Sam Song <samlinuxppc at yahoo.com.cn> wrote: > Hi all, > > We met a USB performance problem on a custom > 8347board with 2.4.31. When copying small > files no more than 100MB in size, it worked > smoothly with NEC or VIA PCI card. But > copying a big file like more than 150MB > in size would decrease the copying > speed a lot. Serial console even couldn't > response 'ls' command. The target has a > 128MB DDR RAM.
Ummm, actually, 256MB DDR RAM. > While the same driver with 2.4.31 worked fine > on a 8248 custom board. What could the > problem be? Arhhhh, it was due to USB 1.1 limitation itself(8347 USB 2.0 driver wasn't added yet when I posted it). Only on the workable 8248 target with USB 1.1 driver, it would have such a phenomena. There was even a network error displayed. If working with USB 2.0, no any problem. New to me:-) But Well, I don't have the guts to say this is a kernel's bug:-) > Sorry to distrub you during Christmas Time. OK, stay on relax, pls. Best regards, Sam __________________________________________________ ??????????????? http://cn.mail.yahoo.com
