/sys/fs/cgroup/memory/system.slice/system-postgresql.slice
Directories:

• /sys/fs/cgroup/memory/system.slice
• /sys/fs/cgroup/memory/system.slice/system-postgresql.slice/postgresql@11-main.service

Files:

• cgroup.procs
• memory.use_hierarchy
• memory.kmem.tcp.usage_in_bytes
• memory.soft_limit_in_bytes
• memory.force_empty
• memory.pressure_level
• memory.move_charge_at_immigrate
• memory.kmem.tcp.max_usage_in_bytes
• memory.max_usage_in_bytes
• memory.oom_control
• memory.stat
• memory.kmem.slabinfo
• memory.limit_in_bytes
• memory.swappiness
• memory.numa_stat
• memory.kmem.failcnt
• memory.kmem.max_usage_in_bytes
• memory.usage_in_bytes
• tasks
• memory.failcnt
• cgroup.event_control
• memory.kmem.tcp.failcnt
• memory.kmem.limit_in_bytes
• notify_on_release
• memory.kmem.usage_in_bytes
• memory.kmem.tcp.limit_in_bytes
• cgroup.clone_children