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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
4-edge ttyS0 i4 derive     Interrupt 4, for device(s): 4-edge ttyS0
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 mmc0 i16 derive     Interrupt 16, for device(s): 16-fasteoi mmc0
18-fasteoi ehci_hcd:usb1 i18 derive     Interrupt 18, for device(s): 18-fasteoi ehci_hcd:usb1
19-fasteoi ahci[0000:00:11.0] i19 derive     Interrupt 19, for device(s): 19-fasteoi ahci[0000:00:11.0]
36864-edge PCIe PME i25 derive     Interrupt 25, for device(s): 36864-edge PCIe PME
38912-edge PCIe PME i27 derive     Interrupt 27, for device(s): 38912-edge PCIe PME
40960-edge PCIe PME i29 derive     Interrupt 29, for device(s): 40960-edge PCIe PME
524288-edge enp1s0 i31 derive     Interrupt 31, for device(s): 524288-edge enp1s0
524289-edge enp1s0-rx-0 i32 derive     Interrupt 32, for device(s): 524289-edge enp1s0-rx-0
524290-edge enp1s0-rx-1 i33 derive     Interrupt 33, for device(s): 524290-edge enp1s0-rx-1
524291-edge enp1s0-tx-0 i34 derive     Interrupt 34, for device(s): 524291-edge enp1s0-tx-0
524292-edge enp1s0-tx-1 i35 derive     Interrupt 35, for device(s): 524292-edge enp1s0-tx-1
1048576-edge enp2s0 i37 derive     Interrupt 37, for device(s): 1048576-edge enp2s0
1048577-edge enp2s0-rx-0 i38 derive     Interrupt 38, for device(s): 1048577-edge enp2s0-rx-0
1048578-edge enp2s0-rx-1 i39 derive     Interrupt 39, for device(s): 1048578-edge enp2s0-rx-1
1048579-edge enp2s0-tx-0 i40 derive     Interrupt 40, for device(s): 1048579-edge enp2s0-tx-0
1048580-edge enp2s0-tx-1 i41 derive     Interrupt 41, for device(s): 1048580-edge enp2s0-tx-1
262144-edge xhci_hcd i43 derive     Interrupt 43, for device(s): 262144-edge xhci_hcd
1572864-edge enp3s0 i44 derive     Interrupt 44, for device(s): 1572864-edge enp3s0
262145-edge xhci_hcd i45 derive     Interrupt 45, for device(s): 262145-edge xhci_hcd
1572865-edge enp3s0-rx-0 i46 derive     Interrupt 46, for device(s): 1572865-edge enp3s0-rx-0
262146-edge xhci_hcd i47 derive     Interrupt 47, for device(s): 262146-edge xhci_hcd
1572866-edge enp3s0-rx-1 i48 derive     Interrupt 48, for device(s): 1572866-edge enp3s0-rx-1
262147-edge xhci_hcd i49 derive     Interrupt 49, for device(s): 262147-edge xhci_hcd
1572867-edge enp3s0-tx-0 i50 derive     Interrupt 50, for device(s): 1572867-edge enp3s0-tx-0
262148-edge xhci_hcd i51 derive     Interrupt 51, for device(s): 262148-edge xhci_hcd
1572868-edge enp3s0-tx-1 i52 derive     Interrupt 52, for device(s): 1572868-edge enp3s0-tx-1
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