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<p class="MsoNormal"><span lang="EN-US">Hello,<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">I would be interested in seeing LTTng UST tracing in the GStreamer code.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">That is, I’d like it if there were some LTTng tracepoint events emitted in certain key places in the GStreamer code, and the resulting trace data could be used for gathering information about latencies, throughput, pipeline
construction and other interesting things. I could compare the throughput over time against Linux kernel activities, for instance.<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">Using the tracepoints would require first building GStreamer with the proper options (to enable instrumentation) and then running the application within an LTTng tracing session to gather the data.<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">I can easily add the tracepoints myself and submit the relevant patches to the community. I would like to know, however, what is the general attitude towards this kind of tracing. What would be my chances of having such
a patch set accepted and committed in the code?<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">Thanks,<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">JP Ikaheimonen | SW Development Engineer </span>
<a href="http://go.mentor.com/sourceryanalyzer"><span lang="EN-US" style="color:blue">http://go.mentor.com/sourceryanalyzer</span></a><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Mentor Embedded(tm) | Nucleus(r) | Linux(r) | Android(tm) | Services | UI | Multi-OS<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Android is a trademark of Google Inc. Use of this trademark is subject to Google Permissions.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Linux is the registered trademark of Linus Torvalds in the U.S. and other countries.<o:p></o:p></span></p>
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