[mythtv] [Announce] Playback Optimization Patch

Kevin Kuphal kuphal at dls.net
Wed Jan 11 15:09:04 UTC 2006


David Abrahams wrote:

>Kevin Kuphal <kuphal at dls.net> writes:
>
>  
>
>>David Abrahams wrote:
>>
>>    
>>
>>>Nigel Pearson <nigel at ind.tansu.com.au> writes:
>>>
>>> 
>>>
>>>      
>>>
>>>>>I notice that the performance of playback seems to be suboptimal.
>>>>>     
>>>>>
>>>>>          
>>>>>
>>>>	Indeed, but I don't think it far behind i386?
>>>>   
>>>>
>>>>        
>>>>
>>>No, that's exactly my point: it seems like it's probably too slow
>>>everywhere.  And as it turned out I made a 1-line fix that resulted in
>>>a major optimization.  Still not enough to make HDTV playback look
>>>good, but it's a start.
>>>
>>>The frontend was doing a terribly slow regexp creation/search sequence
>>>in TV::GetQueuedChanNum that was soaking 14.6% of the process' CPU
>>>cycles.
>>> 
>>>
>>>      
>>>
>>You should submit this to Trac so it can get looked at
>>    
>>
>
>Which is where, please?
>
>  
>
http://svn.mythtv.org

Kevin


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