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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
2000b880.mailbox [1]	i17	derive			Interrupt 17, for device(s): 2000b880.mailbox [1]
VCHIQ doorbell [2]	i18	derive			Interrupt 18, for device(s): VCHIQ doorbell [2]
timer [35]	i27	derive			Interrupt 27, for device(s): timer [35]
vc4 [42]	i34	derive			Interrupt 34, for device(s): vc4 [42]
20004000.txp [43]	i35	derive			Interrupt 35, for device(s): 20004000.txp [43]
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]
vc4 hvs [65]	i57	derive			Interrupt 57, for device(s): vc4 hvs [65]
vc4 hdmi cec [72]	i64	derive			Interrupt 64, for device(s): vc4 hdmi cec [72]
vc4 crtc [74]	i66	derive			Interrupt 66, for device(s): vc4 crtc [74]
vc4 crtc [77]	i69	derive			Interrupt 69, for device(s): vc4 crtc [77]
vc4 crtc [78]	i70	derive			Interrupt 70, for device(s): vc4 crtc [78]
20804000.i2c, 20805000.i2c [85]	i77	derive			Interrupt 77, for device(s): 20804000.i2c, 20805000.i2c [85]
mmc0 [88]	i80	derive			Interrupt 80, for device(s): mmc0 [88]
uart-pl011 [89]	i81	derive			Interrupt 81, for device(s): uart-pl011 [89]
FIQ	iFIQ	derive
Err	iErr	derive