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    SubjectRe: [openib-general] [PATCH 07/16] ehca: interrupt handling routines
    Date
    >     Heiko> Yes, I agree. It would not be an optimal solution, because
    > Heiko> other upper level protocols (e.g. SDP, SRP, etc.) or
    > Heiko> userspace verbs would not be affected by this
    > Heiko> changes. Nevertheless, how can an improved "scaling" or
    > Heiko> "SMP" version of IPoIB look like. How could it be
    > Heiko> implemented?
    >
    > The trivial way to do it would be to use the same idea as the current
    > ehca driver: just create a thread for receive CQ events and a thread
    > for send CQ events, and defer CQ polling into those two threads.
    >
    > Something even better may be possible by specializing to IPoIB of
    > course.

    The hardware IRQ should go to some CPU close to the hardware itself.
    The
    softirq (or whatever else) should go to the same CPU that is handling
    the
    user-level task for that message. Or a CPU close to it, at least.


    Segher

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