Eric Blossom wrote:
On Fri, Nov 17, 2006 at 11:15:22AM -0500, Don Ward wrote:
I haven't been playing with the fft scope for a while until yesterday,
when I realized that it frequently hangs on my fc5 with two weeks ago
trunk gnuradio... The scope freezes (in all modes) and it needs to be
killed to get the control back. No underruns or any messgae that could
give a further investigation advice.
Has anyone experienced the same? Is there any suggestion that could help
diagnose the problem?
I find the scope will hang (on Windows with Cygwin or MinGW) if it (along
with anything else that is running) overloads the cpu. This is especially
likely in x:y mode.
-- Don W.
The problem doesn't appear to be platform specific. In general our
current plotting code is dog slow. It's mostly implemented in Python
and could use a serious overhaul.
There's an enhancement request, ticket:91, http://gnuradio.org/trac/ticket/91
that talks about improving the plotting peformance by coding up a
plotting widget in C++.
It's looking for an owner. Hint, Hint.
Eric
When you say C++, do you mean wxWidgets ? I had previously written both an
oscilloscope/spectrum analyzer using QT 3 (and Blitz,FFTW) that grabs data from
shared memory. If I could find some time I would be willing to help out with
the C++ part if someone could handle the Python part.
--Ryan
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