IRQs in CCR1072-1G-8S+ Ethernet vs SFP+

RouterOS General
1

Hello,

I have one CCR1072-1G-8S+ which 4 SFP+ ports and 1 Ethernet being used.

Under Resources > IRQ, there aren’t any line with any reference to the SFP ports, the only irq counter that increase their number is the “eth” and “ether1” which are listed to Active CPU 4 and 0 respectively:
irq.png
Under Resources > CPU there are only one core working hard, however, the global cpu usage is 1%:
cpu.png
I don’t understand some things:
Why the SFP ports aren’t listed in the irq?
Why only have high load the core 14?
Can be linked the “ether1” which have “Active CPU” 0 to this core 14?

Thanks,