|
1
|
|
|
# |
|
2
|
|
|
# This file is part of Glances. |
|
3
|
|
|
# |
|
4
|
|
|
# SPDX-FileCopyrightText: 2022 Nicolas Hennion <[email protected]> |
|
5
|
|
|
# |
|
6
|
|
|
# SPDX-License-Identifier: LGPL-3.0-only |
|
7
|
|
|
# |
|
8
|
|
|
|
|
9
|
|
|
"""CPU percent stats shared between CPU and Quicklook plugins.""" |
|
10
|
|
|
|
|
11
|
|
|
from typing import List, Optional, TypedDict |
|
12
|
|
|
|
|
13
|
|
|
import psutil |
|
14
|
|
|
|
|
15
|
|
|
from glances.logger import logger |
|
16
|
|
|
from glances.timer import Timer |
|
17
|
|
|
|
|
18
|
|
|
__all__ = ["cpu_percent"] |
|
19
|
|
|
|
|
20
|
|
|
|
|
21
|
|
|
class CpuInfo(TypedDict): |
|
22
|
|
|
cpu_name: str |
|
23
|
|
|
cpu_hz: Optional[float] |
|
24
|
|
|
cpu_hz_current: Optional[float] |
|
25
|
|
|
|
|
26
|
|
|
|
|
27
|
|
|
class PerCpuPercentInfo(TypedDict): |
|
28
|
|
|
key: str |
|
29
|
|
|
cpu_number: int |
|
30
|
|
|
total: float |
|
31
|
|
|
user: float |
|
32
|
|
|
system: float |
|
33
|
|
|
idle: float |
|
34
|
|
|
nice: Optional[float] |
|
35
|
|
|
iowait: Optional[float] |
|
36
|
|
|
irq: Optional[float] |
|
37
|
|
|
softirq: Optional[float] |
|
38
|
|
|
steal: Optional[float] |
|
39
|
|
|
guest: Optional[float] |
|
40
|
|
|
guest_nice: Optional[float] |
|
41
|
|
|
dpc: Optional[float] |
|
42
|
|
|
interrupt: Optional[float] |
|
43
|
|
|
|
|
44
|
|
|
|
|
45
|
|
|
class CpuPercent: |
|
46
|
|
|
"""Get and store the CPU percent.""" |
|
47
|
|
|
|
|
48
|
|
|
def __init__(self, cached_timer_cpu: int = 2): |
|
49
|
|
|
# cached_timer_cpu is the minimum time interval between stats updates |
|
50
|
|
|
# since last update is passed (will retrieve old cached info instead) |
|
51
|
|
|
self.cached_timer_cpu = cached_timer_cpu |
|
52
|
|
|
# psutil.cpu_freq() consumes lots of CPU |
|
53
|
|
|
# So refresh CPU frequency stats every refresh * 2 |
|
54
|
|
|
self.cached_timer_cpu_info = cached_timer_cpu * 2 |
|
55
|
|
|
|
|
56
|
|
|
# Get CPU name |
|
57
|
|
|
self.timer_cpu_info = Timer(0) |
|
58
|
|
|
self.cpu_info: CpuInfo = {'cpu_name': self.__get_cpu_name(), 'cpu_hz_current': None, 'cpu_hz': None} |
|
59
|
|
|
|
|
60
|
|
|
# Warning from PsUtil documentation |
|
61
|
|
|
# The first time this function is called with interval = 0.0 or None |
|
62
|
|
|
# it will return a meaningless 0.0 value which you are supposed to ignore. |
|
63
|
|
|
self.timer_cpu = Timer(0) |
|
64
|
|
|
self.cpu_percent = self._compute_cpu() |
|
65
|
|
|
self.timer_percpu = Timer(0) |
|
66
|
|
|
self.percpu_percent = self._compute_percpu() |
|
67
|
|
|
|
|
68
|
|
|
def get_key(self): |
|
69
|
|
|
"""Return the key of the per CPU list.""" |
|
70
|
|
|
return 'cpu_number' |
|
71
|
|
|
|
|
72
|
|
|
def get_info(self) -> CpuInfo: |
|
73
|
|
|
"""Get additional information about the CPU""" |
|
74
|
|
|
# Never update more than 1 time per cached_timer_cpu_info |
|
75
|
|
|
if self.timer_cpu_info.finished() and hasattr(psutil, 'cpu_freq'): |
|
76
|
|
|
# Get the CPU freq current/max |
|
77
|
|
|
try: |
|
78
|
|
|
cpu_freq = psutil.cpu_freq() |
|
79
|
|
|
except Exception as e: |
|
80
|
|
|
logger.debug(f'Can not grab CPU information ({e})') |
|
81
|
|
|
else: |
|
82
|
|
|
if hasattr(cpu_freq, 'current'): |
|
83
|
|
|
self.cpu_info['cpu_hz_current'] = cpu_freq.current |
|
84
|
|
|
else: |
|
85
|
|
|
self.cpu_info['cpu_hz_current'] = None |
|
86
|
|
|
if hasattr(cpu_freq, 'max'): |
|
87
|
|
|
self.cpu_info['cpu_hz'] = cpu_freq.max |
|
88
|
|
|
else: |
|
89
|
|
|
