Knative metrics

Cloud Monitoring supports the Knative metrics listed in this document.

  • For a general explanation of the entries in the tables, including information about values like DELTA and GAUGE, see Metric types.

    To chart or monitor metric types with values of type STRING, you must use Monitoring Query Language (MQL), and you must convert the value into a numeric value. For information about MQL string-conversion methods, see String.

  • For information about the units used in the metric lists, see the unit field in the MetricDescriptor reference.

  • For information about statements of the form “Sampled every x seconds” and “After sampling, data is not visible for up to y seconds”, see Additional information: metadata.

  • The resource-hierarchy level tells you if the metric is written at the project, organization, or folder level(s). When the level is not specified in the metric descriptor, the metric writes at the project level by default.

  • For information about the meaning of launch stages such as GA (General Availability) and BETA (Preview), see Product launch stages.

Knative metrics

Metrics from Knative.

The following list was last generated at 2025-10-31 03:26:04 UTC. For more information about this process, see About the lists.

knative

Metrics from Knative components. Launch stages of these metrics: BETA

The "metric type" strings in this table must be prefixed with knative.dev/. That prefix has been omitted from the entries in the table. When querying a label, use the metric.labels. prefix; for example, metric.labels.LABEL="VALUE".

Metric type Launch stage (Resource hierarchy levels)
Display name
Kind, Type, Unit
Monitored resources		 Description
Labels
serving/activator/request_count BETA  (project)
Activator Request Count
DELTA, INT64, 1
knative_revision 		The number of requests that are routed to the activator. Sampled every 60 seconds. After sampling, data is not visible for up to 180 seconds.
response_code_class: One of '1xx', '2xx', '3xx', '4xx', or '5xx' according to response code of the request. If any other code is returned, it should be reported as '5xx'.
response_code: (INT64) Response code of the request according to protocol.
num_tries: (INT64) The number of tries (retry on 503s only) it takes to get a response from a reserve revision.
serving/activator/request_latencies BETA  (project)
Activator Request Latencies
DELTA, DISTRIBUTION, ms
knative_revision 		Distribution of service request times in milliseconds for requests that go through the activator. Value is the total time requests spent in activator and revision pods. Sampled every 60 seconds. After sampling, data is not visible for up to 180 seconds.
response_code_class: One of '1xx', '2xx', '3xx', '4xx', or '5xx' according to response code of the request. If any other code is returned, it should be reported as '5xx'.
response_code: (INT64) Response code of the request according to protocol.
serving/autoscaler/actual_pods BETA  (project)
Actual Pod Count
GAUGE, INT64, 1
knative_revision 		Number of pods that are allocated currently. Sampled every 60 seconds.
serving/autoscaler/desired_pods BETA  (project)
Desired Pod Count
GAUGE, INT64, 1
knative_revision 		Number of pods autoscaler wants to allocate. Sampled every 60 seconds.
serving/autoscaler/panic_mode BETA  (project)
Panic Mode
GAUGE, INT64, 1
knative_revision 		Set to 1 if autoscaler is in panic mode for the revision, otherwise 0. Sampled every 60 seconds.
serving/autoscaler/panic_request_concurrency BETA  (project)
Observed Panic Concurrency
GAUGE, DOUBLE, 1
knative_revision 		Average requests concurrency observed per pod during the shorter panic autoscaling window. Sampled every 60 seconds.
serving/autoscaler/requested_pods BETA  (project)
Requested Pod Count
GAUGE, INT64, 1
knative_revision 		Number of pods autoscaler requested from Kubernetes. Sampled every 60 seconds.
serving/autoscaler/stable_request_concurrency BETA  (project)
Observed Stable Concurrency
GAUGE, DOUBLE, 1
knative_revision 		Average requests concurrency observed per pod during the stable autoscaling window. Sampled every 60 seconds.
serving/autoscaler/target_concurrency_per_pod BETA  (project)
Target Concurrency Per Pod
GAUGE, DOUBLE, 1
knative_revision 		The desired average requests concurrency per pod during the stable autoscaling window. Sampled every 60 seconds.
serving/revision/request_count BETA  (project)
Request Count
DELTA, INT64, 1
knative_revision 		The number of requests reaching the revision. Sampled every 60 seconds. After sampling, data is not visible for up to 180 seconds.
response_code_class: One of '1xx', '2xx', '3xx', '4xx', or '5xx' according to response code of the request. If any other code is returned, it should be reported as '5xx'.
response_code: (INT64) Response code of the request according to protocol.
serving/revision/request_latencies BETA  (project)
Request Latencies
DELTA, DISTRIBUTION, ms
knative_revision 		Distribution of service request times in milliseconds for requests reaching the revision. Value is the time requests spent in revision pods. Sampled every 60 seconds. After sampling, data is not visible for up to 180 seconds.
response_code_class: One of '1xx', '2xx', '3xx', '4xx', or '5xx' according to response code of the request. If any other code is returned, it should be reported as '5xx'.
response_code: (INT64) Response code of the request according to protocol.

Generated at 2025-10-31 03:26:04 UTC.