[mythtv-users] AMD guide to building a Media PC

[Tom Greer]

dm1000 at gmail wrote:
>
> My frontend is a Sempron 3400, 512Mb 533Mhz ram in single channel on the
> Asus M2NPV-VM board w/ onboard Nvidia 6150 graphics. Using Mythdora 3.2
> w/ I believe the Nvidia-9629 drivers. I'm just outputting to an older
> SD analog tv at the moment. I'm seeing about 85-90% cpu from
> mythfrontend on HD content using kernel deinterlacing and StandardXvMC
> option. Bob deinterlacing pegs the cpu at 99-100%.
>
> I'm interested in learning if this kind of cpu usage is typical on this
> level of hardware given the current state of the nvidia drivers, xvmc
> etc or if I have something configured wrong and should be seeing lower
> numbers.
>
> Thanks.

I have a Sempron 2600+ with 1 GB of RAM driving an HDTV that runs
about 75% busy using Bob deinterlacing and *without* XVMC. If I turn
on XVMC my CPU load drops to about 30%.

So it appears that you should be able to improve the performance of
your existing hardware by tuning.

I found this page on the wiki to be very helpful:
http://www.mythtv.org/wiki/index.php/Optimizing_Performance.

Also, when I switched from the 8776 to the 9746 driver my CPU load
dropped from 95+% to about 75%.  YMMV.

Tom