[mythtv-users] Performance problem

[Raphael Pooser]

Jonathan Rogers wrote:
> Raphael Pooser wrote:
>   
>> I would put the problem at none of the above, and move it on to your 
>> graphics card.
>> At least when I first installed the drivers for my ATI card, it wasn't 
>> even using XV, causing it to eat up 60% of the processor just to watch a 
>> 640x480 stream, and with a software encoder taking about 40% to capture 
>> it, I was getting pauses exactly like the ones you're getting.  After 
>> making sure I had XV working, I got around 5% to watch a stream by 
>> itself, and closer to 50% to watch something live or watch and record at 
>> the same time.
>> So I would give your graphics card driver a look.  Are you using fglrx?  
>> If so, make sure your vendor string for OGL reads ATI and not mesa, or 
>> XV won't be working either.
>> I've heard that XV works perfectly when using "ati" in X, but I don't 
>> think "ati" supports the xpress 200, not 100% sure.
>> Also, "ati" won't let you use TV out.
>>     
>
> Xvideo and OpenGL are separate features, so checking the OpenGL status
> doesn't really help for video. If you want to check if Xv is working,
> simply run the "xvinfo" utility. If Xv is working, it'll show details of
> the video overlay; if not, it'll say there is no overlay.
>
> Jonathan Rogers

Of course they're not related, but with fglrx if you don't have ATI 
openGL binaries working then the driver isn't properly installed and xv 
will not work either.  This is true if you're using fglrx.  So an easy 
way to check if the module is properly installed and getting loaded is 
to check the vendor string for OGL.  Are you using an ATI card with 
fglrx by any chance?
Raphael