cgclassify
move running processes to a cgroup
TLDR
Move a process to the CPU cgroup "student"
$ cgclassify -g [cpu:student] [1234]
Move a process based on /etc/cgrules.conf$ cgclassify [1234]
Move to cgroup with sticky mode$ cgclassify --sticky -g [cpu:/student] [1234]
SYNOPSIS
cgclassify [options] pid...
DESCRIPTION
cgclassify moves running processes to control groups (cgroups). This allows changing resource limits and accounting for already-running processes without restarting them.When used without the -g option, processes are classified according to rules in /etc/cgrules.conf.
PARAMETERS
-g controllers:path
Move process to specified cgroup hierarchy--sticky
Prevent cgred daemon from reclassifying the process--cancel-sticky
Allow cgred to manage the process again
CONFIGURATION
/etc/cgrules.conf
Rules for automatic cgroup classification when -g is not specified./etc/cgconfig.conf
Cgroup hierarchy and controller configuration.
INSTALL
sudo apt install cgroup-tools
sudo apk add cgroup-tools
CAVEATS
Requires cgroups v1 tools (libcgroup). For cgroups v2, use different tools. Moving processes between cgroups may affect their resource access immediately.
