[mythtv-users] Paid expert wanted for MythTV system

[Mircea Marghidanu]

Tom Lichti wrote:
> Brian Wood wrote:
>   
>> Mark Hutchinson wrote:
>>
>>   
>>     
>>> I am actually already using a PCI Creative Audigy card with the built  
>>> in disabled.
>>>     
>>>       
> Sort of along the sames line as the OP's problem, I noticed that my 
> system (dual core P4 3.2) playing OTA HD at 720p uses about 35-40% CPU 
> on one core and 10% on the other, but playing SD I get 99% usage on one 
> CPU and about 20% usage on the other. Very wacky. Playing SD I see a lot 
> of this in the log:
>
> 2008-02-10 17:46:56.937 AO: Broadcasting free space avail
> 2008-02-10 17:46:56.937 WriteAudio: Preparing 6144 bytes (1536 frames)
> 2008-02-10 17:46:56.937 AO: audio waiting for space on soundcard: have 
> 1536 need 6144
> 2008-02-10 17:46:56.952 NVP: A/V Divergence: -0.817329, Rate: 
> 0.00272733, Warpfactor: 0.99126, warpfacto
>
> However playback is fine, so I'm not too concerned about it, but it does 
> seem odd that SD is using more than double the CPU of HD. This is with 
> no XvMC for either SD or HD. I guess what I'm saying is that it does 
> seem like a sound problem.
>
> Tom
>
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can either of you try just for the hell of it to run on a single core? 
as in taskset -c 0 mythfrontend ?
Since most people ( including me sadly - with an AMD X2 be-2350 ) have 
issues playing HD, but never SD, it could look like it's either a 
threading issue or a context switching issue...  Don't know, it just 
seems odd that such fast CPUs are not able to play SD streams... it just 
has to be some sort of getting out sync due to the fact that either 
sound or video gets ahead...

Don't know... it's worth a try i guess.