How do I use 'tuned' to apply tuning profiles?

Environment

• Red Hat Enterprise Linux 6
• Red Hat Enterprise Linux 7
• Red Hat Enterprise Linux 8
• Red Hat Enterprise Linux 9
• tuned

Issue

• How to list all the available tuned profiles?
• How to check the default tuned profile set on the system?
• How do I use tuned to apply tuning profiles to my machine?

Resolution

• Install tuned package:

# yum install tuned

• Enable and start tuned service:

Red Hat Enterprise Linux 6:

# chkconfig tuned on
# service tuned start

Red Hat Enterprise Linux 7, 8, and 9:

# systemctl enable tuned
# systemctl start tuned

• Check the default tuned profile set for the system:

# tuned-adm active
Current active profile: throughput-performance

# cat /etc/tuned/active_profile
throughput-performance

• List the available tuned profiles (default):

# tuned-adm list
Available profiles:
- balanced                    - General non-specialized tuned profile
- desktop                     - Optimize for the desktop use-case
- latency-performance         - Optimize for deterministic performance at the cost of increased power consumption
- network-latency             - Optimize for deterministic performance at the cost of increased power consumption, focused on low latency network performance
- network-throughput          - Optimize for streaming network throughput, generally only necessary on older CPUs or 40G+ networks
- powersave                   - Optimize for low power consumption
- throughput-performance      - Broadly applicable tuning that provides excellent performance across a variety of common server workloads
- virtual-guest               - Optimize for running inside a virtual guest
- virtual-host                - Optimize for running KVM guests
Current active profile: throughput-performance

• Set the desired profile (eg: network-throughput):

# tuned-adm profile network-throughput 

• Verify the tuned profile:

# tuned-adm active
Current active profile: network-throughput

# tuned-adm verify
Verfication succeeded, current system settings match the preset profile.
See tuned log file ('/var/log/tuned/tuned.log') for details.

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