Re: [Discuss-gnuradio] Fft scope frequent hangs

[Ryan Seal]

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

> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>
>