This is a cache of https://docs.openshift.com/container-platform/4.9/serverless/observability/developer-metrics/serverless-monitoring-services-default-metrics.html. It is a snapshot of the page at 2024-11-22T19:48:40.278+0000.
Default Knative <strong>service</strong> metrics - Observability | Serverless | OpenShift Container Platform 4.9
    OpenShift docs are moving and will soon only be available at docs.redhat.com, the home of all Red Hat product documentation. Explore the new docs experience today.
  1. Documentation
    2. history
×

Knative service metrics exposed by default

Table 1. Metrics exposed by default for each Knative service on port 9090
Metric name, unit, and type Description Metric tags

queue_requests_per_second

Metric unit: dimensionless

Metric type: gauge

Number of requests per second that hit the queue proxy.

Formula: stats.RequestCount / r.reportingPeriodSeconds

stats.RequestCount is calculated directly from the networking pkg stats for the given reporting duration.

destination_configuration="event-display", destination_namespace="pingsource1", destination_pod="event-display-00001-deployment-6b455479cb-75p6w", destination_revision="event-display-00001"

queue_proxied_operations_per_second

Metric unit: dimensionless

Metric type: gauge

Number of proxied requests per second.

Formula: stats.ProxiedRequestCount / r.reportingPeriodSeconds

stats.ProxiedRequestCount is calculated directly from the networking pkg stats for the given reporting duration.

queue_average_concurrent_requests

Metric unit: dimensionless

Metric type: gauge

Number of requests currently being handled by this pod.

Average concurrency is calculated at the networking pkg side as follows:

  • When a req change happens, the time delta between changes is calculated. Based on the result, the current concurrency number over delta is computed and added to the current computed concurrency. Additionally, a sum of the deltas is kept.

    Current concurrency over delta is computed as follows:

    global_concurrency × delta

  • Each time a reporting is done, the sum and current computed concurrency are reset.

  • When reporting the average concurrency the current computed concurrency is divided by the sum of deltas.

  • When a new request comes in, the global concurrency counter is increased. When a request is completed, the counter is decreased.

destination_configuration="event-display", destination_namespace="pingsource1", destination_pod="event-display-00001-deployment-6b455479cb-75p6w", destination_revision="event-display-00001"

queue_average_proxied_concurrent_requests

Metric unit: dimensionless

Metric type: gauge

Number of proxied requests currently being handled by this pod:

stats.AverageProxiedConcurrency

destination_configuration="event-display", destination_namespace="pingsource1", destination_pod="event-display-00001-deployment-6b455479cb-75p6w", destination_revision="event-display-00001"

process_uptime

Metric unit: seconds

Metric type: gauge

The number of seconds that the process has been up.

destination_configuration="event-display", destination_namespace="pingsource1", destination_pod="event-display-00001-deployment-6b455479cb-75p6w", destination_revision="event-display-00001"
Table 2. Metrics exposed by default for each Knative service on port 9091
Metric name, unit, and type Description Metric tags

request_count

Metric unit: dimensionless

Metric type: counter

The number of requests that are routed to queue-proxy.

configuration_name="event-display", container_name="queue-proxy", namespace_name="apiserversource1", pod_name="event-display-00001-deployment-658fd4f9cf-qcnr5", response_code="200", response_code_class="2xx", revision_name="event-display-00001", service_name="event-display"

request_latencies

Metric unit: milliseconds

Metric type: histogram

The response time in milliseconds.

configuration_name="event-display", container_name="queue-proxy", namespace_name="apiserversource1", pod_name="event-display-00001-deployment-658fd4f9cf-qcnr5", response_code="200", response_code_class="2xx", revision_name="event-display-00001", service_name="event-display"

app_request_count

Metric unit: dimensionless

Metric type: counter

The number of requests that are routed to user-container.

configuration_name="event-display", container_name="queue-proxy", namespace_name="apiserversource1", pod_name="event-display-00001-deployment-658fd4f9cf-qcnr5", response_code="200", response_code_class="2xx", revision_name="event-display-00001", service_name="event-display"

app_request_latencies

Metric unit: milliseconds

Metric type: histogram

The response time in milliseconds.

configuration_name="event-display", container_name="queue-proxy", namespace_name="apiserversource1", pod_name="event-display-00001-deployment-658fd4f9cf-qcnr5", response_code="200", response_code_class="2xx", revision_name="event-display-00001", service_name="event-display"

queue_depth

Metric unit: dimensionless

Metric type: gauge

The current number of items in the serving and waiting queue, or not reported if unlimited concurrency. breaker.inFlight is used.

configuration_name="event-display", container_name="queue-proxy", namespace_name="apiserversource1", pod_name="event-display-00001-deployment-658fd4f9cf-qcnr5", response_code="200", response_code_class="2xx", revision_name="event-display-00001", service_name="event-display"