[mythtv-users] Dual SW card usage on XP2200

Nelson Butterworth red_five at charter.net
Sat Nov 29 16:00:14 EST 2003


On Sat November 29 2003 12:59 pm, John Freer wrote:
> Hi all:
>
> I've got an XP2200 box that I've been really happy with with myth.  2
> SW Hauppauge cards, btaudio.  Everything works fine, but I'm getting
> choppy playback when recording two streams and playing back one.
>
> top shows that I'm in general 10% free CPU, but it spikes to 100%
> every few seconds or so.
>
> The box is also my firewall box for NAT, etc., so I think that other
> services are occasionally pulling CPU power and causing the skipping.
>
> Could someone post some suggestions on the best things to try first,
> second, etc.?  I could just go in and re-nice stuff, but I don't know
> if that's the best course.
>
> I've also tried reducing the encoding rates, and am using RTJPEG,
> etc.  That seems to reduce average CPU, but doesn't address the
> spikes that cause the choppyness.
>
> What's the best route to optomize my setup?  (Outside of getting a
> PVR250 or XP3000).
>
> Thanks,
> John.
>
>
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I would suggest rather strongly that you not try to play back anything on a 
system that's recording 2, UNLESS you were using PVR-x50s. Especially since 
the machine in question is also running a firewall and possible file shares. 
Build a new machine if possible and move all your myth-related stuff to it, 
and let your firewall remain your firewall.

Nelson Butterworth



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