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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
1-edge i8042 i1 derive     Interrupt 1, for device(s): 1-edge i8042
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
12-edge i8042 i12 derive     Interrupt 12, for device(s): 12-edge i8042
16-fasteoi i801_smbus i16 derive     Interrupt 16, for device(s): 16-fasteoi i801_smbus
21-fasteoi virtio3, virtio4 i21 derive     Interrupt 21, for device(s): 21-fasteoi virtio3, virtio4
16384-edge PCIe PME, aerdrv, pciehp i24 derive     Interrupt 24, for device(s): 16384-edge PCIe PME, aerdrv, pciehp
18432-edge PCIe PME, aerdrv, pciehp i25 derive     Interrupt 25, for device(s): 18432-edge PCIe PME, aerdrv, pciehp
20480-edge PCIe PME, aerdrv, pciehp i26 derive     Interrupt 26, for device(s): 20480-edge PCIe PME, aerdrv, pciehp
22528-edge PCIe PME, aerdrv, pciehp i27 derive     Interrupt 27, for device(s): 22528-edge PCIe PME, aerdrv, pciehp
24576-edge PCIe PME, aerdrv, pciehp i28 derive     Interrupt 28, for device(s): 24576-edge PCIe PME, aerdrv, pciehp
26624-edge PCIe PME, aerdrv, pciehp i29 derive     Interrupt 29, for device(s): 26624-edge PCIe PME, aerdrv, pciehp
28672-edge PCIe PME, aerdrv, pciehp i30 derive     Interrupt 30, for device(s): 28672-edge PCIe PME, aerdrv, pciehp
1572864-edge virtio1-config i31 derive     Interrupt 31, for device(s): 1572864-edge virtio1-config
1572865-edge virtio1-virtqueues i32 derive     Interrupt 32, for device(s): 1572865-edge virtio1-virtqueues
2097152-edge virtio2-config i33 derive     Interrupt 33, for device(s): 2097152-edge virtio2-config
2097153-edge virtio2-req.0 i34 derive     Interrupt 34, for device(s): 2097153-edge virtio2-req.0
524288-edge virtio0-config i35 derive     Interrupt 35, for device(s): 524288-edge virtio0-config
524289-edge virtio0-input.0 i36 derive     Interrupt 36, for device(s): 524289-edge virtio0-input.0
524290-edge virtio0-output.0 i37 derive     Interrupt 37, for device(s): 524290-edge virtio0-output.0
512000-edge ahci[0000:00:1f.2] i38 derive     Interrupt 38, for device(s): 512000-edge ahci[0000:00:1f.2]
1048576-edge xhci_hcd i39 derive     Interrupt 39, for device(s): 1048576-edge xhci_hcd
1048577-edge xhci_hcd i40 derive     Interrupt 40, for device(s): 1048577-edge xhci_hcd
1048578-edge xhci_hcd i41 derive     Interrupt 41, for device(s): 1048578-edge xhci_hcd
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