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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
floppy	i6	derive			Interrupt 6, for device(s): floppy
rtc	i8	derive			Interrupt 8, for device(s): rtc
acpi	i9	derive			Interrupt 9, for device(s): acpi
virtio4	i10	derive			Interrupt 10, for device(s): virtio4
uhci_hcd:usb1	i11	derive			Interrupt 11, for device(s): uhci_hcd:usb1
i8042	i12	derive			Interrupt 12, for device(s): i8042
ide1	i15	derive			Interrupt 15, for device(s): ide1
virtio1-virtqueues	i50	derive			Interrupt 50, for device(s): virtio1-virtqueues
virtio2-config	i177	derive			Interrupt 177, for device(s): virtio2-config
virtio2-requests	i185	derive			Interrupt 185, for device(s): virtio2-requests
virtio3-config	i193	derive			Interrupt 193, for device(s): virtio3-config
virtio3-requests	i201	derive			Interrupt 201, for device(s): virtio3-requests
virtio0-config	i209	derive			Interrupt 209, for device(s): virtio0-config
virtio0-input	i217	derive			Interrupt 217, for device(s): virtio0-input
virtio0-output	i225	derive			Interrupt 225, for device(s): virtio0-output
virtio1-config	i233	derive			Interrupt 233, for device(s): virtio1-config
NMI	iNMI	derive			Nonmaskable interrupt. Either 0 or quite high. If it's normaly 0 then just one NMI will often mark some hardware failure.
LOC	iLOC	derive			Local (pr. CPU core) APIC timer interrupt. Until 2.6.21 normaly 250 or 1000 pr second. On modern 'tickless' kernels it more or less reflects how busy the machine is.
ERR	iERR	derive
MIS	iMIS	derive