tuned: A simple daemon that performs monitoring and adaptive configuration of devices in the system Copyright (C) 2008, 2009 Red Hat, Inc. Authors: Phil Knirsch 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. How to use ---------- After installing the package you simply need to start the tuned service either with system-config-services or from the commandline in a rootshell via: service tuned start You can also automatically start it during system startup by switching it on via chkconfig: chkconfig tuned on After that the daemon will run automatically and monitor the usage of various system components. Based on that information components will then be put into lower or higher power saving modes to adapt to the current usage. Currently only ethernet network and and ATA harddisk devices are implemented. The config file /etc/tuned.conf contains several sections in INI style. There is always a "main" section which controls overall options of the daemon. Currently only 1 option is available: interval: Interval for monitoring and tuning in seconds. Default is 10. Each monitoring and tuning plugin has an own section then. Currently only 1 option for plugins is available: enabled: Enabled or disable the plugin. Default is True. Any other value disables it. WARNING: At the moment there is a small incompatibility with tuned and NetworkManager which will results in connectivity loss if you are using tuned and your network devices are controlled by NetworkManager. This will be fixed in a future version of tuned and NetworkManager. At the moment there are two workarounds: 1) Don't use NetworkManager for your Ethernet devices but configure them with system-config-network and enable the network service. 2) Disabled the network tuning in tuned by editing /etc/tuned.conf and uncomment the # enabled=False line in the NetTuning section.