xhci: number of interrupts

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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


[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux