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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
arch_timer [0] i16 derive     Interrupt 16, for device(s): arch_timer [0]
arch_timer [1] i17 derive     Interrupt 17, for device(s): arch_timer [1]
arm-pmu [9] i21 derive     Interrupt 21, for device(s): arm-pmu [9]
3f00b880.mailbox [1] i23 derive     Interrupt 23, for device(s): 3f00b880.mailbox [1]
VCHIQ doorbell [2] i24 derive     Interrupt 24, for device(s): VCHIQ doorbell [2]
bcm2708_fb dma [48] i46 derive     Interrupt 46, for device(s): bcm2708_fb dma [48]
DMA IRQ [50] i48 derive     Interrupt 48, for device(s): DMA IRQ [50]
DMA IRQ [52] i50 derive     Interrupt 50, for device(s): DMA IRQ [52]
bcm2835-auxirq [61] i59 derive     Interrupt 59, for device(s): bcm2835-auxirq [61]
dwc_otg, dwc_otg_pcd, dwc_otg_hcd:usb1 [64] i62 derive     Interrupt 62, for device(s): dwc_otg, dwc_otg_pcd, dwc_otg_hcd:usb1 [64]
mmc0 [88] i86 derive     Interrupt 86, for device(s): mmc0 [88]
uart-pl011 [89] i87 derive     Interrupt 87, for device(s): uart-pl011 [89]
pps@4.-1 [4] i169 derive     Interrupt 169, for device(s): pps@4.-1 [4]
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