Hi,

One of my colleagues has been trying to benchmark the maximum
performance of Mellanox ConnectX-3 Infiniband cards using IP over IB.
He was able to use smp_affinity to distribute Ethernet packet-receive
interrupts across many cores, and specify on which cores the
interrupts occurred. With IPoIB, smp_affinity successfully moved
interrupts to a specific core, but he was unable to distribute the
IPoIB interrupts onto multiple cores. Is there a design detail of how
IPoIB works that prevents this? Does anyone know of a setting,
configuration value, or feature that we're overlooking to allow this,
or is it impossible? Thanks in advance for your feedback.

Sincerely,
Christopher
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