this morning i copied ~50mb from the usb 2.0 thumbdrive in XP, it was nearly instant, a BIG speed difference from linux, despite being listed as 480mb/s
--- "Stephen J. Gowdy" <[EMAIL PROTECTED]> wrote: > 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 > __________________________________ Do you Yahoo!? Yahoo! Mail - You care about security. So do we. http://promotions.yahoo.com/new_mail ------------------------------------------------------- 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
