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    SubjectRe: [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28
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    On Wed, 2008-09-17 at 16:47 +0200, Eric Dumazet wrote:

    > Could you please try following patch ?
    >
    > [PATCH] security_ops moved to read_mostly section
    >
    > "struct security_operations *security_ops" should be moved to read_mostly
    > section in order to NOT let it share a cache line with higly modified variables.

    v2.6.26-974-g2846693 (tip of revert reverts tree, == 847106f)
    16384 87380 1 1 60.00 94350.45
    16384 87380 1 1 60.01 95857.25
    16384 87380 1 1 60.00 95334.84
    16384 87380 1 1 60.00 95052.11

    v2.6.26-659-g7804ad8 (first commit prior, == 2069f45)
    16384 87380 1 1 60.00 98630.64
    16384 87380 1 1 60.00 98653.14
    16384 87380 1 1 60.00 99162.65
    16384 87380 1 1 60.00 98652.38

    v2.6.26-974-g2846693 patched
    16384 87380 1 1 60.00 95877.41
    16384 87380 1 1 60.00 95810.27
    16384 87380 1 1 60.00 95530.03
    16384 87380 1 1 60.00 94968.12

    (poo, "it" didn't die)



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