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Jonathan Heizer wrote:
<blockquote cite="mid:48937BF2.7090406@gmail.com" type="cite">
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David Schlenk wrote:
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cite="mid:f0a171430808011351g431566bfp391071b08f281414@mail.gmail.com"
type="cite">
<pre wrap="">On Fri, Aug 1, 2008 at 2:42 PM, Jonathan Heizer <a
moz-do-not-send="true" class="moz-txt-link-rfc2396E"
href="mailto:jheizer@gmail.com"><jheizer@gmail.com></a> wrote:
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<pre wrap="">Ok, I have a wimpy machine as a frontend using a 1.6Ghz Athlon XP and a
GF6200 outputting to a 1080p TV, but currently only trying 720p. I am
playing HD QAM recordings out the DVI to HDMI input and optical to a
receiver.
Even when outputting at 1080p the little machine will usually works just
fine, but 1/10 times the cpu usage of mythfrontend will sky rocket. Even
after resetting Xorrg it will not work, but usually a reboot clears it up.
Sad part is because of using a CF to IDE adapter and DMA issues, a reboot
takes ~5 miutes for the kernel to be happy with no DMA and boot up. After
that things are snappy. During these cpu spikes the video will still play
fine, but the audio gets all jumpy. I have to have XvMC set up right
because this box would not be able to output 720p or 1080i to 1080p with out
it I wouldn't think.
Frontend Log on skipping playing a 720p @ 720p
2008-07-31 21:33:26.549 New DB connection, total: 3
2008-07-31 21:33:26.608 Connected to database 'mythconverg' at host:
10.0.0.197
2008-07-31 21:33:26.693 TV: Attempting to change from None to
WatchingPreRecorded
2008-07-31 21:33:27.129 AFD: Opened codec 0x878c180, id(MPEG2VIDEO_XVMC)
type(Video)
2008-07-31 21:33:27.129 AFD: codec AC3 has 6 channels
2008-07-31 21:33:27.130 AFD: Opened codec 0x873d4d0, id(AC3) type(Audio)
2008-07-31 21:33:27.173 Opening audio device 'default'. ch 6(2) sr 48000
2008-07-31 21:33:27.173 Opening ALSA audio device 'default'.
2008-07-31 21:33:27.185 Opening audio device 'default'. ch 2(2) sr 48000
2008-07-31 21:33:27.185 Opening ALSA audio device 'default'.
2008-07-31 21:33:27.400 AFD: Opened codec 0x874b5d0, id(MPEG2VIDEO)
type(Video)
2008-07-31 21:33:27.400 AFD: codec AC3 has 6 channels
2008-07-31 21:33:27.402 AFD: Opened codec 0x8742b70, id(AC3) type(Audio)
2008-07-31 21:33:30.104 VideoOutputXv: XvMC Adaptor Name: 'NV17 Video
Texture'
2008-07-31 21:33:30.150 Unable to parse themeinfo.xml for glass-wide
2008-07-31 21:33:30.150 The theme (glass-wide) is missing a themeinfo.xml
file
2008-07-31 21:33:30.150 OSD Theme Dimensions W: 640 H: 480
2008-07-31 21:33:30.597 NVP: Prebuffer wait timed out 10 times.
2008-07-31 21:33:31.353 NVP: Prebuffer wait timed out 10 times.
2008-07-31 21:33:31.364 TV: Changing from None to WatchingPreRecorded
2008-07-31 21:33:31.367 Realtime priority would require SUID as root.
2008-07-31 21:33:31.382 Failed to approve 'onefield' deinterlacer
2008-07-31 21:33:31.382 Couldn't load deinterlace filter
2008-07-31 21:33:31.482 Video timing method: USleep with busy wait
2008-07-31 21:33:32.087 WriteAudio: buffer underrun
2008-07-31 21:33:32.502 WriteAudio: buffer underrun
Linux mythtvlivingroom 2.6.23-chw-4 #1 SMP PREEMPT Mon May 26 14:44:56 PDT
2008 i686 GNU/Linux
Please include all output in bug reports.
MythTV Version : 17686M
MythTV Branch : branches/release-0-21-fixes
Library API : 0.21.20080304-1
Network Protocol : 40
Options compiled in:
linux release using_oss using_alsa using_arts using_jack using_backend
using_dbox2 using_directfb using_dvb using_firewire using_frontend
using_hdhomerun using_iptv using_ivtv using_joystick_menu using_libfftw3
using_lirc using_opengl_vsync using_opengl_video using_v4l using_x11
using_xrandr using_xv using_xvmc using_xvmcw using_xvmc_vld
using_bindings_perl using_bindings_python using_opengl using_ffmpeg_threads
using_libavc_5_3 using_live
Thanks!
Jon
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</pre>
</blockquote>
<pre wrap=""><!---->
Almost sounds like a heat issue or something more hardware related if
its a periodic thing. Do you have adequate cooling for the video card?
I don't know much about how XvMC works but I believe its an assistive
type thing so the CPU is still somewhat involved... if a heat issue
caused the video card to slow itself down it started erroring out a
lot or something like that it would put more load on the CPU.
Also, are you continuing to use the CF card after boot? Do you load
the OS into a ramdisk from the CF card or are you treating it like a
hard drive? (You'll probably burn through the CF card's writing
abilities pretty quickly with log files alone.) Also you mentioned
DMA problems - that could impact the ability to move content around
the bus so maybe its triggering some kind of race condition. I'd ditch
the CF card (for awhile anyway) and/or resolve your DMA issues to see
if that helped.
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</pre>
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Ha and that is why these messages can never have too much info. I use
to run the log files to a ram drive, but after I recently updated to
Knoppmyth 5.5 I have been having problems getting the ram drive to init
correctly. So for the last few weeks everything has been hitting the
cf card directly. I guess I need to knock my head against that problem
some more this weekend.<br>
<br>
Thanks<br>
</blockquote>
I have the logs going to the ram disk again and I am still having
skipping problems. We watched a movie on tv and had it playing for a
few hours (SD) and later went to watch a 1080i recording. At that
point it was skipping like crazy with 95%+ cpu usage. After a quick
reboot it was playing great for the next hour using 55% cpu or so. <br>
<br>
The video card is a fanless 6200 and nvclock reports it at 59C after
playing back 1080i for an hour and is still running at the same speeds
as when it started.<br>
<br>
Welp, any one have any tips?<br>
<br>
Jon<br>
<br>
<br>
<br>
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