Trying to understand the latency tracer

[Damian Vicino]

Thanks Nicolas,
Those latencies are reported in nanoseconds, right?

On Sat, May 25, 2019 at 6:39 PM Nicolas Dufresne <nicolas at ndufresne.ca>
wrote:

> Le vendredi 24 mai 2019 à 11:31 -0400, Damian Vicino a écrit :
> > Hi,
> > I found documentation on how to enable the GStreamer latency tracer
> exporting variables from the shell as follows:
> >
> > export GST_TRACERS=latency
> > export GST_DEBUG="GST_TRACER:7"
> >
> > As showed here
> https://gstreamer.freedesktop.org/documentation/design/tracing.html?gi-language=c#print-reported-latencies-for-each-element
> >
> > I got log lines as the following one:
> > 0:35:08.123456789     362   0x7f434c00fd40  TRACE           GST_TRACER
> :0:: latency, src=(string)nicesrc4_src, sink=(string)nicesink2_sink,
> time=(guint64)123456789, ts=(guint64)1234567890123
> >
> > I couldn't find documentation of that are the meaning of the different
> parts of that log line.
> >
> > Can someone point me to the right documentation or help me understand
> what I'm reading there?
>
> Per tracer documentation is a bit of a work in progress. Here's a quick
> guide:
>   src/sink: Name of the pad (this has been changed in newer GStreamer)
>   time: That's the actual amount of time it too to process one buffer
>   ts: That's when was this latency reported, should mostly match
>
> >
> > Best regards,
> > Damian
> >
> >
> > _______________________________________________
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> > gstreamer-devel at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
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