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
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Name:
tomcat.sessions
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Description: The number of active sessions.
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Unit:
sessions
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Instrument Type: DoubleValueCallback
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Name:
tomcat.errors
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Description: The number of errors encountered.
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Unit:
errors
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Labels:
proto_handler
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Instrument Type: LongCounterCallback
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Name:
tomcat.processing_time
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Description: The total processing time.
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Unit:
ms
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Labels:
proto_handler
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Instrument Type: LongCounterCallback
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Name:
tomcat.traffic
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Description: The number of bytes transmitted and received.
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Unit:
by
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Labels:
proto_handler
,direction
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Instrument Type: LongCounterCallback
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Name:
tomcat.threads
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Description: The number of threads.
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Unit:
threads
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Labels:
proto_handler
,state
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Instrument Type: LongValueCallback
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Name:
tomcat.max_time
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Description: Maximum time to process a request.
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Unit:
ms
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Labels:
proto_handler
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Instrument Type: longValueCallback
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Name:
tomcat.request_count
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Description: The total requests.
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Unit:
requests
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Labels:
proto_handler
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Instrument Type: LongCounterCallback