Re: [Xen-users] USB2.0 in Windows7 GPLPV Guest

[Casey DeLorme <cdelorme@xxxxxxxxx>]

I just tested my own suggestion with no changes in USB 2.0 speeds, however I did verify much greater speeds when running USB 2.0 External on my USB 3.0 drive port.

If you visit your motherboard manufacturers web page, download their "INF" package, that contains the USB 2.0 drivers specific to your motherboards chipset.  You can select the controllers from device manager and manually point to the files, this way you only load those specific drivers.

Speed tests:

USB 3.0 to 3.0 sustained 90MB/sec.

USB 3.0 to USB 2.0 external sustained over 50MB/sec (forwards compatible USB 2.0?  Seems absurdly speedy).

USB 2.0 to USB 2.0 with default windows drivers sustained 13-15 MB/sec.  This speed remained the same with the Motherboards drivers, but the devices are now listed under the same name as Linux identifies them (by their chipset).

I hope this helps.

On Thu, Jul 5, 2012 at 8:57 PM, Matthias <matthias.kannenberg@xxxxxxxxxxxxxx> wrote:

Tried different things with usb3.0 and 2.0 controller and 3.0 and 2.0 devices:

2.0 device on 2.0 controller: usb1.1 speed (0.9MB/s)
2.0 device on 3.0 controller: usb1.1 speed (0.9MB/s)
3.0 device on 3.0 controller: usb3 speed (80-90MB/s)
3.0 device on 2.0 controller: usb1.1 speed (0.9MB/s)

(USB2 and USB3 Controller via pci-passthrough)
something i found especially interesting is that usb2 devices on usb3
ports show up under the normal usb2 host controller, not the 3.0-one..

@Casey: Could you test if you get massively slower speed with usb2
devices on a usb3 port?

Starting to think about getting me an USB3.0 Cardreader :/

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxx
http://lists.xen.org/xen-users

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxx
http://lists.xen.org/xen-users