On Mon, Sep 28, 2009 at 08:49:21AM +0200, Hans Petter Selasky wrote: > > > If the USB stack puts the new job into the schedule and the USB > > > controller does not pick it up, it is not an USB stack problem ... > > > > If so, any workarounds possible? > > None which I know about.
I've just found one. I noticed that USB controller here uses IRQ10 and shares it with NIC and FireWire. This system does not support IO-APIC. I've disabled ACPI and NIC has moved to another IRQ, USB and FireWire still share one IRQ but now there are no stalled transfers. I get stable 16.2 megabyte/s writing speed to USB HDD. Now I wonder if there is another way to assign distinct IRQ for USB, BIOS Setup does not help. Eugene Grosbein. _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "[email protected]"
