Hi, my qemu integrated pvUSB backend is now running stable enough to do some basic performance measurements. I've passed a memory-stick with about 90MB of data on it to a pv-domU. Then I read all the data on it with tar and looked how long this would take (elapsed time):
in dom0: 5.2s in domU with kernel backend: 6.1s in domU with qemu backend: 8.2s So the qemu backend is about 30% slower than the kernel backend. Is this acceptable? BTW: I managed not to have to copy the I/O-data in the backend, it is just mapped into user space and then given to the USB framework of qemu. I think it will be copied there, but changing this will require a lot of work... Juergen _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
