[mythtv-users] Re: HDTV, Myth, HD-2000, HD-3000,
questions galore (and hopefully answers from the smart people... )
Paul Leppert
phlepper at gmail.com
Fri Jan 28 00:46:08 EST 2005
Ok, I just updated my CPU from an Athlon XP 2000+ to an 3200+ and have
some questions about performance with HDTV.
First, my mythtv specs:
Athlon XP 3200+ with 512Mb RAM, nVidia FX 6600, Nforce onboard LAN, SB
Audigy 2 sound card, HD-3000 and PVR-250. /proc/cpuinfo confirms the
3200+ setting and a bogomips of 4341.76. I installed mythtv with
Jarod's instructions using kernel 2.6.10 and pcHDTV v1.6. I'm using
ALSA, /dev/dsp, KDE, and a resolution of 1024x768 (output to a VGA
monitor).
When watching livetv on ABC (HD 720p), I end up with 0% idle using top
72% cpu usage for mythfrontend
18% cpu for mythbackend
6% for X
1% for lirc_dev
<1% for top and others
When watching livetv on NBC (HD 1080i), I end up with 0% idle using top
82% cpu usage for mythfrontend
9% cpu for mythbackend
7% for X
1% for lirc_dev
<1% for the rest
When watching recorded Fox (no recording), I end up with 10% idle using top
56% cpu usage for mythfrontend
24% for mythbackend
5% for X
1% for lirc_dev
<1% for the rest
When watching recorded NBC (no recording), I end up with 0% idle using top
85% cpu usage for mythfrontend
10% for X
2% for mythbackend
1% for lirc_dev
<1% for the rest
These numbers seem much worse than what I've read from other people
online. What are others seeing with HDTV? Should I be getting better
performance from a 3200+? Is there something else I should be looking
at to improve?
Thanks,
phlepper
> However, right now, all stations use the same format 24/7. So if
> you are watching ABC or Fox, it's 720p. If you are watching CBS or
> NBC or UPN or WB it's 1080i.
>
--
I hear and I forget. I see and I remember. I do and I understand. -- Confucius
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