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trash/pt02
Executable file
117
trash/pt02
Executable file
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#!/usr/bin/env python3
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from ctypes import CDLL
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from time import sleep
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import os
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"""
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Execute the command
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find /sys/fs/cgroup -name memory.pressure
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to find available memory.pressue files (except /proc/pressure/memory).
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(actual for cgroup2)
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"""
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psi_path = '/proc/pressure/memory'
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def mlockall():
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MCL_CURRENT = 1
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MCL_FUTURE = 2
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MCL_ONFAULT = 4
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libc = CDLL('libc.so.6', use_errno=True)
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result = libc.mlockall(
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MCL_CURRENT | MCL_FUTURE | MCL_ONFAULT
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)
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if result != 0:
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result = libc.mlockall(
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MCL_CURRENT | MCL_FUTURE
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)
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if result != 0:
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print('WARNING: cannot lock all memory')
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else:
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pass
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else:
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pass
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mlockall()
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def psi_path_to_metrics(psi_path):
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with open(psi_path) as f:
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psi_list = f.readlines()
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# print(psi_list)
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some_list, full_list = psi_list[0].split(' '), psi_list[1].split(' ')
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#print(some_list, full_list)
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some_avg10 = some_list[1].split('=')[1]
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some_avg60 = some_list[2].split('=')[1]
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some_avg300 = some_list[3].split('=')[1]
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full_avg10 = full_list[1].split('=')[1]
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full_avg60 = full_list[1].split('=')[1]
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full_avg300 = full_list[1].split('=')[1]
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return (some_avg10, some_avg60, some_avg300,
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full_avg10, full_avg60, full_avg300)
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(some_avg10, some_avg60, some_avg300, full_avg10, full_avg60, full_avg300
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) = psi_path_to_metrics(psi_path)
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def cgroup2_root():
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"""
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"""
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with open('/proc/mounts') as f:
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for line in f:
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if line.startswith('cgroup2 '):
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return line[7:].rpartition(' cgroup2 ')[0]
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i = cgroup2_root()
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print(i)
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def get_psi_mem_files(cgroup2_path):
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"""
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"""
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path_list = []
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for root, dirs, files in os.walk(cgroup2_path):
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for file in files:
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path = os.path.join(root, file)
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if path.endswith('/memory.pressure'):
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path_list.append(path)
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return path_list
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if i is not None:
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print(get_psi_mem_files(i))
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