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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
serial i3 derive     Interrupt 3, for device(s): serial
4 i4 derive      
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
megasas i16 derive     Interrupt 16, for device(s): megasas
radeon i19 derive     Interrupt 19, for device(s): radeon
uhci_hcd:usb3, uhci_hcd:usb5 i20 derive     Interrupt 20, for device(s): uhci_hcd:usb3, uhci_hcd:usb5
ehci_hcd:usb1, uhci_hcd:usb2, uhci_hcd:usb4 i21 derive     Interrupt 21, for device(s): ehci_hcd:usb1, uhci_hcd:usb2, uhci_hcd:usb4
ata_piix i23 derive     Interrupt 23, for device(s): ata_piix
PCIe PME i72 derive     Interrupt 72, for device(s): PCIe PME
PCIe PME i73 derive     Interrupt 73, for device(s): PCIe PME
PCIe PME i74 derive     Interrupt 74, for device(s): PCIe PME
PCIe PME i75 derive     Interrupt 75, for device(s): PCIe PME
PCIe PME i76 derive     Interrupt 76, for device(s): PCIe PME
PCIe PME i77 derive     Interrupt 77, for device(s): PCIe PME
PCIe PME i78 derive     Interrupt 78, for device(s): PCIe PME
eth0 i79 derive     Interrupt 79, for device(s): eth0
eth4-TxRx-0 i85 derive     Interrupt 85, for device(s): eth4-TxRx-0
eth4-TxRx-1 i86 derive     Interrupt 86, for device(s): eth4-TxRx-1
eth4-TxRx-2 i87 derive     Interrupt 87, for device(s): eth4-TxRx-2
eth4-TxRx-3 i88 derive     Interrupt 88, for device(s): eth4-TxRx-3
eth4 i89 derive     Interrupt 89, for device(s): eth4
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