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    SubjectRe: [BUG] linux-2.6.28-rc3 regression: IRQ smp_affinities not respected
    Eric Dumazet wrote:

    > Hi all
    >
    > One more problem it seems on 2.6.28-rc3
    >
    > I wanted to get maximal throughput from my machine on a
    > network bench with 3 Gigabit
    > links delivering 600.000 packets per second, so I tried to
    > play with smp_affinity to
    > dedicate one CPU for each NIC.
    >
    > It worked with 2.6.27, so there is a regression on this part.

    I believe this may be the patch that broke it:

    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ce6fce4295ba727b36fdc73040e444bd1aae64cd

    I don't remember all the details, but the Broadcom 5708 chip is
    affected because it does not support MSI per-vector masking.

    One way to get around is to disable MSI with bnx2 parameter
    disable_msi=1.




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