Please make sure to use compatible java version and also have a look at the other system requirements for AEM to work - https://experienceleague.adobe.com/docs/experience-manager-65/deploying/introduction/technical-requirements.html?lang=en#supported-platforms

Would you be able to tell the use case?There is some advance Runtime Java parameters e.g. XX:ActiveProcessorCount that can override the number of CPUs that the VM can use.Please look at the official Java Documentation - https://docs.oracle.com/en/java/javase/11/tools/java.html#GUID-3B1CE181-CD30-417...