Re: [Discuss-gnuradio] Fft scope frequent hangs

[Ryan Seal]

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.
I have seen the same behavior using Gentoo 2006.1. This seems to be 
related to the number of points present in the plot window. I haven't 
looked into the guts of the program but would assume, based on the cpu 
usage, that the data points plotted do not take the pixel range into 
account ? For example, an array of 1000 points of time series data is 
plotted across 200 pixels (should plot every fifth point).

--Ryan
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