[mythtv] frontend hang info
danielk at cuymedia.net
Thu Dec 13 18:11:48 UTC 2007
On Wed, 2007-12-12 at 21:33 -0500, Scott D. Davilla wrote:
> I've been slowly tracking a frontend hang with XvMC enabled (mfe and
> mbe are at svn 14938) on a resource limited x86 platform. My next
> step was to profile (via opcontrol) a hang to try and see where each
> thread was waiting.
> First observation was that --compile-type=profile does not seem to
> work anymore in that the routine symbols are not present. Has the
> preferred method of profiling changed? If so what is the preferred
It should still work.
> So I change to --compile-type=debug. That got me symbols and the
> second observation -- the frontend does not hang anymore. Normally it
> will hang after a few hours of continuous LiveTV display of 1080i HD
> content. So far, it's been running over 12 hours without hang and a
> second problem of random vnidia green screen corruption is also gone.
> Since these two problems also occur in mplayer, it seems to point to
> some issue with ffmpeg as both mythtv and mplayer use ffmpeg. Does
> anyone have any clues to help me track this down.
The best way I've found to figure out a hang is to run the application
under gdb and hit Ctrl-C once it's in the hang. Then look at which
threads are active and what they are waiting on.
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