NAME

       tuned-main.conf - Tuned global configuration file

SYNOPSIS

       /etc/tuned/tuned-main.conf

DESCRIPTION

       This   man   page   documents   format  of  the  Tuned  global  configuration  file.   The
       tuned-main.conf file uses the ini-file format.

       daemon=BOOL
              This defines whether Tuned will use daemon or not. It is boolean value.  It can  be
              True  or  1  if  the  daemon  is  enabled  and  False  or  0 if disabled. It is not
              recommended to disable daemon, because many functions will not work without daemon,
              e.g.   there will be no D-Bus, no settings rollback, no hotplug support, no dynamic
              tuning, ...

       dynamic_tuning=BOOL
              This defines whether the dynamic tuning is enabled. It is boolean value.  It can be
              True or 1 if the dynamic tuning is enabled and False or 0 if disabled. In such case
              only the static tuning will be used. Please note if it is enabled here, it is still
              possible  to individually disable it in plugins. It is only applicable if daemon is
              enabled.

       sleep_interval=INT
              Tuned daemon is periodically waken after INT seconds  and  checks  for  events.  By
              default  this  is  set  to  1 second. If you have Python 2 interpreter with applied
              patch from Red Hat Bugzilla #917709 this controls responsiveness time of  Tuned  to
              commands  (i.e.  if  you  request  profile switch, it may take up to 1 second until
              Tuned reacts).  Increase this number for higher responsiveness times and more power
              savings  (due  to  lower  number  of  wakeups). In case you have unpatched Python 2
              interpreter, this settings will have no visible  effect,  because  the  interpreter
              will poll 20 times per second. It is only applicable if daemon is enabled.

       update_interval=INT
              Update interval for dynamic tuning (in seconds). Tuned daemon is periodically waken
              after INT seconds, updates its  monitors,  calculates  new  tuning  parameters  for
              enabled  plugins and applies the changes. Plugins that have disabled dynamic tuning
              are not processed. By default the INT is set to 10 seconds.  Tuned  daemon  doesn't
              periodically  wake  if  dynamic tuning is globally disabled (see dynamic_tuning) or
              this setting set to 0.  This  must  be  multiple  of  sleep_interval.  It  is  only
              applicable if daemon is enabled.

       recommend_command=BOOL
              This controls whether recommend functionality will be enabled or not. It is boolean
              value. It can be True or 1 if the recommend command is enabled and False  or  0  if
              disabled.  If  disabled  recommend command will be not available in CLI, tuned will
              not parse  recommend.conf  and  will  return  one  hardcoded  profile  (by  default
              balanced). It is only applicable if daemon is enabled. By default it's set to True.

       reapply_sysctl=BOOL
              This  controls  whether  to  reapply  sysctl  settings  from  /run/sysctl.d/*.conf,
              /etc/sysctl.d/*.conf and /etc/sysctl.conf after Tuned sysctl settings are  applied.
              These  are  locations  supported  by  sysctl --system, excluding those that contain
              sysctl configuration files provided by system packages.  So  if  reapply_sysctl  is
              set  to  True  or  1,  Tuned sysctl settings will not override user-provided system
              sysctl settings. If set to False or 0, Tuned sysctl settings will  override  system
              sysctl settings. By default it's set to True.

       default_instance_priority=INT
              Default instance (unit) priority. By default it's 0. Each unit has a priority which
              is by default preset to the INT. It can be overridden in the Tuned profile  by  the
              priority  option.  Tuned  units are processed in order defined by their priorities,
              i.e. unit with the lowest number is processed as the first.

EXAMPLE

         no_daemon = 0
         dynamic_tuning = 1
         sleep_interval = 1
         update_interval = 10
         recommend_command = 0
         reapply_sysctl = 1
         default_instance_priority = 0

FILES

       /etc/tuned/tuned-main.conf

SEE ALSO

       tuned(8)

AUTHOR

       Written by Jaroslav Škarvada <jskarvad@redhat.com>.

REPORTING BUGS

       Report bugs to https://bugzilla.redhat.com/.