[Xen-users] Slow USB passthrough performance.

[Chris DiLorenzo <cdilorenzo@xxxxxxxxx>]

Hi,

I've successfully passed 2 different USB devices (one at a time) to a domU running Ubuntu 9.10.  Each time, the devices were extremely slow.  I passed through a USB hard drive.  The domU recognized the hard drive, but mounting it and bringing up a directory listing took minutes.  I then passed through a USB DVD-RW....basically an ATAPI DVD-RW in an USB enclosure.  Again, domU recognized the drive but when I tried to burn a DVD iso it just sat there.  The DVD-RW light came on occasionally but for the most part nothing seemed to happen.

I'm running XEN 3.4.1 with a Centos 5.3 dom0.  I'm not sure where to being looking.  Does USB passthrough support USB 2.0 speeds?  I'd really like to pass the USB DVD-RW through and eventually I want to pass a USB video encoder to a different domU.

Thanks,

Chris

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