[vdr] Re: epia + VGA output

[Nicolas Huillard <nhuillard@ghs.fr>]

Thomas Glomann a écrit :
> On Tuesday 05 October 2004 20:07, Nicolas Huillard wrote:
>
> > Thomas Glomann a écrit :
> >
> > > epia-m 6000 (passive cooled cpu) together w/ a ff card works perfectly.
> > > Didn't try any of the soft plugins like but i think the 600 Mhz C3 is not
> > > fast
> > softdevice + DirectFB could do it (still a little tuning to do in the
> > plugin to get it smooth, but I get 40-50% CPU on my 1Ghz Nehemiah, so
> > 600Mhz should do it)
> If it's up to 50 % at 1 Ghz then it is probably 80-90% at 600 Mhz. hm. might 
> work but I wouldn't count on it. not much room for any other tasks. imagine 
> mp3 playback with live background. ssh sessions running in the 
It depends on what you plan to do. SSH is really cheap (CPU-wise). Don't 
underestimate the performance of current processors (I'm really 
disgusted by Intel P4 HT ads : "with HT 3GHz, you can now read your 
mails and surf the web at the same time !"... that was the same with 
PPro 200Mhz)
I ran many SSH + 1 IPSec tunnel + firewall + file server + SMTP mail 
relay + IMAP server + DHCP, NTP et al. on a 486DX2/66Mhz (passively 
cooled !!!), which did not show clear evidence of being underpowered. 
What made me change was the fact that OGG didn't play on that platform 
and the HDD was really too noisy. It is now a Cyrix P200+ @ 166Mhz with 
a huge heatsink and really low speed fan. The next limit is the BIOS 
limitation to 30GB HDD max.
When you really want to get the most out of available hardware, you can 
do it, and you can be impressed...

> background. ...  however, there are some howtos to get a 1 Ghz passively 
> cooled I think.
I put a Zalman NB47J (exact reference not verified) on top of the 
processor, removed the tiny fan, and put a 8cm low speed extractor fan 
on the chassis just on top of the heatsink. This is a fanless processor 
which appear to have an extractor just on top it it ;-)
This is still too noisy for me in an open environment : the top-position 
of the fan makes noise go up direct to the ear... Will certainly change 
when the box will be inside the stereo furniture. I tested the fan as an 
extractor or as an injector : when it extracts air, and thanks to holes 
at the other end of the box, just below the HDD, the HDD is also cooled.
See photos on http://www.huillard.net/vdr/photos/ (attention : images 
are still uploading / large 1MB images)

> > vdr-xine + Xv + XvMC is reported to work : 20-30% CPU @ 1Ghz.
> oh, it really works? but you would need X wouldn't you? I rather prefer the 
> softdevice + DFB solution with hardware decoding. I was following your posts 
> about that and it seemed that you didn't have any success so far.
I don't count on softdevice + hardware MPEG decoding, but still want 
hardware accelerated OSD transparency + video scaling / deinterlacing (I 
think that's easier than MPEG decoding).
Maybe you can revive softmpeg + hardware MPEG patches ?

--
NH