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

[Thomas Börkel]

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