On Sun, Dec 27, 2009 at 12:10 PM, Paul Hartman <paul.hartman+gen...@gmail.com> wrote: > On Sun, Dec 27, 2009 at 12:01 AM, Michael Holmes > <holmesm...@googlemail.com> wrote: >> 2009/12/27 Paul Hartman <paul.hartman+gen...@gmail.com>: >>> On Sat, Dec 26, 2009 at 7:00 PM, Hung Dang <hungp...@gmail.com> wrote: >>>> On 12/26/09 15:54, Paul Hartman wrote: >>>>> Hi, >>>>> >>>>> I got a Nokia N900 linux internet tablet/phone a few days ago, and >>>>> when I connect it in USB Mass Storage mode to a Windows Vista computer >>>>> I can write at 17MB/sec, but when I connect it to my Gentoo box my >>>>> writes are really slow, between 500-900kb/sec depending on if I mount >>>>> in "sync" mode or not. As far as I know it should be just a totally >>>>> standard/generic mass storage device. (there were no drivers or >>>>> software install needed in windows, it just worked) >>>>> >>>>> Other USB devices plugged into the same port go full speed, and AFAIK >>>>> everything appears as if it should be high speed USB 2.0. Has anyone >>>>> seen something like this before? I'm not sure what the deal is. It >>>>> takes 20 minutes to copy 1 gigabyte from Linux and takes just under 1 >>>>> minute to do the same in Windows. >>>>> >>>>> I'm not sure about debugging USB or what the options are. Everything >>>>> I've used previously has worked without any hassle. >>>> Have you received a lot of debugging messages at the output of dmesg >>>> when copying files? >>>> >>>> Hung >>> >>> No errors, no strange messages at all, it seems normal (only slow). I >>> have other USB devices like SD card reader, external HDD, and they >>> perform at full speed when plugged into the same port, so it's weird >>> to me. >>> >>> Thanks >>> Paul >>> >>> >> >> This isn't that helpful, but in Windows I get good thoroughputs in >> mass storage mode, but compartively weak ones in sync mode. But this >> shouldn't be the problem because as far as I know, there are no >> ync-mode drivers for good old Linux (which is ironic if you consider >> it). > > When I said "sync" mode I mean mounting the device in mass storage > mode with with "-o sync" (as opposed to the default cached/async > mode), which I believe is the default in Windows Vista & Win7 (because > most windows users cannot be bothered to unmount before pulling the > plug). > > Thanks
Well, after a bit more plugging/unplugging of all my USB devices into various ports in different orders, it seems to be going fast now. I hate USB :) Thanks for the help
