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Graph information

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	Warning	Critical	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
12-edge i8042	i12	derive			Interrupt 12, for device(s): 12-edge i8042
14-edge ata_piix	i14	derive			Interrupt 14, for device(s): 14-edge ata_piix
15-edge ata_piix	i15	derive			Interrupt 15, for device(s): 15-edge ata_piix
16-fasteoi uhci_hcd:usb1, enp2s4	i16	derive			Interrupt 16, for device(s): 16-fasteoi uhci_hcd:usb1, enp2s4
18-fasteoi ata_piix	i18	derive			Interrupt 18, for device(s): 18-fasteoi ata_piix
19-fasteoi uhci_hcd:usb2	i19	derive			Interrupt 19, for device(s): 19-fasteoi uhci_hcd:usb2
23-fasteoi ehci_hcd:usb3	i23	derive			Interrupt 23, for device(s): 23-fasteoi ehci_hcd:usb3
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
Posted-interrupt wakeup event	iPIW	derive			Interrupt PIW, for device(s): Posted-interrupt wakeup event