> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cognite.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Extractor metrics

> Performance metrics available from the WITSML extractor 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](https://prometheus.io). *Counter* starts at zero and increases during an extractor run.

| Name              | Type    | Purpose                                                                                                                     |
| ----------------- | ------- | --------------------------------------------------------------------------------------------------------------------------- |
| queue             | Gauge   | WITSML SOAP query queue size                                                                                                |
| etp\_queue        | Gauge   | WITSML ETP message queue size                                                                                               |
| request\_counter  | Counter | Number of SOAP requests made to the WITSML server                                                                           |
| object\_counter   | Counter | Number of SOAP objects fetched from the WITSML server                                                                       |
| active\_wellbores | Counter | Number of current active Wellbores in the WITSML server                                                                     |
| soap\_errors      | Gauge   | Number of failed SOAP related errors                                                                                        |
| etp\_errors       | Gauge   | Number of ETP related errors                                                                                                |
| cdf\_latency      | Gauge   | ETP message processing latency. Calculated from the moment the extractor receives an ETP message until ingestion to CDF CDF |
| total\_latency    | Gauge   | Total latency of an ETP message. Calculated from the source creation time until ingestion to CDF.                           |