On Sun, Apr 12, 2009 at 02:53:42PM -0700, Yuri wrote: > Dan Nelson wrote: > > > > Increase your blocksize. dd's default is 512 bytes. Try bs=64k > > > > This works, I am getting 25-27 MB/s. Still lower than this device > supports (~50MB/s). > I guess because this VIA controller is very old.
Although the theoretical max speed of USB 2.0 is 60MB/s it is not actually possible to reach that speed. In practice the best transfer speed one can get over USB is 35-40 MB/s and most of the time not even that. Anything over 30MB/s with USB should be considered quite good, so the 25-27MB/s you are seeing are actually not all that bad. Some other controller *might* give you a few more MB/s but probably not more than that. -- <Insert your favourite quote here.> Erik Trulsson ertr1...@student.uu.se _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
