[mythtv-users] Unexplainable high CPU while watching MPEG2 with NVidia TV-out

Adam Felson a.f.6 at pobox.com
Thu Jan 6 09:15:20 EST 2005


On Thu, 2005-01-06 at 10:17 +0100, Thomas Börkel wrote:
> HI!
> 
> Adam Felson wrote:
> > How about reducing the resolution?  Unless you have HDTV, a normal TV
> > has only 525x525 resolution. Running at 640x480 will reduce the load
> > 25%.
> 
> I can try that, but the thing is, another computer with P-III/866 had no 
> problems with the same resolution.
A PIII would definitely have to have some kind of hardware assist.  I at
one point played around with a 500mhz pIII and was getting less than 10 
frames/second before I got the fb working on the matrox g200 card I was
using.


> 
> > Do you have either glx or fb support for your video card?
> 
> How can I tell?
> 
xdpyinfo


> Isn't it too much that X uses 40% CPU while playing on a Celeron 1.3 
> GHz? I think, X used only a few percent on my P-III/866 back then.

yes.  I think it's doing XV framebuffer scalling in software.



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