/sys/fs/cgroup/unified/system.slice/apache2.service
Directories:

• /sys/fs/cgroup/unified/system.slice

Files:

• cgroup.events
• cgroup.procs
• cgroup.max.descendants
• cpu.stat
• cgroup.type
• cgroup.stat
• cgroup.threads
• cgroup.controllers
• cgroup.subtree_control
• cgroup.max.depth