Service metrics
- Queue proxy metrics

Service metrics

Every Knative Service has a proxy container that proxies the connections to the application container. A number of metrics are reported for the queue proxy performance.

Using the following metrics, you can measure if requests are queued at the proxy side (need for backpressure) and what is the actual delay in serving requests at the application side.

Queue proxy metrics

Requests endpoint.

Metric Name	Description	Type	Tags	Unit	Status
`revision_request_count`	The number of requests that are routed to queue-proxy	Counter	`configuration_name` `container_name` `namespace_name` `pod_name` `response_code` `response_code_class` `revision_name` `service_name`	Dimensionless	Stable
`revision_request_latencies`	The response time in millisecond	Histogram	`configuration_name` `container_name` `namespace_name` `pod_name` `response_code` `response_code_class` `revision_name` `service_name`	Milliseconds	Stable
`revision_app_request_count`	The number of requests that are routed to user-container	Counter	`configuration_name` `container_name` `namespace_name` `pod_name` `response_code` `response_code_class` `revision_name` `service_name`	Dimensionless	Stable
`revision_app_request_latencies`	The response time in millisecond	Histogram	`configuration_name` `namespace_name` `pod_name` `response_code` `response_code_class` `revision_name` `service_name`	Milliseconds	Stable
`revision_queue_depth`	The current number of items in the serving and waiting queue, or not reported if unlimited concurrency	Gauge	`configuration_name` `event-display` `container_name` `namespace_name` `pod_name` `response_code_class` `revision_name` `service_name`	Dimensionless	Stable