I have a problem with my debian system on my Asus K8N board, which is nForce3 250 based:whenever i plug in a USB2.0-enabled storage device (in my case recently a 1GB Creative Muvo TX SE), the kernel recognizes it as USB-2.0
device, the ehci_hcd module gets loaded, usbview and all other sources
Dear Marcus,
could you send also the lines in /var/log/messages related to the
hardware detection of the usb storage and to the device associated to it?
Something similar to:
...
May 11 09:25:49 xxx kernel: usb 4-1.1: new high speed USB device using
ehci_hcd and address 5
May 11 09:25:49 xxx
I could send dmesg-output, but I just -err- fixed the problem:I found out that the loss of speed is due to the sync option for mount.I didn't think of mount options at first, but after I tried to format the stick with more obscure file system, the speed went up.
So I examined the mount options,
The problem is, that without sync, unplugging an un- umounted device is
datacide. umounting the device after transferring 700 MB takes about 24sec,
what seems to be long.
You can manually run sync to flush stuff out to disk.
The long delay you're seeing on unmount is because copying
Thanks!Calling sync automated every 2 seconds (using watch) only slightly decreased performance, while speeding up the umount process extremely, and giving the feeling that the worst case scenario of an usb storage device being unplugged in the middle of a file transition loses a lot of its
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