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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	Warn	Crit	Info
timer	i0	derive			Interrupt 0, for device(s): timer
i8042	i1	derive			Interrupt 1, for device(s): i8042
rtc0	i8	derive			Interrupt 8, for device(s): rtc0
acpi	i9	derive			Interrupt 9, for device(s): acpi
i8042	i12	derive			Interrupt 12, for device(s): i8042
ata_piix, ata_piix	i17	derive			Interrupt 17, for device(s): ata_piix, ata_piix
ehci_hcd:usb2, uhci_hcd:usb3, uhci_hcd:usb6	i20	derive			Interrupt 20, for device(s): ehci_hcd:usb2, uhci_hcd:usb3, uhci_hcd:usb6
ipmi_si	i21	derive			Interrupt 21, for device(s): ipmi_si
22	i22	derive			Interrupt 22, for device(s): ehci_hcd:usb1, uhci_hcd:usb5, uhci_hcd:usb8, uhci_hcd:usb9, hpilo
uhci_hcd:usb4, uhci_hcd:usb7, radeon	i23	derive			Interrupt 23, for device(s): uhci_hcd:usb4, uhci_hcd:usb7, radeon
hpsa0-msix0	i27	derive			Interrupt 27, for device(s): hpsa0-msix0
hpsa0-msix1	i28	derive			Interrupt 28, for device(s): hpsa0-msix1
ens4f0	i30	derive			Interrupt 30, for device(s): ens4f0
ens4f1	i32	derive			Interrupt 32, for device(s): ens4f1
enp3s4f0	i33	derive			Interrupt 33, for device(s): enp3s4f0
enp3s4f1	i34	derive			Interrupt 34, for device(s): enp3s4f1
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