Re: [Discuss-gnuradio] saturation with multi_fft.py

[Eric Blossom]

On Thu, Oct 11, 2007 at 08:16:24PM +0200, Martin Dvh wrote:
> address@hidden wrote:
> > I'm sure you are right about the gui taking the majority of the cycles,
> > but it's the real-time feedback that makes gnuradio so attractive.
> > Ideally one would beable to switch them on and off as needed during
> > operation of the program, which it is my understanding will be possible
> > with the implementation of mblocks.
> > 
> > As things stand now, is there a "refresh rate" control that I can
> > modify, so that the scope sinks use less cycles?
> Yes, you can set the following parameters.
> sink  param           default         less cycles     Function
> oscope        frame_decim     1               >1              keep one block 
> in every "frame_decim"
> fft   fft_rate        15.0            <15.0           refresh rate of 
> fft_display
> 
> so for less GUI cycles set frame_decim to 10 or even 100              
> set fft_rate to 5.0 or even 1.0
> 

> I wished that fft_rate was set to 5.0 default because allmost
> allways 15.0 is too much a load on my machines.

Martin, 

you can set the default in ~/.gnuradio/config.conf.

E.g.,


[wxgui]
fft_rate = 5       # fftsink and waterfallsink
frame_decim = 10   # scopesink


FYI, the full list of things you can set defaults on can be found by
looking in /usr/local/etc/gnuradio/conf.d

Eric