Amazon Athena has released new Amazon CloudWatch metrics that provide insight on the compute resources your queries use. Starting today, you can use CloudWatch to analyze, chart, and monitor the utilization of Provisioned Capacity resources which helps you make informed adjustments to capacity and optimize cost. You can also inspect query-level metrics, which now include the compute used, measured in Data Processing Units (DPU), to understand how much capacity is used by each query that you run.
Source:: Amazon AWS