Can you actually say how fast it is? How did you test it in both OSes? On Sun, 16 Jan 2005, John H. wrote:
> modinfo ub > modinfo: could not find module ub > > It's as slow as it is in my usb 1.1 laptop. However, > in WINXP, it's WAY faster. > > > --- Alan Stern <[EMAIL PROTECTED]> wrote: > > > On Sun, 16 Jan 2005, Stephen J. Gowdy wrote: > > > > > On Sun, 16 Jan 2005, John H. wrote: > > > > > > > My usb 2.0 devices(SD card reader and usb thumb > > > > drive), while being listed w/usbview as 480mb/s, > > are > > > > going around 1.1 speed. > > > > > > > > ehci-hcd is loaded, what else could be the > > problem? > > > > > > They are just slow? What speed are you actually > > seeing. > > > > Stephen is right. You have to be careful when > > talking about things like > > this. If usbview lists a device as using 480 Mb/s > > then that's the speed > > it's using. Now maybe the _throughput_ is lower > > than you expect -- but > > that's a different matter. You can also see the > > speed in > > /proc/bus/usb/devices (or wherever you have the > > usbfs filesystem mounted). > > > > A decrease in speed could be caused by ub device > > driver. Are your devices > > bound to usb-storage or to ub? If they are using ub > > then you have to > > disable the ub driver in the kernel configuration. > > > > > > Also, I noticed on upgrade to fc3, /proc/bus/usb > > was > > > > no longer mounted, so I added it to fstab. > > > > > > > > Do I need to? Can I just have /sys/bus/usb, > > which is > > > > up by default? > > > > > > It isn't needed for normal operations I believe, > > but it is very useful to > > > find out what is going on. I've not actually > > looked in /sys/bus/usb, > > > perhaps it is very similar? > > > > It doesn't matter where the usbfs filesystem is > > mounted; it will still > > contain the same information. However there's > > probably a lot of programs > > that expect to find it under /proc/bus/usb, so it > > might be a good idea to > > keep it there. (Unless Fedora 3 deliberately has > > changed things so that > > the programs now expect to find it under > > /sys/bus/usb, but I don't think > > they have. The kernel's usbfs driver still creates > > the /proc/bus/usb > > directory.) > > > > Alan Stern > > > > > > > > > __________________________________ > Do you Yahoo!? > Yahoo! Mail - 250MB free storage. Do more. Manage less. > http://info.mail.yahoo.com/mail_250 > -- /------------------------------------+-------------------------\ |Stephen J. Gowdy | SLAC, MailStop 34, | |http://www.slac.stanford.edu/~gowdy/ | 2575 Sand Hill Road, | |http://calendar.yahoo.com/gowdy | Menlo Park CA 94025, USA | |EMail: [EMAIL PROTECTED] | Tel: +1 650 926 3144 | \------------------------------------+-------------------------/ ------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
