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opentelemetry-java-contrib/jmx-metrics/docs/target-systems/tomcat.md

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Tomcat Metrics

The JMX Metric Gatherer provides built in Tomcat metric gathering capabilities. These metrics are sourced from: https://docs.oracle.com/cd/E11857_01/em.111/e10115/middleware_apache_tomcat.htm

Metrics

  • Name: tomcat.sessions

  • Description: The number of active sessions.

  • Unit: sessions

  • Instrument Type: DoubleValueCallback

  • Name: tomcat.errors

  • Description: The number of errors encountered.

  • Unit: errors

  • Labels: proto_handler

  • Instrument Type: LongCounterCallback

  • Name: tomcat.processing_time

  • Description: The total processing time.

  • Unit: ms

  • Labels: proto_handler

  • Instrument Type: LongCounterCallback

  • Name: tomcat.traffic

  • Description: The number of bytes transmitted and received.

  • Unit: by

  • Labels: proto_handler, direction

  • Instrument Type: LongCounterCallback

  • Name: tomcat.threads

  • Description: The number of threads.

  • Unit: threads

  • Labels: proto_handler, state

  • Instrument Type: LongValueCallback

  • Name: tomcat.max_time

  • Description: Maximum time to process a request.

  • Unit: ms

  • Labels: proto_handler

  • Instrument Type: longValueCallback

  • Name: tomcat.request_count

  • Description: The total requests.

  • Unit: requests

  • Labels: proto_handler

  • Instrument Type: LongCounterCallback