On 5/26/05, Jan Drugowitsch <[EMAIL PROTECTED]> wrote: > > I still don't see much of a reason why the drive should be so slow, > and neither why the kernel should use 100% cpu. > > Any help is appreciated, > Jan > > -- > [email protected] mailing list > >
The typical reason for low performance AND high CPU is that the controller (in this case probably the USB interface chip) isn't enabled for DMA. It looked like you have the right drivers loaded so possibly the USB chip is not a major brand name? Sorry I didn't read earlier parts of this thread. What chipset is this? lspci -v and supply back the data on the USB chips. The next idea is that you have both the ehci and uhci drivers loaded. If somehow you got the drive plugged into a USB 1.0/1.1 port then you'd only get about 1MB/S. Did you try all your ports? They are not all the same on my Compaq and I do get better performance from the USB 2.0 ports. Good luck, Mark -- [email protected] mailing list
