[mythtv-users] [slightly OT] HDTV cpu

Steve MacLaren scram69 at gmail.com
Sun Jul 22 05:36:18 UTC 2007


On 7/19/07, Patrick Ouellette <pat at flying-gecko.net> wrote:
>
> On Thu, Jul 19, 2007 at 09:04:39AM -0700, Steve MacLaren wrote:
> >
> > I'm currently running with the AMD Athlon 64 X2 3600+ for broadcast HDTV
> > playback.  Having the second core available for commflagging is nice as
> > during HD playback, Xorg keeps one core between 90 and 100%.
> >
> > Unfortunately there are too many boldface "?" on the wiki page to know
> for
> > sure if this is the performance one should expect for this CPU.  However
> the
> > strange thing is that I see no difference using XvMC or not.  I have an
> > Nvidia 6200 using the proprietary nvidia drivers (see the nvidia logo
> during
> > login).  So my results may not be "typical".
> >
>
> Do you have the xorg.conf option "UseEvents" set to true (if you are
> using an NVIDIA driver that supports this option?  I know on my single
> core system this cut CPU usage way down on HD playback.  I'm pondering
> upgrading to a dual core CPU so the data point would be nice.
>
> Pat
>
> Thanks for the tip!  I finally was able to give the "UseEvents" option a
try, and it makes a huge difference using XvMC in CPU usage, for both SD and
HD playback.  Haven't had a chance to test w/o XvMC yet, but will try that
as well.

Again thanks for filling me in on "UseEvents".  The Ubuntu how-to that I
used to set up and install the nvidia drivers made no mention of it...
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