[Mplayer-advusers] Bug? Anomalous CPU usage when playing HDTV clips.

[Ivan Kalvatchev]

Hmm quite interesting.
My quess is that the you may have reached AGP limit.
Could you check your AGP tunning/speed?

Best Regards
   Ivan Kalvachev
  iive


--- John Stebbins <stebbins at jetheaddev.com> wrote:
> No joy on the users list, so I'm moving over here.  Hope someone has the
> expertise to track this down.
> 
> First let me say that I have verified that xv is working for output and
> have verified that X has minimal CPU utilization on more ordinary video
> clips.
> 
> I have some clips I generated using a pcHDTV card.  The capture
> resolution is 720p (1280x720 @ 60fps).  When playing these clips, CPU
> utilization by X server jumps to 55-60%!  mplayer cpu utilization hums
> along at about 35-40%.
> 
> Since I knew that more ordinary streams did not exhibit this problem, I
> decided to narrow the variables by re-encoding the stream at various
> resolutions and frame rates.  I eventually created a stream that I can
> demonstrate a 10x increase in CPU utilization (by the X server) by
> changing the playback frame rate by 30%.
> 
> e.g.
> test.avi is a re-encoding to 1024x576 @ 60fps
> 
> $ mplayer -nosound test.avi > /dev/null
> 
> Causes the X server to use 20% of the CPU
> 
> $ mplayer -fps 40 test.avi > /dev/null
> 
> Causes the X server to use 2% of the CPU
> 
> $ mplayer -fps 30 test.avi > /dev/null
> 
> Causes the X server to use 1.25% of the CPU
> Note that X server cpu usage runs from .5% to 1% when mplayer is NOT
> running.
> 
> This could well be an X server problem. But I wanted to report
> here because the behavior is so strange, I suspect the problem is some
> odd interaction between mplayer and X.
> 
> System is (laptop) Pentium-M 1.4Ghz with a Radeon Mobility M9.
> Note that I have run the same experiments on 2 other configurations with
> very similar results.
> 1. P4 2.6Ghz with Radeon 9200SE
> 2. P4 2.6Ghz with integrated Intel chipset (865G)
> 
> Anyone out there have any theories?
> Want me to run other tests?
> Want access to the test clip? Its 20M. I can upload it to 
> ftp://mplayerhq.hu/MPlayer/incoming/ if anyone would like to 
> see this firsthand.
> 
> MPlayer spam... (from P4 2.6, integrated Intel graphics)
> 
> MPlayer 1.0pre3-3.3.2 (C) 2000-2003 MPlayer Team
> 
> CPU: Intel Pentium 4/Xeon/Celeron Northwood 2594 MHz (Family: 8, Stepping: 9)
> Detected cache-line size is 64 bytes
> CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
> Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2
> 
> Reading config file /usr/local/etc/mplayer/mplayer.conf: No such file or directory
> Reading config file /home/jstebbins/.mplayer/config
> Reading /home/jstebbins/.mplayer/codecs.conf: Can't open '/home/jstebbins/.mplayer/codecs.conf':
> No such file or directory
> Reading /usr/local/etc/mplayer/codecs.conf: Can't open '/usr/local/etc/mplayer/codecs.conf': No
> such file or directory
> Using built-in default codecs.conf.
> font: can't open file: /home/jstebbins/.mplayer/font/font.desc
> Font /usr/local/share/mplayer/font/font.desc loaded successfully! (206 chars)
> Using Linux hardware RTC timing (1024Hz).
> Can't open input config file /home/jstebbins/.mplayer/input.conf: No such file or directory
> Can't open input config file /usr/local/etc/mplayer/input.conf: No such file or directory
> Falling back on default (hardcoded) input config
> 
> Playing test.1024.60fps.avi.
> AVI file format detected.
> AVI_NI: No audio stream found -> no sound.
> VIDEO:  [DIVX]  1024x576  24bpp  59.940 fps  3167.9 kbps (386.7 kbyte/s)
> Clip info:
>  Software: MEncoder 1.0pre3-3.3.2
> vo: X11 running at 1600x1200 with depth 16 and 16 bpp (":0.0" => local display)
> Disabling DPMS
> ==========================================================================
> Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
> Selected video codec: [ffodivx] vfm:ffmpeg (FFmpeg MPEG-4)
> ==========================================================================
> Audio: no sound
> Starting playback...
> VDec: vo config request - 1024 x 576 (preferred csp: Planar YV12)
> VDec: using Planar YV12 as output csp (no 0)
> Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
> VO: [xv] 1024x576 => 1024x576 Planar YV12 
> 
> 
> Successfully enabled DPMS
> 
> Exiting... (End of file)
> 
> 
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> Mplayer-advusers at mplayerhq.hu
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