[mythtv-users] Zotac IONITX Performance
Phill Wiggin
alamar at gmail.com
Tue Sep 22 17:23:23 UTC 2009
On Tue, Sep 22, 2009 at 12:15 PM, Paul Raison <paul at raison.org.uk> wrote:
> I have noticed several postings of people using these boards as frontends.
> I am considering using one of these boards and not sure if a single core
> version will be upto what I need or if I need the dual core version, Is
> anyone using the single core version to playback HD material? I know the GPU
> is doing most of the work, but still wonder if single core is enough whilst
> playing HD material.
>
> Any thoughts greatly appreciated!
>
> Regards
>
> Paul Raison
>
It took me a little while to find this, it was an email I sent to MarcT
off-list.
I bought the ZOTAC IONITX-A-U Atom N330 dual-core. It's got 4Gig of RAM and
no hard-drive (I'm net-booting).
Here's the excerpt that includes some details.
At present, I'm still using the QT painter with .21, so YMMV.
I expect the 230 would be plenty of power. Honestly, I'd have probably
gotten one of those instead, but they were out of stock (and Newegg was
predicting over a week before they might get back in stock). I had a short
window to get it set up, so had to go with the more expensive model.
As far as numbers go, cat /proc/cpuinfo shows 4 'processors' (0-3). When
playing Two and a Half Men HD, top shows:
top - 01:12:19 up 5:04, 1 user, load average: 1.32, 1.08, 0.63
Tasks: 84 total, 1 running, 83 sleeping, 0 stopped, 0 zombie
Cpu(s): 31.7%us, 0.8%sy, 0.0%ni, 65.6%id, 0.1%wa, 0.4%hi, 1.4%si,
0.0%st
Mem: 3347068k total, 626036k used, 2721032k free, 0k buffers
Swap: 0k total, 0k used, 0k free, 279740k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
5240 mythtv 20 0 765m 375m 127m S 121 11.5 87:47.70 mythfrontend
5227 root 20 0 447m 116m 106m S 12 3.6 7:10.36 X
5536 root 20 0 18952 1344 1008 R 0 0.0 0:00.39 top
1 root 20 0 3812 612 520 S 0 0.0 0:00.72 init
2 root 15 -5 0 0 0 S 0 0.0 0:00.00 kthreadd
<snip>
So, about 30% total usage over 4 'processors'. which should translate to
about 60% of a single processor 230. (This is software decoding, mind you.)
Once you throw VDPAU into the mix, I have no doubt a 230 will work fine.
Hope that gives a little more detail,
--PhillW
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