[Discuss-gnuradio] gnuradio land speed record?

[Clark Pope]

I'm curious what people do with the wideband capability of the gnuradio/usrp 
and what is the widest bandwidth signal one can really process with available 
computers? 

For reference I have a ~2.4 GHz core 2 duo laptop. For a 200 kHz FM demodulator 
I consume about 40% of one cpu. That's pretty much the simplest useful thing 
anyone can do so that maps to my laptop might be able to process 1 MHz 
bandwidth continuously. 
 
Similarly, my hard drive can't really keep up with 32 Mbyte/s recording. So if 
samples are 16-bit and you really can't afford lost data it seems like 
recording is limited to maybe 10 MHz or so bandwidth.
 
However, with gigabit Ethernet you can send 100 Mbyte/s or more. What's the 
most anyone has recorded or processed continuously? What level of compexity was 
the processing? 
 
Thanks,
Clark