[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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