How to limit CPU and memory usage on Plesk for Linux?
There are two possible tools to limit CPU and memory usage on Linux:
Cgroups Manager. Please check the requirements and other information in our documentation. Please note that currently, it is possible on Service Plan and Subscription levels only. You can vote for the implementation of such limiting on Reseller level at our UserVoice portal. Most upvoted features are more likely to be included in future product updates.
LVE manager feature in CloudLinux. Please refer to CloudLinux documentation.
For more details please contact CloudLinux, this feature is developed and supported by them directly.