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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
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:usb3	i16	derive			Interrupt 16, for device(s): 16-fasteoi ehci_hcd:usb3
18-fasteoi i801_smbus	i18	derive			Interrupt 18, for device(s): 18-fasteoi i801_smbus
23-fasteoi ehci_hcd:usb4	i23	derive			Interrupt 23, for device(s): 23-fasteoi ehci_hcd:usb4
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
0-edge enp0s25	i28	derive			Interrupt 28, for device(s): 0-edge enp0s25
0-edge xhci_hcd	i29	derive			Interrupt 29, for device(s): 0-edge xhci_hcd
0-edge ahci[0000:00:1f.2]	i30	derive			Interrupt 30, for device(s): 0-edge ahci[0000:00:1f.2]
0-edge i915	i31	derive			Interrupt 31, for device(s): 0-edge i915
0-edge mei_me	i32	derive			Interrupt 32, for device(s): 0-edge mei_me
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