Further reading

• Using control groups Version 1 with systemd:

  https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/managing_monitoring_and_updating_the_kernel/using-control-groups-version-1-with-systemd_managing-monitoring-and-updating-the-kernel

• The Linux kernel Completely Fair Scheduler:

  https://www.kernel.org/doc/html/latest/scheduler/sched-design-CFS.html

• For anyone who still needs to work with RHEL 7 or RHEL 7 clones on machines with multiple CPUs, here's a procedure for using the cpuset controller:

  https://www.redhat.com/en/blog/world-domination-cgroups-part-6-cpuset

• How to set a ulimit value permanently:

  https://linuxhint.com/permanently_set_ulimit_value/