[MPlayer-users] XV performance with PCI graphics

[Alexander Roalter]

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This probably (or most certainly) doesn't really belong here, but maybe
someone can point me in the right direction.

I recently upgraded my system to a dual screen (2 LCDs via DVI) and my
normal CRT TV Set (via HDMI) setup. One LCD and the TV set are cloned
with TwinView from a PCIe-Graphics card (Nvidia 8600), while the other
LCD is connected via DVI from a NVidia 6200 over the PCI bus (no PCIe).

Playing a bigger video (~1280x720) on the PCI card's screen, I get
40-70% cpu load on the X process, while the cpu load is barely
measurable on the PCIe card.

It has nothing to do with 8600 over 6200, since before this setup I used
a 6200 on the PCIe, and it also worked flawlessly (meaning almost no cpu
usage at all).

If I remove the PCIe card and work with the PCI card alone, the same
thing happens: major load on the X process (so it isn't necessary a
dual-screen problem).

playing a smaller video (but still making it full screen later) works
fine and produces also only a small cpu load. If i move the video around
from one screen to the other, the same happens: PCIe-Screen: almost no X
load, PCI-Screen: 24 or more % cpu load.

Has someone any Idea what could be done against this, I mean on the PCI
bus I should be able to move 130MB/s, and a 1280x720 video @24fps
produces less than it. Some sort of PCI busmaster issue I presume?


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Cheers,
Alex
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