Performance
If the solution's AWS Lambda function does not process all scheduled instances before its next invocation, the solution logs the error in Amazon CloudWatch Logs, and sends an Amazon Simple Notification Service (Amazon SNS) notification to the error SNS topic. To help ensure that all instances are processed before the next invocation, you can change the default interval at which the Lambda function runs or launch multiple deployments of the solution with different tag names.
If you increase the default interval, this might reduce the granularity of your schedules. For example, a Lambda function set to run on a 15-minute interval will only perform start and stop actions every 15 minutes.
To schedule a large number of instances, we recommend using an interval of at least five minutes and increasing the memory size of the Instance Scheduler's main AWS Lambda function using the Memory Size parameter.