For Melanox NICs you can bind interrupts manually.
- Get interrupts numbers
cat /proc/interrupts | grep eth
it will the first column - Bind
echo i > /proc/irq/n/smp_affinity
Wherei
CPU core mask andn
the interrupt number
Core Mask
0 1
1 2
2 4
3 8
4 10
5 20
6 40
7 80
8 100
9 200
10 300
....