[mythtv-users] Performance problem

[Raphael Pooser]

Jonas Björklund wrote:
> Hello,
>
> I have a RS482-IL motherbord and a AMD Turion MT-34.
> The motherbord has a ATI Radeon Xpress 200 built in.
> I have Hauppauge bt848. Samsung Spinpoint 250GB harddisk.
>
> I have only tried live TV and get performance problem. Every 2 seconds I 
> get a lag on the picture. :-(
>
> Is my system to slow? CPU? Capture card? Harddisk?
>
>
>   

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.
Raphael