[mythtv-users] fps drops with DRM sync and bob

[Hamish Moffatt]

On Sat, Jun 09, 2007 at 10:30:30AM -0400, Doug Larrick wrote:
> Hamish Moffatt wrote:
> > I've just noticed that when using bob and the problem is occuring, the X
> > server process is using 100% of CPU. mythfrontend is using ~15% (on the
> > other core). I suspect this is highly relevant!
> >
> I think you may be on to something there :-)
> 
> If you were to install & use oprofile (including the relevant kernel
> module) I think it would show the culprit.
> 
> Relevant versions on my system:
> xserver-xorg-core 2:1.3.0.0.dfsg-6
> xserver-xorg-video-intel 2:2.0.0-3
> libdrm2 2.3.0-4
> libgl1-mesa-dri 6.5.3-1

I have identical versions now, with no improvement. (Just upgraded mesa.)

> The 965G does not have video overlay hardware and instead uses OpenGL
> textured video; if you can find a driver option for this on your
> hardware it may be worth trying.

xvinfo reports:

mythtv at moocher:~$ xvinfo -display :0 | grep Adapt
  Adaptor #0: "Intel(R) Textured Video"
  Adaptor #1: "Intel(R) Video Overlay"

and mythfrontend reports that it is using the textured video adapter. 

2007-06-08 19:48:31.380 VideoOutputXv: Pixel dimensions: Screen 1280x720, window 1280x720
2007-06-08 19:48:31.382 VideoOutputXv: Estimated display dimensions: 338x190 mm  Aspect: 1.77895
2007-06-08 19:48:31.382 VideoOutputXv: Estimated window dimensions: 338x190 mm  Aspect: 1.77895
2007-06-08 19:48:31.384 VideoOutputXv: XvMCTex: Init failed
2007-06-08 19:48:31.384 VideoOutputXv: @ j=3 Looking for flag[s]: XvInputMask XvImageMask 
2007-06-08 19:48:31.384 VideoOutputXv: Adaptor#0: Intel(R) Textured Video has flag[s]: XvInputMask XvImageMask 
2007-06-08 19:48:31.384 VideoOutputXv: Grabbed xv port 73
2007-06-08 19:48:31.384 VideoOutputXv: XVideo surface found on port 73
2007-06-08 19:48:31.385 VideoOutputXv: XVideo Adaptor Name: 'Intel(R) Textured Video'
2007-06-08 19:48:31.385 VideoOutputXv: XVideo Format #0 is 'YUY2'
2007-06-08 19:48:31.385 VideoOutputXv: XVideo Format #1 is 'YV12'
2007-06-08 19:48:31.385 VideoOutputXv: XVideo Format #2 is 'I420'
2007-06-08 19:48:31.385 VideoOutputXv: XVideo Format #3 is 'UYVY'
2007-06-08 19:48:31.385 VideoOutputXv: Using XVideo Format 'I420'
2007-06-08 19:48:31.385 VideoOutputXv: CreateShmImages(32): video_dim: 720x576
2007-06-08 19:48:31.424 VideoOutputXv: 0,0,0 is the only bad color key for MythTV, using 1 instead.

Is it possible to override this? Is it even worth trying?

Thanks for your configuration file. Most of the things I didn't have
seem to be defaults now anyway. I thought the AccelMethod EXA looked
promising but I didn't see any change.

I notice you are running 32-bit while I am running 64-bit. It shouldn't
be relevant and it's not really something I can try readily. This makes
it harder to compare the kernel configuration files but I'll try later.

thanks,
Hamish
-- 
Hamish Moffatt VK3SB <hamish at debian.org> <hamish at cloud.net.au>