Cgroups - File /proc/cgroups
¶
This parser reads the content of /proc/cgroups
.
This file shows the control groups information of system.
Sample /proc/cgroups
file:
#subsys_name hierarchy num_cgroups enabled
cpuset 10 48 1
cpu 2 232 1
cpuacct 2 232 1
memory 5 232 1
devices 6 232 1
freezer 3 48 1
net_cls 4 48 1
blkio 9 232 1
perf_event 8 48 1
hugetlb 11 48 1
pids 7 232 1
net_prio 4 48 1
Examples
>>> i_cgroups.get_num_cgroups("memory")
232
>>> i_cgroups.is_subsys_enabled("memory")
True
>>> i_cgroups.data[0].get('hierarchy')
'10'
>>> i_cgroups.subsystems["memory"]["enabled"]
'1'
-
class
insights.parsers.cgroups.
Cgroups
(context)[source]¶ Bases:
insights.core.Parser
Class
Cgroups
parses the content of the/proc/cgroups
.-
data
¶ A list of the subsystem cgroup information
Type: list
-
subsystems
¶ A dict of all subsystems, key is subsystem name and value is dict with keys: hierarchy, num_cgroups, enabled
Type: dict
-
get_num_cgroups
(i_subsys_name)[source]¶ Get value of cgroup number for specified subsystem, raise exception if keyword not found.
Example
>>> i_cgroups.get_num_cgroups("memory") 232 >>> i_cgroups.get_num_cgroups('hugetlb') 48
Parameters: i_subsys_name (str) -- specified subsystem name. Returns: Int value of the specified subsystem cgroups Return type: value (int) Raises: KeyError
-- Exception is raised if given subsystem name is wrong
-
is_subsys_enabled
(i_subsys_name)[source]¶ Get enable or not of cgroup of specified subsystem, raise exception if keyword not found.
Example
>>> i_cgroups.is_subsys_enabled("memory") True >>> i_cgroups.is_subsys_enabled('hugetlb') True
Parameters: i_subsys_name (str) -- specified subsystem name. Returns: Return True if the cgroup of specified subsystem is enabled, else return False Return type: value (boolean) Raises: KeyError
-- Exception is raised if given subsystem name is wrong
-