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On 12/14/2011 10:29 AM, Zhao, Halley wrote:
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<p class="MsoNormal"><span lang="EN-US">Hi Experts:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">On a dual core platform,
my gst command line only use half CPU. How could I improve
recording performance by using more CPU?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Here is my command line:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">gst-launch-0.10 v4l2src
! video/x-raw-yuv,width=640,height=480,framerate=15/1
!ffmpegcolorspace ! tee name=t t. ! queue ! oggmux name=mux
! queue ! filesink location=test.ogv alsasrc device=“hw:0” !
queue ! audiorate ! audio/x-raw-int,rate=44100 !
audioconvert ! flacenc ! queue ! mux.</span></p>
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<br>
This already uses several threads to encode audio and video and
write the muxed stream. Imho the "<span lang="EN-US">tee name=t t. !
queue" in front of</span> oggmux is unused. Also I don't see any
video encoder in your pipeline. Using a multithreaded encoder coudl
help to better utilize the available copu cores (especially if the
encoder is heavy).<br>
<br>
Stefan<br>
<br>
<blockquote
cite="mid:5D8008F58939784290FAB48F549751984EC5F18494@shsmsx502.ccr.corp.intel.com"
type="cite">
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<p class="MsoNormal"><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">While latest cheese(use
camerabin) can utilize more CPU to achieve better
performance? What’s the difference?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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