To evaluate the accuracy and speed of the autoscaler or scheduler in cloud environment, the metrics are approved by the Standard Performance Evaluation Corporation (SPEC) [Bauer, A., Grohmann, J., Herbst, N., & Kounev, S.: On the value of service demand estimation for auto-scaling. Lecture Notes in Computer Science, 142–156 (2018). https://doi.org/10.1007/978-3-319-74947-1_10] which have been used in some studies.
They calculate the amount of overprovisioning and underprovisioning in cloud/fog computing.