Low perfomance when read from usb flash drive
Artyom Mirgorodsky
man at email.com.ua
Tue Mar 3 10:18:19 PST 2009
On Tuesday 03 March 2009 16:16:02 Hans Petter Selasky wrote:
> if (usb2_get_speed(xfer->xroot->udev) == USB_SPEED_HIGH) {
> qh_endp |= (EHCI_QH_SET_EPS(EHCI_QH_SPEED_HIGH) |
> EHCI_QH_DTC);
> if (methods != &ehci_device_intr_methods)
> qh_endp |= EHCI_QH_SET_NRL(8);
> } else {
>
> And tune to NRL value to 15. Recompile kernel and modules.
Nothing changed
dd if=/dev/da0 of=/dev/null bs=64k
5433+0 records in
5433+0 records out
356057088 bytes transferred in 27.286939 secs (13048627 bytes/sec)
More information about the freebsd-usb
mailing list