Hi all, I am trying to test the maximum USB bandwidth that can be allocated to a class of USB devices. I am looking forward to removing all other USB devices on my system, so that I am sure that the Host Controller doesn't reserve any bandwith to other devices. lsusb command outputs: Bus 005 Device 004: ID 05e1:0501 Syntek Semiconductor Co., Ltd WebCam, Chipset DC-1125 similar to 174f:a311 - Asus F2F, F2J, F3J, F3T, G1, Z53JA Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 002: ID 0b05:1712 ASUSTek Computer, Inc. BT-183 Bluetooth 2.0+EDR adapter Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 002: ID 046d:c019 Logitech, Inc. Optical Tilt Wheel Mouse Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub The mouse is easy to remove, but the other two devices are integrated to my notebook. I have searched the forums but could not find how to remove them from my system. I am also not sure if I do need to remove them, since they may not be reserved any bandwidth while they are not in use. The webcam on bus 5 is definely not in use, because I succesfully remove its driver(assuming it's driven by stkwebcam) from system. But even then it's still in lsusb list. But when I try to remove any bluetooth related drivers(ie. btusb), it gives the error "module in use". Also, lsmod |grep usb gives: btusb 11856 3 bluetooth 52740 11 sco,rfcomm,bnep,l2cap,btusb usbhid 24480 0 hid 42048 1 usbhid usbcore 159664 6 stkwebcam,btusb,usbhid,ehci_hcd,uhci_hcd Lastly, I observed the traffic at buses 3 and 5 with usbmon while communicating with my own devices on other buses, and generated output files for buses 3 and 5 were empty. Does that mean that no bandwidth was reserved for them by the HC, so that they don't interfere my USB tests? -My kernel version is 2.6.29, distro ubuntu ibex, and notebook model asus f3jc, USB HC: UHCI and EHCI. -- 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
