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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
floppy i6 derive     Interrupt 6, for device(s): floppy
parport0 i7 derive     Interrupt 7, for device(s): parport0
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
ata_piix i14 derive     Interrupt 14, for device(s): ata_piix
ata_piix i15 derive     Interrupt 15, for device(s): ata_piix
aic79xx i16 derive     Interrupt 16, for device(s): aic79xx
ehci_hcd:usb1, uhci_hcd:usb2, aic79xx i17 derive     Interrupt 17, for device(s): ehci_hcd:usb1, uhci_hcd:usb2, aic79xx
uhci_hcd:usb4 i18 derive     Interrupt 18, for device(s): uhci_hcd:usb4
uhci_hcd:usb3, i801_smbus i19 derive     Interrupt 19, for device(s): uhci_hcd:usb3, i801_smbus
eth0 i65 derive     Interrupt 65, for device(s): eth0
eth1 i66 derive     Interrupt 66, for device(s): eth1
ioat-msi i67 derive     Interrupt 67, for device(s): ioat-msi
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