I found the cpu0 has high hardware and software interrupts than other cpus, as the figure shows. I checked the value which’s ff in the smp_affinity. I also tried to modified ethernet smp_affinity value to f0, but the interrupts increased only in cpu4. So, does it mean the irqbalance doesn’t work? How can I make the interrupts allocate to the other cpus uniformly?
Hi,
This looks to be default behavior of kernel. Please try taskset(1) - Linux manual page to run the process on designated CPU core and see if the interrupts can be moved to other cores.