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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
cascade i2 derive     Interrupt 2, for device(s): cascade
3 i3 derive      
4 i4 derive      
5 i5 derive      
uhci_hcd:usb5, uhci_hcd:usb7 i7 derive     Interrupt 7, for device(s): uhci_hcd:usb5, uhci_hcd:usb7
rtc0 i8 derive     Interrupt 8, for device(s): rtc0
acpi i9 derive     Interrupt 9, for device(s): acpi
ehci_hcd:usb2, uhci_hcd:usb6 i10 derive     Interrupt 10, for device(s): ehci_hcd:usb2, uhci_hcd:usb6
uhci_hcd:usb3 i11 derive     Interrupt 11, for device(s): uhci_hcd:usb3
i8042 i12 derive     Interrupt 12, for device(s): i8042
uhci_hcd:usb4 i14 derive     Interrupt 14, for device(s): uhci_hcd:usb4
ehci_hcd:usb1, uhci_hcd:usb8 i15 derive     Interrupt 15, for device(s): ehci_hcd:usb1, uhci_hcd:usb8
PCIe PME, pciehp i40 derive     Interrupt 40, for device(s): PCIe PME, pciehp
PCIe PME, pciehp i41 derive     Interrupt 41, for device(s): PCIe PME, pciehp
PCIe PME, pciehp i42 derive     Interrupt 42, for device(s): PCIe PME, pciehp
ahci i43 derive     Interrupt 43, for device(s): ahci
eth0-rx-0 i44 derive     Interrupt 44, for device(s): eth0-rx-0
eth0-tx-0 i45 derive     Interrupt 45, for device(s): eth0-tx-0
eth0 i46 derive     Interrupt 46, for device(s): eth0
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
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
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