NAME¶
tuned-adm - command line tool for switching between different tuning profiles
SYNOPSIS¶
tuned-adm [list | active | profile [profile]
| off | verify | recommend]
DESCRIPTION¶
This command line utility allows you to switch between user definable tuning
profiles. Several predefined profiles are already included. You can even
create your own profile, either based on one of the existing ones by copying
it or make a completely new one. The distribution provided profiles are stored
in subdirectories below /usr/lib/tuned and the user defined profiles in
subdirectories below /etc/tuned. If there are profiles with the same
name in both places, user defined profiles have precedence.
OPTIONS¶
- list
- List all available profiles.
- active
- Show current active profile.
- profile [PROFILE_NAME]
- Switches to the given profile. If none is given then all available
profiles are listed. If the profile given is not valid the command
gracefully exits without performing any operation.
- verify
- Verifies current profile against system settings. Outputs information
whether system settings match current profile or not (e.g. somebody
modified a sysfs/sysctl value by hand). Detailed information about what is
checked, what value is set and what value is expected can be found in the
log.
- recommend
- Recommend a 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. The default rules
recommend profiles targeted to the best performance, or the balanced
profile if unsure.
The default rules can be overridden by the user by putting a
file named recommend.conf into /etc/tuned, or by creating a file
in the /etc/tuned/recommend.d directory. The file
/etc/tuned/recommend.conf is evaluated first. If no match is
found, the files in the /etc/tuned/recommend.d directory are
merged with the files in the /usr/lib/tuned/recommend.d directory
(if there is a file with the same name in both directories, the one from
/etc/tuned/recommend.d is used) and the files are evaluated in
alphabetical order. The first matching entry is used.
- off
- Unload tunings.
FILES¶
/etc/tuned/*
/usr/lib/tuned/*
AUTHOR¶
Jaroslav Škarvada <jskarvad@redhat.com>
Jan Kaluža <jkaluza@redhat.com>
Jan Včelák <jvcelak@redhat.com>
Marcela Mašláňová <mmaslano@redhat.com>
Phil Knirsch <pknirsch@redhat.com>
