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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, uhci_hcd:usb8 i16 derive     Interrupt 16, for device(s): uhci_hcd:usb3, uhci_hcd:usb8
ehci_hcd:usb1, uhci_hcd:usb7, i801_smbus i18 derive     Interrupt 18, for device(s): ehci_hcd:usb1, uhci_hcd:usb7, i801_smbus
uhci_hcd:usb6 i19 derive     Interrupt 19, for device(s): uhci_hcd:usb6
uhci_hcd:usb4 i21 derive     Interrupt 21, for device(s): uhci_hcd:usb4
ehci_hcd:usb2, uhci_hcd:usb5 i23 derive     Interrupt 23, for device(s): ehci_hcd:usb2, uhci_hcd:usb5
eth0-rx-0 i67 derive     Interrupt 67, for device(s): eth0-rx-0
eth0-tx-0 i68 derive     Interrupt 68, for device(s): eth0-tx-0
eth0 i69 derive     Interrupt 69, for device(s): eth0
arcmsr i70 derive     Interrupt 70, for device(s): arcmsr
ahci i71 derive     Interrupt 71, for device(s): ahci
eth1-rx-0 i72 derive     Interrupt 72, for device(s): eth1-rx-0
eth1-tx-0 i73 derive     Interrupt 73, for device(s): eth1-tx-0
eth1 i74 derive     Interrupt 74, for device(s): eth1
ioat-msix i75 derive     Interrupt 75, for device(s): ioat-msix
ioat-msix i76 derive     Interrupt 76, for device(s): ioat-msix
ioat-msix i77 derive     Interrupt 77, for device(s): ioat-msix
ioat-msix i78 derive     Interrupt 78, for device(s): ioat-msix
ioat-msix i79 derive     Interrupt 79, for device(s): ioat-msix
ioat-msix i80 derive     Interrupt 80, for device(s): ioat-msix
ioat-msix i81 derive     Interrupt 81, for device(s): ioat-msix
ioat-msix i82 derive     Interrupt 82, for device(s): ioat-msix
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
APIC ICR read retries iRTR derive     Interrupt RTR, for device(s): APIC ICR read retries
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
Hypervisor callback interrupts iHYP derive     Interrupt HYP, for device(s): Hypervisor callback interrupts
ERR iERR derive      
MIS iMIS derive