I have a brand new (48 hour old) my cloud. I wanted to move about 100 Gb of largish video files from an NTFS disk with a USB 3.0 port.
I connected the disk to the back of the “my cloud”.
I logged in to the my cloud and tried copying with a “cp -r”. After 20 min, I stopped it and wondered if something was wrong. It had not finished many Gb.
I tried copying via a tar … | tar xf … This was not much better, but I had a look. Yes it was copying, just amazingly slowly.
I gave up, put the drive on a laptop and did the copying from a windows machine over the network via a cable.
I was done in 20 min.
Clearly, despite the network overhead and going via a windows graphical interface, it was more than an order of magnitude faster.
I looked on the “my cloud” and in /var/log/messages there are 1000’'s of lines like:
Sep 6 15:35:02 myname kernel: [12583.347053] xhci-hcd xhci-hcd: xHCI xhci_drop_endpoint called with disabled ep cfe5bb2c
Sep 6 15:35:13 myname kernel: [12594.249376] usb 2-1: reset SuperSpeed USB device number 2 using xhci-hcd
Sep 6 15:35:13 myname kernel: [12594.268970] xhci-hcd xhci-hcd: xHCI xhci_drop_endpoint called with disabled ep cfe5bb00
What does this mean and why is USB so slow on this device ?
Before anyone tells me, the firmware on the “my cloud” is the latest (4.something)
Many thanks for any comments or advice
