CGCLASSIFY

Section: libcgroup Manual (1)
Updated: 2009-03-15
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NAME

cgclassify - move running task(s) to given cgroups

SYNOPSIS

cgclassify [-g <controllers>:<path>] [--sticky | --cancel-sticky] <pidlist>

DESCRIPTION

this command moves processes defined by the list of processes (pidlist) to the given control groups.

The pids in the pidlist are separated by spaces

-g <controllers>:<path>

defines the control groups where the task will be moved. controllers is a list of controllers and path is the relative path to control groups in the given controllers list.

This flag can be used multiple times to define multiple pairs of lists of controllers and relative paths. Instead of the list of all mounted controllers, the wildcard * can be used.

If this option is not used then cgclassify will automatically move the task to a control group based on /etc/cgrules.conf.

--sticky

If this option is used, the daemon of service cgred (cgrulesengd process) does not change both the specified pidlist and their children tasks. Without this option, the daemon does not change the specified pidlist but it automatically changes their child tasks to the right cgroup based on /etc/cgrules.conf.

--cancel-sticky

If this option is used, the daemon of service cgred (cgrulesengd process) can automatically change both the specified pidlist and their child tasks to the right cgroup based on /etc/cgrules.conf.

ENVIRONMENT VARIABLES

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

FILES

/etc/cgrules.conf: default libcgroup configuration file
/etc/cgrules.d: default libcgroup configuration files directory

EXAMPLES

cgclassify -g cpu:student 1234: moves process with pid number 1234 to control group student in cpu hierarchy.
cgclassify 1234: moves process with pid number 1234 to control groups based on /etc/cgrules.conf configuration file.
cgclassify --sticky -g cpu:/student 1234: moves process with pid number 1234 to control group student in cpu hierarchy. The daemon of service cgred does not change cgroups of pid 1234 and its children (based on /etc/cgrules.conf).