[MESOS-2961] Add cpuacct subsystem utils to cgroups

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.24.0
• Component/s: containerization, docker
• Labels: containerizer isolation mesosphere

Environment

linux

• Target Version/s: 0.24.0
• Sprint: Mesosphere Sprint 13, Mesosphere Sprint 14
• Story Points: 2
• Assignee: Jojy Varghese
• Reporter: Jojy Varghese
• Shepherd: Timothy Chen
• Created: 30/Jun/15 17:14
• Updated: 26/Nov/18 12:21
• Resolved: 26/Nov/18 12:21

Description

Current cgroups implementation does not have a cpuacct subsystem implementation. This subsystem reports important metrics like user and system CPU ticks spent by a process. "cgroups" namespace has subsystem specific utilities for "cpu", "memory" etc. It could use other subsystems specific utils (eg. cpuacct).

In the future, we could also view cgroups as a mesos-subsystem with features like event notifications.

Although refactoring cgroups would be a different epic, listing the possible tasks:

• Have hierarchies, subsystems abstracted to represent the domain
• Create "cgroups service"
• "cgroups service" listen to update events from the OS on files like stats. This would be an interrupt based system(maybe use linux fsnotify)
• "cgroups service" services events to mesos (containers for example).

Issue Links

• is depended upon by: MESOS-2951 Inefficient container usage collection