mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
71 lines
1.8 KiB
71 lines
1.8 KiB
#!/usr/bin/env python3 |
|
# |
|
# Copyright (C) 2022 Roman Gushchin <[email protected]> |
|
# Copyright (C) 2022 Meta |
|
|
|
import os |
|
import argparse |
|
import sys |
|
|
|
|
|
def scan_cgroups(cgroup_root): |
|
cgroups = {} |
|
|
|
for root, subdirs, _ in os.walk(cgroup_root): |
|
for cgroup in subdirs: |
|
path = os.path.join(root, cgroup) |
|
ino = os.stat(path).st_ino |
|
cgroups[ino] = path |
|
|
|
# (memcg ino, path) |
|
return cgroups |
|
|
|
|
|
def scan_shrinkers(shrinker_debugfs): |
|
shrinkers = [] |
|
|
|
for root, subdirs, _ in os.walk(shrinker_debugfs): |
|
for shrinker in subdirs: |
|
count_path = os.path.join(root, shrinker, "count") |
|
with open(count_path) as f: |
|
for line in f.readlines(): |
|
items = line.split(' ') |
|
ino = int(items[0]) |
|
# (count, shrinker, memcg ino) |
|
shrinkers.append((int(items[1]), shrinker, ino)) |
|
return shrinkers |
|
|
|
|
|
def main(): |
|
parser = argparse.ArgumentParser(description='Display biggest shrinkers') |
|
parser.add_argument('-n', '--lines', type=int, help='Number of lines to print') |
|
|
|
args = parser.parse_args() |
|
|
|
cgroups = scan_cgroups("/sys/fs/cgroup/") |
|
shrinkers = scan_shrinkers("/sys/kernel/debug/shrinker/") |
|
shrinkers = sorted(shrinkers, reverse = True, key = lambda x: x[0]) |
|
|
|
n = 0 |
|
for s in shrinkers: |
|
count, name, ino = (s[0], s[1], s[2]) |
|
if count == 0: |
|
break |
|
|
|
if ino == 0 or ino == 1: |
|
cg = "/" |
|
else: |
|
try: |
|
cg = cgroups[ino] |
|
except KeyError: |
|
cg = "unknown (%d)" % ino |
|
|
|
print("%-8s %-20s %s" % (count, name, cg)) |
|
|
|
n += 1 |
|
if args.lines and n >= args.lines: |
|
break |
|
|
|
|
|
if __name__ == '__main__': |
|
main()
|
|
|