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

[Johannes Leupolz]

I had the same problem. I have got an old Nvidia TNT 1 with TV-Out. Now I use 
the riva-framebuffer driver of the kernel and the builtin nv-driver of X11. I 
added  "Load    "xv"" in my XF86Config-4. Now it works.


> HI!
>
> Using NVidia 6629 TV-out with XV for playback in mythfrontend, I get:
>
> - 1% CPU for mythfrontend
> - 40% CPU for X
>
> But total CPU is at 80%, causing prebuffering pause every now and then
> (and all the time, if I enable kernel deint in addition).
>
> Strange is, I can't see any other process with "top", that takes the
> rest of the CPU (the other 40%).
>
> Watching LiveTV without prebuffering pause is impossible, because that
> adds another 10% CPU, reaching total of over 90%.
>
> Recording with PVR-250, 720x576, 7000/8000 bps.
>
> Hardware: Celeron 1.3 GHz, 512 MB.
>
> Hard disk DMA is on.
>
> Fecora Core 2, Kernel 2.6.9, Myth 0.16.
>
> I was once using a P-III/866 in another machine, that had no problems
> with the same settings (resolution, bitrate), playing at 50% CPU total.
>
> Any hints?
>
> Thanks!
>
> Thomas
>
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