Is the resource level limiting function (ceilings) enabled or disabled in the CentOS Linux operating system?

In CentOS Linux, the resource ceilings function is not enabled by default as a separate system feature. Typically, resource management in Linux is carried out using cgroups (control groups), which allow limiting the use of CPU, memory, disk, and other resources.

If we are talking about the resource ceilings mechanism from a real-time context (for example, in systems supporting POSIX RT), then in standard CentOS this feature is not activated without additional configuration and patches.

To limit resources in CentOS, the common tools are:

• cgroups (via systemd or directly)
• ulimit for process-level resource restrictions

Thus, the 'resource ceilings' function as a separate mechanism in CentOS is disabled by default and requires configuration or the use of other tools for resource management.