display swap and rss in cgroup services

cgroup_swap.py

#!/usr/bin/env python3
from pathlib import Path


def containerd():
	for p in Path("/sys/fs/cgroup/memory/system.slice/containerd.service/").iterdir():
		if not p.is_dir():
			continue
		print(p.name)
		with (p / "memory.stat").open("r") as f:
			for line in f:
				if not line.startswith("swap "):
					continue
				print("\t", line[:-1])


def stat(reader):
	return {k: int(v) for k, v in (
		line[:-1].split(" ", 1) for line in reader)
		}


def services():
	for service in Path("/sys/fs/cgroup/memory/system.slice/").glob("*.service"):
		with (service / "memory.stat").open("r") as f:
			s = stat(f)
			print(s["swap"], s["rss"], service.name)

services()