Rik's work is meant to address bigger systems with more cores
    contending for any given spinlock.




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