mirror of
https://github.com/GNS3/gns3-server
synced 2024-11-28 19:28:07 +00:00
49 lines
1.5 KiB
Python
49 lines
1.5 KiB
Python
|
# -*- coding: utf-8 -*-
|
||
|
|
#
|
||
|
|
# Copyright (C) 2020 GNS3 Technologies Inc.
|
||
|
|
#
|
||
|
|
# This program is free software: you can redistribute it and/or modify
|
||
|
|
# it under the terms of the GNU General Public License as published by
|
||
|
|
# the Free Software Foundation, either version 3 of the License, or
|
||
|
|
# (at your option) any later version.
|
||
|
|
#
|
||
|
|
# This program is distributed in the hope that it will be useful,
|
||
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
# GNU General Public License for more details.
|
||
|
|
#
|
||
|
|
# You should have received a copy of the GNU General Public License
|
||
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
|
||
|
|
import psutil
|
||
|
|
import time
|
||
|
|
|
||
|
|
|
||
|
|
class CpuPercent:
|
||
|
|
"""
|
||
|
|
Ensures a minumum interval between two cpu_percent() calls
|
||
|
|
"""
|
||
|
|
|
||
|
|
_last_measurement = None # time of last measurement
|
||
|
|
_last_cpu_percent = 0.0 # last cpu_percent
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def get(cls, interval=None):
|
||
|
|
"""
|
||
|
|
Get CPU utilization as a percentage
|
||
|
|
|
||
|
|
:returns: float
|
||
|
|
"""
|
||
|
|
|
||
|
|
if interval:
|
||
|
|
cls._last_cpu_percent = psutil.cpu_percent(interval=interval)
|
||
|
|
cls._last_measurement = time.monotonic()
|
||
|
|
else:
|
||
|
|
cur_time = time.monotonic()
|
||
|
|
if cls._last_measurement is None or \
|
||
|
|
(cur_time - cls._last_measurement) >= 1.9:
|
||
|
|
cls._last_cpu_percent = psutil.cpu_percent(interval=None)
|
||
|
|
cls._last_measurement = cur_time
|
||
|
|
|
||
|
|
return cls._last_cpu_percent
|