This is a great achievement. I tested it with an old 2GHz P4 laptop
(but with good USB controller) and was able to reach about 41MB/sec. The
tests were with/without FPGA HB filter in one direction using your
USRP1 max transfer of 8 Msps in one direction should be from history
now. I hopes your patches applied to the trunk.
Thank you for sharing it with us.