On Tue, 28 Nov 2006, Jon Senior wrote: > Apologies if this doesn't thread properly. I've not yet subscribed to > the list properly (Having issues with incoming emails!) so I'm copying > and pasteing from the archive! > > >You should get transfers a lot faster than that. Have you checked the > >system log for any sort of error messages? > > Yup. None there. Watching the log while connecting a device gives the > impression that it is connecting as a High speed device. No errors > reported. > > >And most importantly, are the drives mounted with the "-o sync" option? > >That slows everything down tremendously. > > No sync enabled. I actually tried enabling it and ended up with a read > speed slightly faster than without. These speeds are either way (I > think... I haven't actually got a benchmark to hand for the write speed > to one of the devices.). > > I did find this: > http://kerneltrap.org/node/6933#comment-202486 > To which I have posted. The OP seemed to have the same problem and > coincidentally had a Via chipset. I do wonder if there isn't some issue > with the chipset in terms of the Linux driver. Sadly, my experience of > Kernel hacking is small enough to be immeasureable so I'm not the best > person to start looking for problems in the source code. Sadly I don't > have any other hardware to test it with. It's hard to find someone who > will lend you a USB adaptor card so that you can test your unsupported > OS against it! ;-)
Try using the usbmon facility. Instructions are in the kernel source file Documentation/usb/usbmon.txt. Alan Stern ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
