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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
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 ehci_hcd:usb1 i16 derive     Interrupt 16, for device(s): 16-fasteoi ehci_hcd:usb1
18-fasteoi i801_smbus i18 derive     Interrupt 18, for device(s): 18-fasteoi i801_smbus
23-fasteoi ehci_hcd:usb3 i23 derive     Interrupt 23, for device(s): 23-fasteoi ehci_hcd:usb3
0-edge dmar0 i24 derive     Interrupt 24, for device(s): 0-edge dmar0
1-edge dmar1 i25 derive     Interrupt 25, for device(s): 1-edge dmar1
2097152-edge enp4s0-rx-0 i31 derive     Interrupt 31, for device(s): 2097152-edge enp4s0-rx-0
2097153-edge enp4s0-tx-0 i32 derive     Interrupt 32, for device(s): 2097153-edge enp4s0-tx-0
2097154-edge enp4s0 i33 derive     Interrupt 33, for device(s): 2097154-edge enp4s0
512000-edge ahci[0000:00:1f.2] i34 derive     Interrupt 34, for device(s): 512000-edge ahci[0000:00:1f.2]
2621440-edge xhci_hcd i35 derive     Interrupt 35, for device(s): 2621440-edge xhci_hcd
2621441-edge xhci_hcd i36 derive     Interrupt 36, for device(s): 2621441-edge xhci_hcd
2621442-edge xhci_hcd i37 derive     Interrupt 37, for device(s): 2621442-edge xhci_hcd
2621443-edge xhci_hcd i38 derive     Interrupt 38, for device(s): 2621443-edge xhci_hcd
2621444-edge xhci_hcd i39 derive     Interrupt 39, for device(s): 2621444-edge xhci_hcd
2621445-edge xhci_hcd i40 derive     Interrupt 40, for device(s): 2621445-edge xhci_hcd
2621446-edge xhci_hcd i41 derive     Interrupt 41, for device(s): 2621446-edge xhci_hcd
2621447-edge xhci_hcd i42 derive     Interrupt 42, for device(s): 2621447-edge xhci_hcd
442368-edge snd_hda_intel:card0 i43 derive     Interrupt 43, for device(s): 442368-edge snd_hda_intel:card0
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