Fedora 34 : The uresourced resource tool.

The uresourced tool is a daemon that will give resource allocations to active graphical users.

You can enable easy with systemctl command:

[root@desk mythcat]# systemctl status uresourced
○ uresourced.service - User resource assignment daemon
     Loaded: loaded (/usr/lib/systemd/system/uresourced.service; disabled; vend>
     Active: inactive (dead)

[root@desk mythcat]# systemctl enable uresourced
Created symlink /etc/systemd/system/user@.service.wants/uresourced.service → 
/usr/lib/systemd/system/uresourced.service.
[root@desk mythcat]# systemctl start  uresourced
[root@desk mythcat]# systemctl status uresourced
● uresourced.service - User resource assignment daemon
...