[mythtv-users] High-Definition Playback performance data

[Jarod Wilson]

On Monday 04 April 2005 08:57, John Kuhn wrote:
> is this using Xv or XvMC?

Xv in all cases. I plan to play with XvMC a bit later this week, now that I've 
recompiled against the nvidia 7174 XvMC libs...


> >I've lost track of the thread where I said something about trying a
> > GeForce 6200 in place of a GeForce 4 MX with an Athlon XP 1800 system, to
> > see if that would give any significant playback performance boost with
> > High Definition recordings. Well, the answer is no, not really, but a bit
> > of a cpu upgrade sure helped. Here's a quick summary of my findings today
> > (from memory though, wish I'd actually written it all down). In all
> > cases, I'm using libmpeg2 for decode.
> >
> >Athlon XP 1800 w/AGP GF4MX, 6629 nvidia driver:
> >
> >-Able to play back 720p, cpu around 85% used.
> >-Able to play back 1080i without a deint filter, cpu around 95% used.
> >-Stutter every second or two on 1080i with deint filter on, cpu completely
> >pegged.
> >
> >Athlon XP 1800 w/AGP GF4MX, 7174 nvidia driver:
> >-Able to play back 720p, cpu around 70% used.
> >-Able to play back 1080i without deint, cpu around 85% used.
> >-Stutter every few seconds on 1080i w/deint filter on, cpu pegged.
> >
> >Athlon XP 1800 w/AGP GeForce 6200, 7174 nvidia driver:
> >-Maybe slightly better, but no significant difference from the GF4MX.
> >
> >Athlon XP 2600 w/AGP GF4MX, 7174 nvidia driver:
> >-Able to play back 720p, can't remember cpu usage.
> >-Able to play back 1080i w/no deint, can't remember cpu usage.
> >-Able to play back 1080i w/kernel deint filter enabled, cpu usage
> > fluctuates between 80 and 95%.
> >
> >I've decided to stick with the 2600 and GF4MX, and my secondary Myth box
> > can now handle 1080i programming without a problem. I'll get the missing
> > cpu utilization numbers one of these days...

-- 
Jarod Wilson
jarod at wilsonet.com

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