Systemd made imposing a limits on a customer account so they do not bring the server down relatively easy. You just need to ensure that it cgroups are fully enabled . nano /etc/default/grub find GRUB_CMDLINE_LINUX=” ” and add the systemd.unified_cgroup_hierarchy=1 there, save update-grub && reboot Next execute systemctl set-property user.slice CPUAccounting=1 […]