On Wed, 7 Feb 2007, Mark Glassberg wrote: > I ran "dd if=/dev/sdb of=/dev/null" and found that the drive is being > read at 9.5 Mb/sec. Sorry, you didn't get the device file data, I sent > it twice. Here it is: > > T: Bus=01 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#= 2 Spd=480 MxCh= 0
So it is going as fast as the bus supports --------------^ > D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 > P: Vendor=054c ProdID=0243 Rev= 1.00 > S: Manufacturer=Sony > S: Product=Storage Media > S: SerialNumber=1806100416128 > C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA > I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage > E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms > E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=31875us > > Hope this helps. Thanks again, > Mark > > On Wed, Feb 07, 2007 at 04:16:23PM -0500, Alan Stern wrote: >> On Wed, 7 Feb 2007, Mark Glassberg wrote: >> >>> Same problem: getting the drive to operate at the highest possible speed. >>> The syslog information seems to relate to the problem. It, together with >>> hub.c, seem to indicate the a default configuration is being set for the >>> drive. >> >> It's hard to tell what's really happening, since you posted those 2- or >> 3-line extracts from the system log without any surrounding context. >> >> For example, in your initial posting you mentioned that the "not running >> at top speed" appears when you shut down the computer. So for the two >> seconds it takes to shut down, the drive won't be running at its top >> speed. How is that a problem? You don't use it while shutting down >> anyway. >> >>> Questions: a) Is that what is happening? >> >> You mean, is "a default configuration is being set for the drive"? I >> should think so. If it wasn't, you wouldn't be able to use the drive at >> all. >> >>> b) If so, can I change >>> the choice of configuration? >> >> As I recall, in one of your messages there was a line saying that the >> device had only one configuration. So there's not really much of a >> choice; I don't see how you could usefully change it. >> >>> c) If so, how and where do I change the code >>> to maximize drive performance? >> >> It's hard to be certain, based on the tiny amount of information you have >> provided, but my best guess is that you don't have to do anything at all >> and the drive is already running at its maximum performance. If you want >> to find out for sure, see what's listed in /proc/bus/usb/devices. (You >> said before that you would post the contents of that file, but you never >> did.) >> >> Alan Stern >> > > ------------------------------------------------------------------------- > Using Tomcat but need to do more? Need to support web services, security? > Get stuff done quickly with pre-integrated technology to make your job easier. > Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > _______________________________________________ > Linux-usb-users@lists.sourceforge.net > To unsubscribe, use the last form field at: > https://lists.sourceforge.net/lists/listinfo/linux-usb-users > -- /------------------------------------+-------------------------\ |Stephen J. Gowdy, SLAC | CERN Office: 32-2-A22| |http://www.slac.stanford.edu/~gowdy/ | CH-1211 Geneva 23 | |http://calendar.yahoo.com/gowdy | Switzerland | |EMail: [EMAIL PROTECTED] | Tel: +41 22 767 5840 | \------------------------------------+-------------------------/ ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
