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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
2-edge timer i0 derive     Interrupt 0, for device(s): 2-edge timer
1-edge i8042 i1 derive     Interrupt 1, for device(s): 1-edge i8042
7-edge parport0 i7 derive     Interrupt 7, for device(s): 7-edge parport0
8-edge rtc0 i8 derive     Interrupt 8, for device(s): 8-edge rtc0
9-fasteoi acpi i9 derive     Interrupt 9, for device(s): 9-fasteoi acpi
16-fasteoi i915 i16 derive     Interrupt 16, for device(s): 16-fasteoi i915
17-fasteoi uhci_hcd:usb3 i17 derive     Interrupt 17, for device(s): 17-fasteoi uhci_hcd:usb3
18-fasteoi uhci_hcd:usb4 i18 derive     Interrupt 18, for device(s): 18-fasteoi uhci_hcd:usb4
19-fasteoi uhci_hcd:usb5 i19 derive     Interrupt 19, for device(s): 19-fasteoi uhci_hcd:usb5
20-fasteoi ehci_hcd:usb1, uhci_hcd:usb2 i20 derive     Interrupt 20, for device(s): 20-fasteoi ehci_hcd:usb1, uhci_hcd:usb2
22-fasteoi ata_piix i22 derive     Interrupt 22, for device(s): 22-fasteoi ata_piix
23-fasteoi i801_smbus, ata_piix i23 derive     Interrupt 23, for device(s): 23-fasteoi i801_smbus, ata_piix
442368-edge snd_hda_intel:card0 i24 derive     Interrupt 24, for device(s): 442368-edge snd_hda_intel:card0
1048576-edge enp2s0 i25 derive     Interrupt 25, for device(s): 1048576-edge enp2s0
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
Hypervisor callback interrupts iHYP derive     Interrupt HYP, for device(s): Hypervisor callback interrupts
Hyper-V reenlightenment interrupts iHRE derive     Interrupt HRE, for device(s): Hyper-V reenlightenment interrupts
Hyper-V stimer0 interrupts iHVS derive     Interrupt HVS, for device(s): Hyper-V stimer0 interrupts
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