[Mplayer-users] Too slow playback, how to estimate

[Arpi]

Hi,

> Ok, I did exactly that and I get:
> BENCHMARKs: V:  140.827s VO: 0.000s  A: 0.000s Sys: 62.919s = 203.746s
> BENCHMARK%: V: 69.1190% VO: 0.000% A: 0.0000% Sys: 30.8810% = 100.0000%

It says: video decoding eats 69.1% of your CPU in average.
So there left 30% for video outout and audio decoding. Audio is
only a few % (1-5%), but I think the 25-30% which left won't be
enough for video output. I've about 50% CPU usage (cel2-1GHz) for DVD
files, without MTRR. With MTRR and using YV12-capable driver (mga_vid)
it's 8%.

CPU speed is enough, but you need
- MTRR support (cpu upgrade or kernel upgrade - depending on cpu really has
mtrr?)
- better video card, with YV12 (Xvideo) support

If your vga card can't accept YV12 frames, then conversion to RGB will eat
additional ~5% cpu, and will double video bandwith usage.
(12 bit -> 24/32 bit)

> So, what does that tell about the 400MHz Crusoe? The picture quality itself 
> looks really good, just a bit slow. I'll be damned if that sluggishness 
> comes just because of missing mtrr...:(
mtrr requires, it's a big speed boost.


A'rpi / Astral & ESP-team

--
mailto:arpi at thot.banki.hu
http://esp-team.scene.hu

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