[mythtv-users] Fwd: Sempron 3100 lag when viewing HD from 6200 STB

[Steve Adeff]

On Tuesday 10 January 2006 00:22, Curtis Stanford wrote:
> On Jan 9, 2006, at 5:04 PM, Steve Adeff wrote:
> > On Monday 09 January 2006 17:31, Curtis Stanford wrote:
> >> On Jan 9, 2006, at 3:21 PM, Steve Adeff wrote:
> >>> On Monday 09 January 2006 16:58, Curtis Stanford wrote:
> >>>> On Jan 9, 2006, at 2:49 PM, Steve Adeff wrote:
> >>>>> On Monday 09 January 2006 16:35, Kevin Kuphal wrote:
> >>>>>> Adam Propeck wrote:
> >>>>>>> Here is some more detail. ( Xrog.conf and some hdparm info) I'm
> >>>>>>> wondering if livetv isn't playing well because of the specific
> >>>>>>> firewire port/driver? I'm using the single port that comes with
> >>>>>>> the
> >>>>>>> audigy 2 PCI card I'm using. Also, I guess I was wondering if I
> >>>>>>> need
> >>>>>>> to do anything specific with the fact that I'm using an Nforce 3
> >>>>>>> motherboard. Any tweaks that are recommended? Thanks, -Adam
> >>>>>>
> >>>>>> I think the problem is that fundamentally, the ATI driver does
> >>>>>> not
> >>>>>> provide hardware accelerated MPEG-2 playback and your Sempron
> >>>>>> cannot
> >>>>>> handle the software decoding without choking.  If you had an
> >>>>>> Nvidia card
> >>>>>> that supported XvMC you could enable that which would activate
> >>>>>> the
> >>>>>> hardware decoding and probably give you the performance you
> >>>>>> expect.
> >>>>>>
> >>>>>> Kevin
> >>>>>
> >>>>> I'm going to have to agree, unless someone else is running a
> >>>>> Sempron 3100 and
> >>>>> able to do live HDTV I'm going to have to think this is the
> >>>>> case. I
> >>>>> know my
> >>>>> Athlon64 3200+ has no room to spare playing live HD, I can easily
> >>>>> imagine a
> >>>>> Sempron of lower clock speed having more trouble.
> >>>>> LiveTV requires a bit more resources from mythbackend and
> >>>>> mythfrontend from
> >>>>> what I've noticed.
> >>>>>
> >>>>> --
> >>>>> Steve
> >>>>
> >>>> That seems like a lot of power! I'm decoding HD (live and recorded)
> >>>> on an old 2.4G Pentium4. Using the nvidia driver without XVMC I'm
> >>>> seeing about 50% CPU usage. An Athlon64 3200+ should kick my
> >>>> butt. Or
> >>>> is it an ATI problem??
> >>>>
> >>>> Curtis
> >>>
> >>> weird, I've got an nvidia card. I'm using top and showing that
> >>> mythfrontend+Xorg ~70-98% cpu usage for live and recorded 1080i
> >>> playback, it
> >>> could be that my output is 1280x720 since nvidia can't do
> >>> interlaced output
> >>> over DVI. Its much lower for 720p playback. I bet thats it,
> >>> resizing...
> >>>
> >>> --
> >>> Steve
> >>
> >> Yes, my TV only does 720p.
> >
> > strange, I don't know. what version nvidia driver? what xorg version?
> > maybe its that I'm running Debian64?
> >
> > any others with Athlon64 3x00+ care to chime in?
>
> I'm using xorg-6.8.2 and the latest nvidia driver. I'm playing a
> 1080i stream right now down converting to 1280x720 and getting 35%
> CPU usage. Kernel is 2.6.14.2 on a 2.4G P4.
>
> Curtis

hrm, I believe I have 6.9.0, I'll try and downgrade see if its Xorg.

-- 
Steve