Lambda function metrics - AWS Compute Optimizer
This documentation is a draft for private preview for regions in the AWS European Sovereign Cloud. Documentation content will continue to evolve. Published: January 1, 2026.

Lambda function metrics

Compute Optimizer analyzes the following CloudWatch metrics of your Lambda functions.

Metric Description
Invocations

The number of times your function code is executed, including successful executions and executions that result in a function error.
Duration

The amount of time that your function code spends processing an event.
Errors

The number of invocations that result in a function error. Function errors include exceptions thrown by your code and exceptions thrown by the Lambda runtime. The runtime returns errors for issues such as timeouts and configuration errors.
Throttles

The number of invocation requests that are throttled.

For more information about these metrics, see Working with AWS Lambda function metrics in the AWS Lambda Developer Guide.