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Re: [Discuss-gnuradio] GRC's graphical sinks performance issues

From: Jack Ott
Subject: Re: [Discuss-gnuradio] GRC's graphical sinks performance issues
Date: Thu, 2 Sep 2010 10:24:15 -0700 (PDT)

Marcus D. Leech wrote:
> On 09/02/2010 11:39 AM, Matt Ettus wrote:
>> If you have unaccelerated OpenGL, then the OpenGL version will be
>> unacceptably slow.
>> Matt
> Any idea how you *tell* if your OpenGL is accelerated or not?  How does
> this relate to the Direct Rendering Manager
>   in the X server?
> Yes, the simplest way to tell is if I disable 3D acceleration through the
> "driconf" utility, after which glxgears becomes noticeably slower, it goes
> from displaying 60 vertically synched frames to 16. I also marked "DRI" in
> xorg.conf as "false", yet in either case I get the exact same performance
> from GRC. On another note I forgot to mention that I already had the fft's
> refresh rate at 10Hz instead of the default 30. I just don't understand
> why GRC is the only program not leveraging the graphics card.
> I also stumbled upon this
> http://gnuradio.org/redmine/wiki/gnuradio/CompGrWxgui#Enable-the-GL-Sinks
> It talks in the bottom of the page about the Intel G965 chipset, since I
> have the mobile version "GM965" I thought it might have something to do
> with this, but so far no luck.
> -- 
> Marcus Leech
> Principal Investigator
> Shirleys Bay Radio Astronomy Consortium
> http://www.sbrac.org
> _______________________________________________
> Discuss-gnuradio mailing list
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> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

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