CGCREATE - create new cgroup(s) - man - [phpMan]

Che Dong

Create cgroups, used to limit, measure, and control resources used by processes.

Create a new group
cgcreate -g {{group_type}}:{{group_name}}
Create a new group with multiple cgroup types
cgcreate -g {{group_type1}},{{group_type2}}:{{group_name}}
Create a subgroup
mkdir /sys/fs/cgroup/{{group_type}}/{{group_name}}/{{subgroup_name}}

CGCREATE(1)                               libcgroup Manual                               CGCREATE(1)

NAME
       cgcreate - create new cgroup(s)


SYNOPSIS
       cgcreate  [-h]  [-t  <tuid>:<tgid>] [-a <agid>:<auid>] [-f mode] [-d mode] [-s mode] -g <con‐
       trollers>:<path> [-g ...]


DESCRIPTION
       The command creates new cgroup(s) defined by the options -g.


       -a <agid>:<auid>
              defines the name of the user and the group which own the rest of the  defined  control
              group’s  files.  These  users  are allowed to set subsystem parameters and create sub‐
              groups.  The default value is the same as has the parent cgroup.


       -d, --dperm=mode
              sets the permissions of a control groups directory.  The permissions needs to be spec‐
              ified as octal numbers e.g.  -d 775.


       -f, --fperm=mode
              sets the permissions of the control groups parameters.  The permissions  needs  to  be
              specified  as  octal numbers e.g.  -f 775.  The value is not used as given because the
              current owner's permissions are used as an umask (so 777 will  set  group  and  others
              permissions to the owners permissions).


       -g <controllers>:<path>
              defines  control  groups to be added.  controllers is a list of controllers. Character
              "*" can be used as a shortcut for "all mounted controllers".   path  is  the  relative
              path  to  control  groups  in the given controllers list. This option can be specified
              multiple times.


       -h, --help
              display this help and exit


       -s, --tperm=mode
              sets the permissions of the control group tasks file.  The  permissions  needs  to  be
              specified  as  octal numbers e.g.  -s 775.  The value is not used as given because the
              current owner's permissions are used as an umask (so 777 will  set  group  and  others
              permissions to the owners permissions).


       -t <tuid>:<tgid>
              defines  the name of the user and the group, which owns tasks file of the defined con‐
              trol group. I.e. this user and members of this group have write access  to  the  file.
              The default value is the same as has the parent cgroup.


ENVIRONMENT VARIABLES
       CGROUP_LOGLEVEL
              controls verbosity of the tool. Allowed values are DEBUG, INFO, WARNING or ERROR.


EXAMPLES
       cgcreate -g *:student devices:teacher
              create  control  group  student  in  all  mounted hierarchies and create control group
              teacher in hierarchy containing controller devices.





SEE ALSO
       cgrules.conf (5) cgexec (1) cgclassify (1)

Linux                                        2009-03-15                                  CGCREATE(1)

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