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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
3f00b880.mailbox [1]	i17	derive			Interrupt 17, for device(s): 3f00b880.mailbox [1]
VCHIQ doorbell [2]	i18	derive			Interrupt 18, for device(s): VCHIQ doorbell [2]
bcm2708_fb DMA [48]	i40	derive			Interrupt 40, for device(s): bcm2708_fb DMA [48]
DMA IRQ [50]	i42	derive			Interrupt 42, for device(s): DMA IRQ [50]
DMA IRQ [52]	i44	derive			Interrupt 44, for device(s): DMA IRQ [52]
dwc_otg, dwc_otg_pcd, dwc_otg_hcd:usb1 [64]	i56	derive			Interrupt 56, for device(s): dwc_otg, dwc_otg_pcd, dwc_otg_hcd:usb1 [64]
mmc0 [88]	i80	derive			Interrupt 80, for device(s): mmc0 [88]
uart-pl011 [89]	i81	derive			Interrupt 81, for device(s): uart-pl011 [89]
mmc1 [94]	i86	derive			Interrupt 86, for device(s): mmc1 [94]
arch_timer [0]	i161	derive			Interrupt 161, for device(s): arch_timer [0]
arch_timer [1]	i162	derive			Interrupt 162, for device(s): arch_timer [1]
arm-pmu [9]	i165	derive			Interrupt 165, for device(s): arm-pmu [9]
usb-001:005:01 [17]	i166	derive			Interrupt 166, for device(s): usb-001:005:01 [17]
FIQ	iFIQ	derive
CPU wakeup interrupts	iIPI0	derive			Interrupt IPI0, for device(s): CPU wakeup interrupts
Timer broadcast interrupts	iIPI1	derive			Interrupt IPI1, for device(s): Timer broadcast interrupts
Rescheduling interrupts	iIPI2	derive			Interrupt IPI2, for device(s): Rescheduling interrupts
Function call interrupts	iIPI3	derive			Interrupt IPI3, for device(s): Function call interrupts
CPU stop interrupts	iIPI4	derive			Interrupt IPI4, for device(s): CPU stop interrupts
IRQ work interrupts	iIPI5	derive			Interrupt IPI5, for device(s): IRQ work interrupts
completion interrupts	iIPI6	derive			Interrupt IPI6, for device(s): completion interrupts
Err	iErr	derive