Tuned is a daemon for monitoring and adaptive tuning of system devices built by Red Hat for Fedora/RHEL/CentOS systems. What it does is tweaking the system settings according to some profiles in order to get a desired level of performance and/or behavior from the system devices. Some of the profiles available are:
And you can read what each one of these does here if you're curious about it.
Basically, tuned changes many things in a computer with one command: I/O Settings, CPU-Frequency settings, Kernel-Sysctl settings, etc. in order to make the machine behave as expected according to the selected profile. This is a very powerful and useful tool, (yet easy to use) and now you can also enjoy it's benefits in Ubuntu and derivates.
To install it, just run:
1. sudo apt-get install git git-core build-essential 2. sudo apt-get install rpm python-decorator python-dbus python-gobject python-pyudev python-configobj 3. git clone https://github.com/Jmlevick/tuned-ubuntu.git 4. git checkout dbus-manual-restart 5. sudo make install
Reboot your system and then you can manage tuned with the following commands:
sudo tuned-adm list (list all the available profiles)
sudo tuned-adm profile profile_name (set profile)
More info about Tuned's manipulation is available here.