On Thu, Jun 11, 2009 at 3:10 PM, Jarod Wilson<ja...@wilsonet.com> wrote: > On Jun 11, 2009, at 1:39 PM, Tom Buskey wrote: > Typically, no. USB sucks horribly for disk I/O.
Mostly depends on what your talking about. And the quality of the USB disk/host controller. >> USB 2.0 is 480 mbits/s which is probably close to 48 MB/s. >> 45 MB/s on gigabit ethernet isn't too bad. > (480 Megabit/second) * (1 Megabyte/8 Megabit) = 60 MB/s. But in > practice, you'll rarely see much better than about 30MB/s, because all > bus arbitration is done by the host cpu, which is grossly inefficient. > FireWire or (even better) eSATA blows USB out of the water for > external disk I/O performance. True enough. :-D But popping in a USB disk to test it works pretty well. And in reality, when I've used it, I've used compact flash cards, plugged into a PCI express card. -- -- Thomas _______________________________________________ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
