> 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
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