[Bug 733187] integrating the tracer branch

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=733187
  GStreamer | gstreamer (core) | 1.x

--- Comment #11 from Stefan Sauer (gstreamer, gtkdoc dev) <ensonic at sonicpulse.de> 2014-10-04 17:55:42 UTC ---
Thibault, I hope this did not came over as unfriendly - I am definitely
thankful for the discussions. Regarding the GstStructure use, I mostly use this
now as it is convenient (easy to emit the data and also easy to parse it). From
profiling one part of the performance issues can be fixed using quarks instead
of strings. The other part can probably fixed by using a
gst_structure_to_string() variant that takes a char buffer and skips the
GString object. As we log lots of record that follow the same template we can
probably add some api/helper to compute the size such a buffer would need.

Otherwise we can figure out some binary logging.

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