Here is the command I issued:
root@vishal-Think:~# echo "0" > /proc/irq/0/smp_affinity
And here is the error:
-bash: echo: write error: Input/output error
The ls command shows that root has write permissions:
root@vishal-Think:~# ls -l /proc/irq/0/smp_affinity -rw------- 1 root root 0 May 21 16:30 /proc/irq/0/smp_affinity
Please tell me how I could fix this.
Another question of mine is that even after disabling irqbalance and rebooting the machine, I still see interrupts going to cpus other than cpu0. Why could that be happening?