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system_stats is a PostgreSQL extension that provides functions to access system level statistics that can be used for monitoring
This extension is OPTIONAL and should be considered solely when you decide to employ the Agentless approach for monitoring your PostgreSQL instances.
This will allow Datasentinel to directly fetch system statistics using PostgreSQL queries.


To be installed in the internal database named postgres
For additional details and installation instructions for this extension, please refer to
You need to grant the role monitor_system_stats to the monitoring user.
// example
GRANT monitor_system_stats to datasentinel;

Monitored metrics

  • System information
  • CPU load
  • CPU usage
  • Memory usage
  • Network usage
  • Swap usage
  • IOs statistics
  • File-systems usage