[mythtv] EPIA M10k - XvMC: Very high CPU (even when paused!!)

Stuart Auchterlonie stuarta at squashedfrog.net
Thu Jan 18 09:57:43 UTC 2007


On Wed, Jan 17, 2007 at 11:38:26PM +0000, Colin Guthrie wrote:
> Terry Barnaby wrote:
> > Note that there was a bug in MythTv 0.20 that caused the OSD to be on 
> > for Interactive TV. This caused 70% + CPU usage. This was fixed in the 
> > CVS version. There is an earlier thread on this issue but I can remember 
> > the name ...
> 
> Yeah thanks for pointing this out but I generally always use the SVN
> version.
> 
> The bug (I've not 100% confirmed it yet) seems to be related to video
> previews before playing a recording. This seems to have a race condition
> that sometimes (usually?) prevents the full screen playback using XvMC
> VLD extensions and falls back to regular decoding which kills
> performance quite nicely!
> 
> Turning off video previews fixes things for now.
> 

Wonder if it related to the race i've seen once or twice
where multiple preview threads end up being created and that
hammers performance...

Stuart



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