Do you want to improve performance and save storage space ??? disable persistent storage for journal

You really only need persistent storage enabled if you don’t have a central syslog running on your network or if you are troubleshooting
an issue. If the os is stable then… turn persistent storage off. You will save storage and performance will be better.

Here’s all you need to do:
vi the /etc/systemd/journald.conf file and update it as follows:

This file is part of systemd.