Cgroup - s50600822/Notes GitHub Wiki

if your system support cgroupv2, you should see both:

bash-4.4# grep cgroup /proc/filesystems
nodev	cgroup
nodev	cgroup2

Feature	cgroup v1	cgroup v2
Hierarchical Structure	Hierarchical structure with independent controller hierarchies	Unified hierarchy shared by all controllers
Mount Points	Controllers mounted under /sys/fs/cgroup/	Controllers typically mounted under /sys/fs/cgroup
File System	Utilizes cgroupfs pseudo file system	Utilizes normal file system with directories and files
Controllers	Each controller manages specific resources independently	Controllers are more unified and flexible
Resource Distribution	Complex distribution due to separate hierarchies	Unified and consistent resource distribution
Backward Compatibility	Maintains backward compatibility with older kernels	Requires newer kernel, may lack compatibility
Features	Limited features and flexibility	More features and flexibility, including per-thread cgroups