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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
uhci_hcd:usb4, uhci_hcd:usb7 i17 derive     Interrupt 17, for device(s): uhci_hcd:usb4, uhci_hcd:usb7
uhci_hcd:usb8, ata_generic, i801_smbus i18 derive     Interrupt 18, for device(s): uhci_hcd:usb8, ata_generic, i801_smbus
ehci_hcd:usb1, uhci_hcd:usb5 i22 derive     Interrupt 22, for device(s): ehci_hcd:usb1, uhci_hcd:usb5
ehci_hcd:usb2, uhci_hcd:usb6 i23 derive     Interrupt 23, for device(s): ehci_hcd:usb2, uhci_hcd:usb6
hpet2 i24 derive     Interrupt 24, for device(s): hpet2
hpet3 i25 derive     Interrupt 25, for device(s): hpet3
enp0s25 i32 derive     Interrupt 32, for device(s): enp0s25
0000:00:1f.2 i33 derive     Interrupt 33, for device(s): 0000:00:1f.2
radeon i34 derive     Interrupt 34, for device(s): radeon
mei_me i35 derive     Interrupt 35, for device(s): mei_me
snd_hda_intel:card0 i36 derive     Interrupt 36, for device(s): snd_hda_intel:card0
snd_hda_intel:card1 i37 derive     Interrupt 37, for device(s): snd_hda_intel:card1
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
Deferred Error APIC interrupts iDFR derive     Interrupt DFR, for device(s): Deferred Error 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      
Posted-interrupt notification event iPIN derive     Interrupt PIN, for device(s): Posted-interrupt notification event
Nested posted-interrupt event iNPI derive     Interrupt NPI, for device(s): Nested posted-interrupt event
Posted-interrupt wakeup event iPIW derive     Interrupt PIW, for device(s): Posted-interrupt wakeup event