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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
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
uhci_hcd:usb1, i915 i16 derive     Interrupt 16, for device(s): uhci_hcd:usb1, i915
uhci_hcd:usb2, uhci_hcd:usb6 i17 derive     Interrupt 17, for device(s): uhci_hcd:usb2, uhci_hcd:usb6
i801_smbus, uhci_hcd:usb7, eth1 i18 derive     Interrupt 18, for device(s): i801_smbus, uhci_hcd:usb7, eth1
ehci_hcd:usb4 i22 derive     Interrupt 22, for device(s): ehci_hcd:usb4
uhci_hcd:usb3, ehci_hcd:usb5 i23 derive     Interrupt 23, for device(s): uhci_hcd:usb3, ehci_hcd:usb5
eth2 i42 derive     Interrupt 42, for device(s): eth2
ahci i43 derive     Interrupt 43, for device(s): ahci
snd_hda_intel i44 derive     Interrupt 44, for device(s): snd_hda_intel
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