linuxexpert-practice-labs/labs/rhcsa/4-4-tuning-profiles

RHCSA 4.4: Tuning profiles

Choosing the recommended tuning profile, setting one that lasts across reboots, and what happens when the tuned daemon isn't running.

Before you start

The lab installs tuned if it's missing, starts and enables it, and sets the profile balanced (or throughput-performance, if balanced is the one tuned recommends on your VM). Reset puts back the profile you had.

Tasks

1. Set the VM's tuning profile to the one tuned recommends.
2. Set the profile to powersave and make sure it's still active after a reboot.
3. Stop and disable tuned, reboot, and see what tuned-adm active says; then put it right: tuned enabled and running again, with the profile you chose active.

Hints

• tuned-adm recommend, tuned-adm profile NAME, tuned-adm active.
• tuned-adm list; the choice is kept in /etc/tuned/active_profile.
• systemctl disable --now tuned, then systemctl enable --now tuned.