Hi,
FWIW, I re-ran the same test using the USRP2 and the UHD drivers, on a
vmware virtual machine running on my iMac quad-core, running Ubuntu-10.04
64-bit with gnuradio-3.4.0.
I was able to get 20Msps (decimation factor of 5) with the USRP2, and the FFT
plot GUI was responsive at a refresh rate of 30fps.
If I tried to run it at 25Msps (decimation factor of 4), I got an over-run,
with a bunch of Os displayed on the GRC output console.
The only thing still wrong with using a virtual machine is the audio sink.
I get still audio under-runs aUaU, and choppy FM reception when it runs on a
virtual machine with gnuradio-3.4.0.
On a dedicated low-powered system like my T42p laptop, the audio sink works
fine.
Elvis Dowson
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