Re: [Discuss-gnuradio] Fft scope frequent hangs

[Eric Blossom]

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