[mythtv-users] odd CPU usage

[Aran Cox]

I've seen this too... and it bugs me.  My system is fast enough to
record and playback another recording.  However, when watching LiveTV I
often get very jerky motion and top shows very little idle CPU time. 
However, recording and playing back another show uses 35% backend, 5-10%
frontend.   Sometimes I see it behave like this, other times LiveTV
works just fine.  I'm pretty aware of other background processes, and
I'm sure nothing else is causing this.  

Question: Does a single backend/frontend combo system always read the
data over the TCP socket?  Or does the frontend get the files straight
from the filesystem when possible?



On Wed, 2003-04-30 at 09:06, rosenbla at uchastings.edu wrote:
> The CPU usage by mythbackend seems odd to me: 
> When recording only, backend uses about 45% 
> When Watching a pre-recorded backend uses 0%, frontend about 5% 
> When watching live TV backend uses ~70% frontend about 4% 
>  
> So what seems odd to me is why the backend is using 25% more on livetv then 
> when it just records, if playing a recording seems to really only need frontend using 
> cpu?  
>  
> I have checked the default and livetv profiles and they are identical both on the 
> setup screen and in the mysql database. Does anyone else notice this?   
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