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Update tracing.md: Add examples of reported and per-element latencies

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Julian Bouzas 2019-03-21 11:25:38 +01:00
parent e8c2a6fd06
commit d4d88d372d
1 changed files with 27 additions and 2 deletions
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29
markdown/design/tracing.md
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@ -240,9 +240,9 @@ Frontends can:
## latency
- register to buffer and event flow
- register to buffer, event and query flow
- send custom event on buffer flow at source elements
- catch events on event transfer at sink elements
- catch events on event transfer at sink pads
## meminfo (not yet implemented)
@ -446,6 +446,31 @@ audiotestsrc num-buffers=10 ! audioconvert ! volume volume=0.7 ! \
autoaudiosink
```
### print processing latencies for each element
```
GST_DEBUG="GST_TRACER:7" GST_TRACERS=latency(flags=element) gst-launch-1.0 \
audiotestsrc num-buffers=10 ! audioconvert ! volume volume=0.7 ! \
autoaudiosink
```
### print reported latencies for each element
```
GST_DEBUG="GST_TRACER:7" GST_TRACERS=latency(flags=reported) gst-launch-1.0 \
audiotestsrc num-buffers=10 ! audioconvert ! volume volume=0.7 ! \
autoaudiosink
```
### print all type of latencies for a pipeline
```
GST_DEBUG="GST_TRACER:7" \
GST_TRACERS=latency(flags=pipeline+element+reported) gst-launch-1.0 \
alsasrc num-buffers=20 ! flacenc ! identity ! \
fakesink
```
### Raise a warning if a leak is detected
```