help with using GST_TRACER

[Stefan Sauer]

On 10/21/2016 12:36 PM, mariannasb wrote:
> Hi Stefan,
>
> Thanks for pointing me to the existing documentation during the conference
> :)
>
>>> From what I understand "latency" will tell me the time it takes for a
>>> buffer
>>> to traverse the whole pipeline: go from source to sink.
>>> I'm actually interested in the individual processing time of each element
>>> as
>>> well, is it possible to get this information?
>> gst-stats is showing those if you use stats+rsuage. Please note that the
>> cpu usage we show is not always correct. This is where we should merge
>> the existing tools. 
> Yes I run gst-stats after running a pipe with GST_TRACERS="stats;rusage" and
> that shows cpu usage and some buffer information.
> I'm not very interested in the cpu load, so for me it is not a problem if it
> isn't always right.
>
> What I really want is the latency information (the individual processing
> time of each element).
> And it think it could be nice if that could be parsed by gst-stats to show
> latency information like fx. the buffer size information is shown.
RIghtm we can add average processing time. At least for filter elements
(effects, converter, codecs). It is really tricky to get this right for
elements with multiple src/sink pads. I'll take a look.

Stefan
>
> The only thing I can get right now is the time from src element to sink
> element when setting GST_TRACERS=latency.
>
> I'm running 1.8.0 so I might not be up to date with new features.
>
> Is it possible to get the information I want at the moment or is there any
> interest/plan to add such functionality?
>
> Thanks
>
> Marianna
>
>
>
> --
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