Michael Dickens wrote:
I would be quite curious about the CPU utilization of a Linux box -
along with the hardware specs to make the judgement relatively
correct. Even better would be to try an Intel Mac running both OSX
and Linux and compare the CPU utilization ... hmmm ... that would be
pretty cool so I'll look into it. - MLD
I don't know about usrp_wfm..., but my radio astronomy combined
spectral/continuum application consumes about 90% CPU
when looking at 4Mhz bandwidth, with FFTs of length 2048 and an
fft_rate of 12. This is on an FC5 box, with a single
Celeron D running at 2.4Ghz, 512M of memory. The fftsink window has
to run the FFTs in "sampled" mode in order
to get any kind of realtime response at all (that is, the FFT only
gets to look at partial data, rather than continuous data).
This reduces spectral sensitivity quite a bit, and I'm thinking of
revamping my application to reduce the total bandwidth
going into the spectral part, in order to improve sensitivity.
Continuum sensitivity needs as much bandwidth as possible,
though :-(
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