To see the interrupts occurring on your system, run the command:

# watch -n1 "cat /proc/interrupts"

           CPU0       CPU1
 0:         330          0   IO-APIC-edge      timer
 1:       11336          0   IO-APIC-edge      i8042
 4:           2          0   IO-APIC-edge
 6:           3          0   IO-APIC-edge      floppy
 ...
NMI:          0          0   Non-maskable interrupts
LOC:    5806923    6239132   Local timer interrupts
 ...

The watch command executes another command periodically, in this case "cat /proc/interrups". The -n1 option tells watch to execute the command every second.