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Shows the number of different IRQs received by the kernel. High disk or network traffic can cause a high number of interrupts (with good hardware and drivers this will be less so). Sudden high interrupt activity with no associated higher system activity is not normal.

Field Internal name Type Warn Crit Info
timer i0 derive     Interrupt 0, for device(s): timer
i8042 i1 derive     Interrupt 1, for device(s): i8042
rtc0 i8 derive     Interrupt 8, for device(s): rtc0
acpi i9 derive     Interrupt 9, for device(s): acpi
i8042 i12 derive     Interrupt 12, for device(s): i8042
uhci_hcd:usb3 i16 derive     Interrupt 16, for device(s): uhci_hcd:usb3
ehci_hcd:usb1, uhci_hcd:usb8 i18 derive     Interrupt 18, for device(s): ehci_hcd:usb1, uhci_hcd:usb8
uhci_hcd:usb5, uhci_hcd:usb7 i19 derive     Interrupt 19, for device(s): uhci_hcd:usb5, uhci_hcd:usb7
uhci_hcd:usb4 i21 derive     Interrupt 21, for device(s): uhci_hcd:usb4
ehci_hcd:usb2, uhci_hcd:usb6 i23 derive     Interrupt 23, for device(s): ehci_hcd:usb2, uhci_hcd:usb6
3w-9xxx i30 derive     Interrupt 30, for device(s): 3w-9xxx
ioat-msix i51 derive     Interrupt 51, for device(s): ioat-msix
ioat-msix i52 derive     Interrupt 52, for device(s): ioat-msix
ioat-msix i53 derive     Interrupt 53, for device(s): ioat-msix
ioat-msix i54 derive     Interrupt 54, for device(s): ioat-msix
ioat-msix i55 derive     Interrupt 55, for device(s): ioat-msix
ioat-msix i56 derive     Interrupt 56, for device(s): ioat-msix
ioat-msix i57 derive     Interrupt 57, for device(s): ioat-msix
ioat-msix i58 derive     Interrupt 58, for device(s): ioat-msix
snd_hda_intel i59 derive     Interrupt 59, for device(s): snd_hda_intel
eth0-rx-0 i60 derive     Interrupt 60, for device(s): eth0-rx-0
eth0-tx-0 i61 derive     Interrupt 61, for device(s): eth0-tx-0
eth0 i62 derive     Interrupt 62, for device(s): eth0
Non-maskable interrupts iNMI derive     Interrupt NMI, for device(s): Non-maskable interrupts
Local timer interrupts iLOC derive     Interrupt LOC, for device(s): Local timer interrupts
Spurious interrupts iSPU derive     Interrupt SPU, for device(s): Spurious interrupts
Performance monitoring interrupts iPMI derive     Interrupt PMI, for device(s): Performance monitoring interrupts
IRQ work interrupts iIWI derive     Interrupt IWI, for device(s): IRQ work interrupts
Rescheduling interrupts iRES derive     Interrupt RES, for device(s): Rescheduling interrupts
Function call interrupts iCAL derive     Interrupt CAL, for device(s): Function call interrupts
TLB shootdowns iTLB derive     Interrupt TLB, for device(s): TLB shootdowns
Thermal event interrupts iTRM derive     Interrupt TRM, for device(s): Thermal event interrupts
Threshold APIC interrupts iTHR derive     Interrupt THR, for device(s): Threshold APIC interrupts
Machine check exceptions iMCE derive     Interrupt MCE, for device(s): Machine check exceptions
Machine check polls iMCP derive     Interrupt MCP, for device(s): Machine check polls
ERR iERR derive      
MIS iMIS derive