It is very difficult to troubleshoot this performance problem without usb mon trace, so could you provide the trace result according to the guide in Documentation/usb/usbmon.txt or the link[1]?
[1], http://www.mjmwired.net/kernel/Documentation/usb/usbmon.txt thanks, -- Ming Lei -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1012280 Title: Transfer data to usb very slow. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1012280/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
