Do you know of a reliable way to do the same thing on Wwindows? On Mon, 17 Jan 2005, John H. wrote:
> I will post that later tonight. > > The speed, as I had mentioned before, in linux is more > like the speed with the device on my laptop, which is > 1.1. As far as specifically the mb/s, I will have to > post that tonight. > thanks > > > --- "Stephen J. Gowdy" <[EMAIL PROTECTED]> > wrote: > > > "nearly instant" and "BIG difference" do not convey > > any specific > > information. On linux you should do something like; > > > > time dd if=/dev/sda of=/tmp/bigFile bs=1M count=100 > > > > to get a speed measurement. Not sure what to do on > > XP. > > > > On Mon, 17 Jan 2005, John H. wrote: > > > > > err, what have I been supplying with the previous > > > pastes in emails? > > > > > > usbview says the device is 480mb/s, but it goes > > > nowhere near as fast as in windows. > > > > > > > > > --- "Stephen J. Gowdy" <[EMAIL PROTECTED]> > > > wrote: > > > > > > > Hi John, > > > > No one can really help when you supply no real > > > > informaion. > > > > > > > > regards, > > > > > > > > Stephen. > > > > > > > > On Mon, 17 Jan 2005, John H. wrote: > > > > > > > > > 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 | > > > > > > > > > > > > > > > > > > > > > > > > === message truncated === > > > > > > __________________________________ > Do you Yahoo!? > Yahoo! Mail - You care about security. So do we. > http://promotions.yahoo.com/new_mail > -- /------------------------------------+-------------------------\ |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
