Comment 11 for bug 1837580

try this :

modif : /etc/systemd/user.conf
           /etc/systemd/system.conf
with :
        DefaultlimitNOFILE=65535
        DefaultlimitMEMLOCK=5000000

modif : /etc/security/limits.conf

with :

        mkasberg hard nofile 65535
        mkasberg soft nofile 65535
        @sudo hard memlock 5000000
        @sudo soft memlock 5000000

reboot

ulimit -l

you will see :
5000000