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 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
