Why NVMe MSIx vectors affinity set across NUMA nodes?

[Keith Busch]

On Wed, Jan 24, 2018 at 07:47:44AM +0530, Ganapatrao Kulkarni wrote:
> application uses libnuma to align to numa locality.
> here the driver is breaking the affinity.
> certainly having affinity with remote node cpu will add latency to
> interrupt response time.
> here it is for some NVMe queues.

I bet you can't come up with an IRQ CPU affinity map that performs better
than the current setup.