self.cpu_info['cpu_hz'] = None |
|
90
|
|
|
# Reset timer for cache |
|
91
|
|
|
self.timer_cpu_info.reset(duration=self.cached_timer_cpu_info) |
|
92
|
|
|
return self.cpu_info |
|
93
|
|
|
|
|
94
|
|
|
@staticmethod |
|
95
|
|
|
def __get_cpu_name() -> str: |
|
96
|
|
|
# Get the CPU name once from the /proc/cpuinfo file |
|
97
|
|
|
# Read the first line with the "model name" ("Model" for Raspberry Pi) |
|
98
|
|
|
try: |
|
99
|
|
|
cpuinfo_lines = open('/proc/cpuinfo').readlines() |
|
100
|
|
|
except (FileNotFoundError, PermissionError): |
|
101
|
|
|
logger.debug("No permission to read '/proc/cpuinfo'") |
|
102
|
|
|
return 'CPU' |
|
103
|
|
|
|
|
104
|
|
|
for line in cpuinfo_lines: |
|
105
|
|
|
if line.startswith('model name') or line.startswith('Model') or line.startswith('cpu model'): |
|
106
|
|
|
return line.split(':')[1].strip() |
|
107
|
|
|
|
|
108
|
|
|
return 'CPU' |
|
109
|
|
|
|
|
110
|
|
|
def get_cpu(self) -> float: |
|
111
|
|
|
"""Update and/or return the CPU using the psutil library.""" |
|
112
|
|
|
# Never update more than 1 time per cached_timer_cpu |
|
113
|
|
|
if self.timer_cpu.finished(): |
|
114
|
|
|
# Reset timer for cache |
|
115
|
|
|
self.timer_cpu.reset(duration=self.cached_timer_cpu) |
|
116
|
|
|
# Update the stats |
|
117
|
|
|
self.cpu_percent = self._compute_cpu() |
|
118
|
|
|
return self.cpu_percent |
|
119
|
|
|
|
|
120
|
|
|
@staticmethod |
|
121
|
|
|
def _compute_cpu() -> float: |
|
122
|
|
|
return psutil.cpu_percent(interval=0.0) |
|
123
|
|
|
|
|
124
|
|
|
def get_percpu(self) -> List[PerCpuPercentInfo]: |
|
125
|
|
|
"""Update and/or return the per CPU list using the psutil library.""" |
|
126
|
|
|
# Never update more than 1 time per cached_timer_cpu |
|
127
|
|
|
if self.timer_percpu.finished(): |
|
128
|
|
|
# Reset timer for cache |
|
129
|
|
|
self.timer_percpu.reset(duration=self.cached_timer_cpu) |
|
130
|
|
|
# Update stats |
|
131
|
|
|
self.percpu_percent = self._compute_percpu() |
|
132
|
|
|
return self.percpu_percent |
|
133
|
|
|
|
|
134
|
|
|
def _compute_percpu(self) -> List[PerCpuPercentInfo]: |
|
135
|
|
|
psutil_percpu = enumerate(psutil.cpu_times_percent(interval=0.0, percpu=True)) |
|
136
|
|
|
return [ |
|
137
|
|
|
{ |
|
138
|
|
|
'key': self.get_key(), |
|
139
|
|
|
'cpu_number': cpu_number, |
|
140
|
|
|
'total': round(100 - cpu_times.idle, 1), |
|
141
|
|
|
'user': cpu_times.user, |
|
142
|
|
|
'system': cpu_times.system, |
|
143
|
|
|
'idle': cpu_times.idle, |
|
144
|
|
|
'nice': cpu_times.nice if hasattr(cpu_times, 'nice') else None, |
|
145
|
|
|
'iowait': cpu_times.iowait if hasattr(cpu_times, 'iowait') else None, |
|
146
|
|
|
'irq': cpu_times.irq if hasattr(cpu_times, 'irq') else None, |
|
147
|
|
|
'softirq': cpu_times.softirq if hasattr(cpu_times, 'softirq') else None, |
|
148
|
|
|
'steal': cpu_times.steal if hasattr(cpu_times, 'steal') else None, |
|
149
|
|
|
'guest': cpu_times.guest if hasattr(cpu_times, 'guest') else None, |
|
150
|
|
|
'guest_nice': cpu_times.steal if hasattr(cpu_times, 'guest_nice') else None, |
|
151
|
|
|
'dpc': cpu_times.dpc if hasattr(cpu_times, 'dpc') else None, |
|
152
|
|
|
'interrupt': cpu_times.interrupt if hasattr(cpu_times, 'interrupt') else None, |
|
153
|
|
|
} |
|
154
|
|
|
for cpu_number, cpu_times in psutil_percpu |
|
155
|
|
|
] |
|
156
|
|
|
|
|
157
|
|
|
|
|
158
|
|
|
# CpuPercent instance shared between plugins |
|
159
|
|
|
cpu_percent = CpuPercent() |
|
160
|
|
|
|
nicolargo /
glances
