xvideo: high CPU usage on 1080i60 playback

7 Mar 2009

      Hi All,

I've continued doing some more testing on the r6xx_r7xx_branch.  Trying to 
play over the air 1080i60 mpeg2 video isn't working well for me in current 
snapshots, but if I go back about a month, things do work - and CPU usage is 
reasonable.  No problems playing lower res videos(640x480) though.  Output 
resolution is always 1920x1080 over HDMI.

Problems I've observed during playback of 1080i60 with git current on a 
HD3200:
- high CPU usage in Xorg process  - maxing out of 1 core of 2700Mhz AMD X2
- hdmi audio/video dropouts during video playback

Here's a sample of what I see with current git:

root@vcr3:/home/jape/xf86-video-radeonhd# git log                                                             
commit 6f201b626aa31548537a968c13f073a7a02911f3
Author: Alex Deucher 
Date:   Fri Feb 27 11:34:20 2009 -0500

top:
  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 6010 root      20   0  549m 236m 108m R   99  6.2   4:48.73 Xorg
 6872 jape      20   0  371m 228m 118m S   36  6.0   1:53.90 mythfrontend.re

Here's a sample of the same source material using a snapshot from a month ago 
that works well for me (just randomly chosen):

root@vcr3:/home/jape/xf86-video-radeonhd# git log                           
commit 6f3a51a9f9a9669009ff5ad3f49ba6c1141472c7
Author: Alex Deucher 
Date:   Mon Feb 2 16:08:00 2009 -0500

top:
 PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 5968 root      20   0  549m 235m 107m R   37  6.2   0:33.32 Xorg
 6872 jape      20   0  368m 226m 118m S   34  5.9   0:23.90 mythfrontend.re

Is there more info can I collect to help track this down?

jp

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JP Fournier

Yang Zhao

JP Fournier

Christian König

JP Fournier

JP Fournier

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