Dear all: When I drag files from/to usb flash on my ubuntu, I can see there is a file operation dialog which tells me how fast it is right now. Like 20Mbytes/s,etc. How does ubuntu do that? Does ubuntu count the duration of sending bulk to receive completion interrupt? Or there is another tool or driver option in kernel to reach this? appreciate your help, miloody -- 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