5 Channel usage statistics

Tomasz Lemiech edited this page 2021-10-18 23:47:23 +02:00

RTLSDR-Airband can optionally produce channel utilization statistics. The following metrics are currently supported:

• activity counter (for each frequency) - indicate the amount of time the frequency has been busy. This is measured as the number of loops in the output thread during which the frequency was active.
• noise floor (for each frequency) - as displayed in the textual waterfalls.
• sample buffer overflow counter (for each device) - incremented every time the sample buffer of a particular was not drained quickly enough. Non-zero values may indicate insufficient CPU power.

Use stats_filepath global option to enable this feature:

stats_filepath = "/var/tmp/rtl_airband_stats.txt";

The file is updated (rewritten) every 15 seconds. The format is meant to be ingested by Prometheus and is described here.

• Overview
  • Supported Platforms
  • Features
• Installation
  • Local Build
  • Docker
• Configuration essentials
  • Grammar basics
  • General configuration file structure
  • Configuring devices
    • RTLSDR
    • MiriSDR
    • SoapySDR
  • Configuring channels
    • Multichannel mode
    • Scan mode
  • Configuring outputs
    • Icecast
    • PulseAudio
    • UDP audio stream
    • Audio file
    • Raw I/Q file
• Configuring optional features
  • Disabling configuration sections
  • Changing PID file location
  • Manual squelch setting
  • CTCSS
  • NFM deemphasis
  • Audio filters in MP3 outputs
  • Notch filter
  • Limiting channel bandwidth
  • Icecast metadata updates in scan mode
  • Logging activity of scanned frequencies
  • Channel usage statistics
  • Tweaking sampling rate and FFT size
  • Mixers
  • Multithreaded operation
• Running
  • Privileges
  • Running in Foreground
  • Running in Background
  • Logging
  • Starting at Boot
  • Docker
• Troubleshooting
• Configuring auxiliary software to work with RTLSDR-Airband
  • Setting up your own Icecast server
  • Configuring PulseAudio server