DB extractor metrics

The DB extractor can send performance metrics for remote monitoring and debugging.

Prometheus metrics

This section contains the full list of available metrics from the extractor. For information on the different types of metrics, see the Prometheus documentation. In general, Counter starts at zero and increases during a run of the extractor, while Gauge may change freely.

Name	Type	Purpose
db_extractor_start_time	Gauge	The timestamp (seconds) of when the extractor last started.
db_extractor_finish_time	Gauge	The timestamp (seconds) of when the extractor last finished.
db_extractor_memory_bytes	Gauge	The memory usage of extractor in bytes.
db_extractor_cpu_percent		Total The CPU usage of the extractor (0 — 100). Notice that this value is summed across all threads, so the value might exceed 100.
db_extractor_num_threads	Gauge	The number of threads used by the extractor.
db_extractor_rows_fetched	Counter	The number of rows fetched from a database, labeled on each query.
db_extractor_rows_uploaded	Counter	The total number of rows successfully uploaded to CDF.
db_extractor_queries_run	Counter	The number of successful queries.
db_extractor_queries_failed	Counter	The number of failed queries.
db_extractor_connection_num	Counter	The number of concurrent database connections active. This is the number of active queries.
db_extractor_server_num	Counter	The number of databases specified in the configuration.
db_extractor_running	Counter	The state of the extractor as a numeric value. 1 indicates running and 0 indicates not running.
db_extractor_info		An information dictionary about the given extractor. This is the extractor's name and version.