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AWS Lambda metrics and dimensions for Splunk Observability Cloud 🔗

The Splunk Lambda Extension of the Splunk OpenTelemetry Lambda Layer collects high-resolution, low-latency metrics each time the AWS Lambda function runs, including cold start, invocation count, function lifetime, and termination condition.

AWS Lambda metrics 🔗

The following table contains all the metrics reported by the Splunk Lambda Extension:

Metric name

Type

Description

lambda.function.invocation

Counter

Number of Lambda function calls.

lambda.function.initialization

Counter

Number of function cold starts.

lambda.function.initialization.latency

Gauge

Time spent between the start of the extension and the first Lambda invocation, in milliseconds.

lambda.function.shutdown

Counter

Number of function shutdowns.

lambda.function.lifetime

Gauge

Lifetime of the function, in milliseconds. The lifetime of the function might span multiple Lambda invocations.

AWS Lambda dimensions 🔗

The following table contains all the dimensions reported by the Splunk Lambda Extension:

Dimension name

Description

AWSUniqueId

AWS unique ID. Used to correlate metrics with AWS tags.

aws_arn

Amazon Resource Name (ARN) of the Lambda function instance.

aws_region

The AWS Region.

aws_account_id

The AWS Account ID.

aws_function_name

The name of the Lambda function.

aws_function_version

The version of the Lambda function.

aws_function_qualifier

AWS function version qualifier. Can be version or version alias. Available only for invocations.

aws_function_runtime

The AWS Lambda execution environment.

aws_function_shutdown_cause

Reason for the shutdown. Available only for the lambda.function.shutdown metrics.

Tags and properties 🔗

By default, metrics reported by the Splunk Lambda Extension don’t have tag or properties attached to them. To enable this feature, you must configure an AWS data source in Splunk Observability Cloud. See Specify and limit the data and metadata to import.