Hi Sarah, I was wondering why a USB2 device connected to a USB3 host controller causes much more interrupts then the same device on a USB2 controller. Probably because there isn't a seperate roothub handling the USB2 devices ? usb2 controller idle (no application grabbing video): 30 interrupts/second active (application grabbing video): 155 interrupts/second usb3 controller idle (no application grabbing video): 20 inter/second active (application grabbing video): 7830 inter/second These are measured both over 5 minute interval. Is there a way to ratelimit/reduce the interrupt rate (in case of usb2 devices) ? -- Sander -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html