[ofa-general] Coalescing interrupts in SRP

[Chris Worley]

On Tue, Jun 9, 2009 at 4:55 PM, Roland Dreier<rdreier at cisco.com> wrote:
>
>  > I'm not sure if the SRP stack (initiator side) polls or interrupts,
>  > but I seem to be hitting a wall at ~120K transactions/second.
>
> Interesting.  The SRP initiator is using interrupts to call
> srp_completion(), which then services all pending completions and rearms
> the CQ.

Does the "ib_req_notify_cq" call do the rearm?

If so, does that mean that until it rearms, the interrupt is disabled?

If so, shouldn't a delay before the rearm (after clearing the current
queue) in effect coalesce?

Chris