Re: IRQ-CPU affinity for AF_XDP TX?

> For AF_XDP (in ZC or copy mode), the IRQ-CPU affinity plays a role in
> the RX direction to bind a CPU core to a particular NIC queue (mapping
> the CPU core to the NIC queue's IRQ).
>
> My question is does the IRQ or IRQ-CPU affinity play any role in the
> TX direction?
>
> An xsk is specific to a NIC queue and assuming there is only one core
> doing TX on that xsk, is there some IRQ/CPU configuration recommended
> for better performance?
>
> Does the recommendation change if busy-polling mode is used or not
> used? ZC or non-ZC?

Any advice or recommendation about IRQ-CPU affinity or usage for AF_XDP TX path?

Srivats