$ ls /sys/fs/cgroup
1 cgroup.pressure cpu.pressure elogind io.stat memory.stat
c1 cgroup.procs cpuset.cpus.effective io.cost.model irq.pressure misc.capacity
cgroup.controllers cgroup.stat cpuset.mems.effective io.cost.qos memory.numa_stat misc.current
cgroup.max.depth cgroup.subtree_control cpu.stat io.pressure memory.pressure
cgroup.max.descendants cgroup.threads cpu.stat.local io.prio.class memory.reclaim
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