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RE: [Discuss-gnuradio] Scope hangs
From: |
Walker, Robert CIV NSWC Crane, WC NAE Staff |
Subject: |
RE: [Discuss-gnuradio] Scope hangs |
Date: |
Mon, 19 Nov 2007 06:18:55 -0500 |
Don - Thanks for the info. I'm using 3.0.3 since I haven't yet seen
instructions for installing 3.1.1 on MingW on the website.
Rob
-----Original Message-----
From: Don Ward [mailto:address@hidden
Sent: Friday, November 16, 2007 16:08
To: Walker, Robert CIV NSWC Crane, WC NAE Staff;
address@hidden
Subject: Re: [Discuss-gnuradio] Scope hangs
"Walker, Robert CIV NSWC Crane, WC NAE Staff"
wrote:<address@hidden>
> I tried Tommi Rouvali's mod to audio_fft.py with the throttle added as
> suggested by Johnathan Corgan but my CPU usage still went to 100% and
> the fft window locked up. This is on a MingW/Windows XP system with a
> 1.8GHz Pentium M with 512MB RAM.
>
> As a further experiment, I added an audio.sink instead of the throttle
> and I got the tone as well as a working FFT display and CPU usage
> dropped to 13-15%.
>
> I then tried running fftsink.py since it has throttle statements in
> the standalone test app at the end and once again the window locked up
> with 100% CPU usage after displaying the first of the two fft screens
> in that app. After some experimenting, I changed both gr.sig_source
> statements to audio.source and got rid of the throttles and everything
> worked fine with CPU usage around 35-50%.
>
> It appears the throttles aren't working the way I think they are
> supposed to. Any advice?
What version of GNU Radio are you using? In version 3.0 (and earlier)
gr.throttle did not work on MinGW (see ticket 103 in gnuradio.org/trac).
It should be ok in version 3.1 and in the latest trunk.
-- Don W.