...

curl -s 'http://localhost:8081/?action=stat&groups=log_stats'

Logging statistics collection may increase CPU load if there are many media streams on the server. Therefore since build 5.2.1252 logging statistics collection is disabled by default, and may be enabled with the following parameter

log_metrics_stats=true

The following parameters are includedmeasured

-----Logger info-----
log_msg_per_sec=0.30
log_mbit_per_sec=0.00

...

The interval cannot be set less than 1 second, the default value will be used in such case.

Incoming stream statistics

Since build 5.2.1257 a certain incoming stream statistics can be collected

curl -s "http://localhost:8081/?action=stat&format=json&groups=transcoding_stats" | jq '.[].transcoding_video_full_info'

The statistics is available in JSON format only and includes the following parameters

{
  "test": {
    "codec": "H264",
    "queueSize": 0,
    "distributors": {
      ...
    },
    "minDeltaArrivalTime": 1,
    "maxDeltaArrivalTime": 62,
    ...,
    "streamDelay": 38
  }
}

• stream name
• codec - publishing codec
• queueSize - decoding queue size
• distributors - subscribers statistics
• minDeltaArrivalTime - a minimal time between two subsequent packets receiving, ms
• maxDeltaArrivalTime - a maximal time between two subsequent packets receiving, ms
• streamDelay - stream delay, ms

Packets receiving time statistics is collected on time interval set by the following parameter in milliseconds

media_processor_incoming_stat_window=30000