<html> <head> <meta content="text/html; charset=UTF-8" http-equiv="Content-Type"> </head> <body text="#000000" bgcolor="#FFFFFF"> <div class="moz-cite-prefix">On 11/19/2013 04:42 PM, Olivier Crête wrote: </div> <blockquote cite="mid:1384875767.2052.19.camel@TesterBox.lan" type="cite"> <pre wrap="">Hi, On Tue, 2013-11-19 at 09:22 +0000, Ikaheimonen, JP wrote: </pre> <blockquote type="cite"> <pre wrap="">I would be interested in seeing LTTng UST tracing in the GStreamer code. </pre> </blockquote> <pre wrap=""> Someone has already done it: <a class="moz-txt-link-freetext" href="https://github.com/alexander-barabash/gstreamer-lttng/commits/0.10">https://github.com/alexander-barabash/gstreamer-lttng/commits/0.10</a> That said, I think we'd like something more generic. Someone (I think it was Stefan Sauer) recently proposed some cross-platform tracing infrastructure (purely user-space and GStreamer specific). We discussed having some way to re-use the same tracepoints with the different frameworks (lttng, dtrace, custom, etc). But I can't references to that discussion. </pre> </blockquote> The current state of what I am doing can be found here <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <a href="http://cgit.freedesktop.org/%7Eensonic/gstreamer/?h=tracer">http://cgit.freedesktop.org/~ensonic/gstreamer/?h=tracer</a> Feedback much welcome. I looked into babeltrace a bit (to output traces in the format LTTng uses). So far they don't have a lot of tools processing the traces :/ Right now I just log into the gst debug log, but thats one of the next things on the todo list to change. So what do I have right now: * tracepoints in the gst code base * 3 plugins that log trace data (log, stats, rusage) * one front-end to process trace data (gst-stats) Stefan </body> </html>