Introduction

TuneD is a system tuning service for Linux. It:

• monitors connected devices using the udev device manager
• tunes system settings according to a selected profile
• supports various types of configuration like sysctl, sysfs, or kernel boot command line parameters, which are integrated in a plug-in architecture
• supports hot plugging of devices and can be controlled from the command line or through D-Bus, so it can be easily integrated into existing administering solutions: for example, with Cockpit
• can be run in no-daemon mode with limited functionality (for example, no support for D-Bus, udev, tuning of newly created processes, and so on) for systems with reduced resources
• stores all its configuration cleanly in one place – in the TuneD profile – instead of having configuration on multiple places and in custom scripts

TuneD profiles:

• can be defined hierarchically, which reduces duplication and simplifies maintenance:

  More specialized profiles can inherit generic profiles and just change what is needed instead of duplicating the code. For example, you can built a generic profile for HTTP server upon the throughput-performance profile and later create two more specialized profiles for the Apache server and the Nginx server, basing both profiles on the generic HTTP server profile.

• support full rollback:

  The system can be easily returned to the state before the profile was applied. This can be handy for testing, benchmarking, experimenting, and so on. For example, you can set up a cron rule to apply a certain profile during business hours and a different one at night.

• include a number of predefined profiles for common use cases:

  For example, presets for high throughput, low latency, or powersave are distributed. Profiles optimizing performance for various products like SAP, dBase servers, and so on are also provided, and it is possible to fully customize them.

Documentation

Some documentation is available in the Fedora Power Management Guide, but it is incomplete and may not be up-to-date. New documentation is being worked on.

Some useful information can be also found in the TuneD presentation given during the DevConf 2019 in Brno.

Download

Releases are available for download from the GitHub releases page.

Reporting bugs

Bugs can be reported through the GitHub issues tracker.

Development

All development happens on the GitHub project page.

If you want to contribute, the best way is to create a pull request through GitHub. If you are not familiar with GitHub, you can also send patches and ideas to the power-management AT lists.fedoraproject.org e-mail address or to individual authors from the git log who worked on the last release.

License

TuneD is distributed under the GNU General Public License version 2 or later: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html.