Yandex Monitoring metric reference

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Yandex Cloud

Updated at July 15, 2025

Histogram metrics
Function performance metrics
Function metrics
Trigger metrics
DB connection metrics

This section describes Cloud Functions metrics delivered to Monitoring.

The metric name goes into the name label.

All Cloud Functions metrics share the service=serverless-functions label.

Histogram metrics

Labels shared by all histogram metrics:

Label	Value
resource_id	Function ID
version_id	Function version ID

Metric name Type, unit	Description Labels
`duration_ms_histogram` `IGAUGE`, milliseconds	Distribution histogram for function execution time. This metric features the `bin` label containing histogram buckets.

Function performance metrics

Labels shared by all function performance metrics:

Label	Value
resource_id	Function ID
version_id	Function version ID
resource_type	Resource type. Always equals `function`.

Metric name Type, unit	Description
`functions_avg_duration` `DGAUGE`, milliseconds	Average function execution time
`functions_avg_init_duration` `DGAUGE`, milliseconds	Average function initialization time
`functions_avg_memory` `DGAUGE`, bytes	Average memory used by the function
`functions_avg_queue_duration` `DGAUGE`, milliseconds	Average function queue wait time
`functions_errors` `DGAUGE`, errors	Number of function execution errors
`functions_finished` `DGAUGE`, count	Number of completed function runs
`functions_inflight` `DGAUGE`, invocations	Number of concurrent function invocations
`functions_inits` `DGAUGE`, initializations	Number of function initializations
`functions_max_duration` `DGAUGE`, milliseconds	Maximum function execution time
`functions_max_init_duration` `DGAUGE`, milliseconds	Maximum function initialization time
`functions_max_memory` `DGAUGE`, bytes	Maximum memory used by the function
`functions_max_queue_duration` `DGAUGE`, milliseconds	Maximum function queue wait time
`functions_min_duration` `DGAUGE`, milliseconds	Minimum function execution time
`functions_min_init_duration` `DGAUGE`, milliseconds	Minimum function initialization time
`functions_min_memory` `DGAUGE`, bytes	Minimum memory used by the function
`functions_min_queue_duration` `DGAUGE`, milliseconds	Minimum function queue wait time
`functions_started` `DGAUGE`, count	Number of function runs
`functions_sum_duration` `DGAUGE`, milliseconds	Total function execution time
`functions_sum_init_duration` `DGAUGE`, milliseconds	Total function initialization time
`functions_sum_memory` `DGAUGE`, bytes	Total memory used by the function
`functions_sum_queue_duration` `DGAUGE`, milliseconds	Total function queue wait time
`functions_throttles` `DGAUGE`, count	Number of function invocation throttles

Function metrics

Labels shared by all function metrics:

Label	Value
function	Function ID
version	Function version ID

Metric name Type, unit	Description Labels
`serverless.functions.errors_per_second` `DGAUGE`, errors per second	Function invocation error rate
`serverless.functions.execution_time_milliseconds` `IGAUGE`, invocations per millisecond	Histogram of function invocation rate distribution by request processing time. Processing time buckets for the request are stored in the `bin` label.
`serverless.functions.finished_per_second` `DGAUGE`, invocations per second	Function invocation completion rate
`serverless.functions.inflight` `DGAUGE`, invocations	Number of concurrent function invocations
`serverless.functions.initializations_per_second` `DGAUGE`, initializations per second	New function instance initialization rate
`serverless.functions.started_per_second` `DGAUGE`, invocations per second	Function invocation rate
`serverless.functions.used_memory_bytes` `IGAUGE`, invocations per second	Histogram of function invocation rate distribution by memory usage in bytes. Memory usage intervals for the request are stored in the `bin` label.

Trigger metrics

Labels shared by all trigger metrics:

Label	Value
trigger	Trigger ID
type	Entity type.

Metric name Type, unit	Entity type.	Description Labels
`serverless.triggers.access_error_per_second` `DGAUGE`, errors per second	`request`: Function calls. `message_queue`: Accesses to Yandex Message Queue. `dlq`: Accesses the dead letter queue.	Rate of access errors when processing function invocations
`serverless.triggers.error_per_second` `DGAUGE`, errors per second	`request`: Function calls. `message_queue`: Accesses to Yandex Message Queue. `dlq`: Accesses the dead letter queue.	Function invocation error rate
`serverless.triggers.execution_time_milliseconds` `IGAUGE`, invocations per millisecond	`request`: Function calls.	Histogram of function invocation rate distribution by request processing time. Processing time buckets for the request are stored in the `bin` label.
`serverless.triggers.inflight` `DGAUGE`, invocations	`request`: Function calls.	Number of concurrent function invocations
`serverless.triggers.read_events_per_second` `DGAUGE`, units per second	`incoming`: Events causing any trigger to fire other than a trigger for Yandex Message Queue. `message_queue`: Events causing a trigger for Yandex Message Queue to fire.	Frequency of events causing a trigger to fire.

DB connection metrics

Labels shared by all DB connection metrics:

Label	Value
mdbproxy	DB connection ID

Metric name Type, unit	Description Labels
`serverless.mdbproxy.connections_inflight` `DGAUGE`, count	Number of concurrent active DB connections
`serverless.mdbproxy.query_execution_time_milliseconds` `IGAUGE`, units per millisecond	Distribution histogram for DB query execution. This metric features the `bin` label containing histogram buckets.

Yandex Monitoring metric reference

Histogram metricsHistogram metrics

Function performance metricsFunction performance metrics

Function metricsFunction metrics

Trigger metricsTrigger metrics

DB connection metricsDB connection metrics

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Histogram metrics

Function performance metrics

Function metrics

Trigger metrics

DB connection metrics