It is possible to find out historical information for the CPU whether customers have exceeded this limit?

Question

Is it possible to find out historical information for the CPU whether customers have exceeded this limit? Log files that give us an indication of which subscriptions have reached the MAXIMUM CPU utilization - measured by the metrics that were set to the maximum in cGroups.

Answer

This feature  is yet to be implemented in Plesk. Please take a part in product improvement and share your thoughts with development team by the link https://features.plesk.com/tabs/28-planned-roadmap
For the time being you can monitor the historical information of CPU use by subscription.