How to change SMP affinity of an IRQ on Ubuntu domU inside Xen XCP?
- by Alexander Gladysh
I'd like to change IRQ SMP affinity for reasons, outlined in this question: CPU0 is swamped with eth1 interrupts
But I can't — I see Input/output error when I try to write to /proc/irq/*/smp_affinity.
Please point me to the HOWTO on the matter. (A formal reference on /proc/irq/*/ would be cool as well.)
Gory details:
Note that this is a VM…