Negative effects of the RHEL default logging setup on performance and their mitigations

This document describes two negative effects of the default logging environment setup in RHEL on system performance and it also outlines recommended mitigations.

Memory and storage
Systemd-journald on RHEL is configured to auto-detect which storage system to use for journal files, "volatile" or "persistent". The /var/log/journal file is not created by default, so...