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IRQ

# cat /proc/interrupts 
           CPU0       
  0:        175   IO-APIC-edge      timer
  1:        167   IO-APIC-edge      i8042
  8:          0   IO-APIC-edge      rtc0
  9:          0   IO-APIC-fasteoi   acpi
 12:        225   IO-APIC-edge      i8042
 14:       5195   IO-APIC-edge      ata_piix
 15:      39732   IO-APIC-edge      ata_piix
 19:      30270   IO-APIC-fasteoi   eth0
 20:       6460   IO-APIC-fasteoi   vboxguest
 21:     330033   IO-APIC-fasteoi   ahci, Intel 82801AA-ICH
 22:          0   IO-APIC-fasteoi   ohci_hcd:usb1
NMI:          0   Non-maskable interrupts
LOC:    3649086   Local timer interrupts
SPU:          0   Spurious interrupts
PMI:          0   Performance monitoring interrupts
IWI:          0   IRQ work interrupts
RES:          0   Rescheduling interrupts
CAL:          0   Function call interrupts
TLB:          0   TLB shootdowns
TRM:          0   Thermal event interrupts
THR:          0   Threshold APIC interrupts
MCE:          0   Machine check exceptions
MCP:         35   Machine check polls
ERR:          0
MIS:          0