./xsk_fwd -i ens1f0 -q 2 -i ens1f1 -q 2 -c 5 -i ens1f0 -q 3 -i ens1f1 - q 3 -c 6 On 5.10, the cores (2,3) assigned interrupts for the queues (2,3) are idle when there is no traffic. On 5.11, the cores immediately go to 100% system time when the program starts (as viewed in htop). There is no network traffic. Intel 710/i40e. I tried this with xsk_fwd built from 5.10 and 5.11 trees with the same result. Is this behavior change expected?