[openib-general] [PATCH/RFC] IB/ipoib: add selective tx signaling

[Roland Dreier]

 > I am thinking about detecting that we are getting a completion each
 > couple of microseconds, and just polling a bit more (even if CQ is empty)
 > simply to avoid paying 10s micro for the next interrupt.
 > This is just a fuzzy idea, but maybe this can work?

It's a good area to look at (assuming it's worth spending yet more
time on IPoIB performance), but I think it's quite difficult to come
up with a good solution.  For example search for Jamal's paper "When
NAPI Comes to Town" to see some related work that was a failure in the
end.