Tuned: Daemon for monitoring and adaptive tuning of system devices.

(This is tuned 2.0 with a new code base. If you are looking for the older version, please check out branch '1.0' in our Git repository.)

How to use it

In Fedora, Red Hat Enterprise Linux, and their derivates install tuned package (optionally tuned-utils, tuned-utils-systemtap, and tuned-profiles-compat):

yum install tuned

After the installation, start the tuned service:

systemctl start tuned

You might also want to run tuned whenever your machine starts:

systemctl enable tuned

If the daemon is running you can easily control it using 'tuned-adm' command line utility. This tool communicates with the daemon over DBus. Any user can list the available profiles and see which one is active. But the profiles can be switched only by root user or by any user with physical console allocated on the machine (X11, physical tty, but no SSH).

To see the current active profile, run:

$ tuned-adm active

To list all available profiles, run:

$ tuned-adm list

To switch to a different profile, run:

tuned-adm profile

Your profile choice is also written into /etc/tuned/active_profile and this choice is used when the daemon is restarted (e.g. with the machine reboot).

To disable all tunings, run:

tuned-adm off

tuned-adm recommend

Recommend profile suitable for your system. Currently only static detection is implemented - it decides according to data in /etc/system-release-cpe and virt-what output. The rules for autodetection are defined in the file /usr/lib/tuned/recommend.d/50-tuned.conf. They can be overridden by the user by putting a file to /etc/tuned/recommend.d or a file named recommend.conf into /etc/tuned (see tuned-adm(8) for more details). The default rules recommend profiles targeted to the best performance or the balanced profile if unsure.

Available tunings

We are currenlty working on many new tuning features. Some are described in the manual pages, some are yet undocumented.

Authors

The best way to contact the authors of the project is to use our mailing list: [email protected]

In case you want to contact individual author, you will find the e-mail address in every commit message in our Git repository: https://github.com/redhat-performance/tuned.git

You can also join #fedora-power IRC channel on Freenode.

Web page: https://tuned-project.org/

Contributing

See the file CONTRIBUTING.md for guidelines for contributing.

License

Copyright (C) 2008-2019 Red Hat, Inc.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Full text of the license is enclosed in COPYING file.

The Developer Certificate of Origin, distributed in the file 'DCO' is licensed differently, see the file for the text of the license.

The icon:

The Tuned icon was created by Mariia Leonova [email protected] and it is licensed under Creative Commons Attribution-ShareAlike 3.0 license (http://creativecommons.org/licenses/by-sa/3.0/legalcode).