1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
# -*- coding: utf-8 -*-
# Description: cpufreq netdata python.d module
# Author: Pawel Krupa (paulfantom)
# Author: Steven Noonan (tycho)
# SPDX-License-Identifier: GPL-3.0-or-later
import glob
import os
from bases.FrameworkServices.SimpleService import SimpleService
# default module values (can be overridden per job in `config`)
# update_every = 2
ORDER = ['cpufreq']
CHARTS = {
'cpufreq': {
'options': [None, 'CPU Clock', 'MHz', 'cpufreq', 'cpufreq.cpufreq', 'line'],
'lines': [
# lines are created dynamically in `check()` method
]
}
}
class Service(SimpleService):
def __init__(self, configuration=None, name=None):
prefix = os.getenv('NETDATA_HOST_PREFIX', "")
if prefix.endswith('/'):
prefix = prefix[:-1]
self.sys_dir = prefix + "/sys/devices"
SimpleService.__init__(self, configuration=configuration, name=name)
self.order = ORDER
self.definitions = CHARTS
self.fake_name = 'cpu'
self.assignment = {}
self.accurate_exists = True
self.accurate_last = {}
def _get_data(self):
data = {}
if self.accurate_exists:
accurate_ok = True
for name, paths in self.assignment.items():
last = self.accurate_last[name]
current = {}
deltas = {}
ticks_since_last = 0
for line in open(paths['accurate'], 'r'):
line = list(map(int, line.split()))
current[line[0]] = line[1]
ticks = line[1] - last.get(line[0], 0)
ticks_since_last += ticks
deltas[line[0]] = line[1] - last.get(line[0], 0)
avg_freq = 0
if ticks_since_last != 0:
for frequency, ticks in deltas.items():
avg_freq += frequency * ticks
avg_freq /= ticks_since_last
data[name] = avg_freq
self.accurate_last[name] = current
if avg_freq == 0 or ticks_since_last == 0:
# Delta is either too large or nonexistent, fall back to
# less accurate reading. This can happen if we switch
# to/from the 'schedutil' governor, which doesn't report
# stats.
accurate_ok = False
if accurate_ok:
return data
for name, paths in self.assignment.items():
data[name] = open(paths['inaccurate'], 'r').read()
return data
def check(self):
try:
self.sys_dir = str(self.configuration['sys_dir'])
except (KeyError, TypeError):
self.error("No path specified. Using: '" + self.sys_dir + "'")
for path in glob.glob(self.sys_dir + '/system/cpu/cpu*/cpufreq/stats/time_in_state'):
path_elem = path.split('/')
cpu = path_elem[-4]
if cpu not in self.assignment:
self.assignment[cpu] = {}
self.assignment[cpu]['accurate'] = path
self.accurate_last[cpu] = {}
if not self.assignment:
self.accurate_exists = False
for path in glob.glob(self.sys_dir + '/system/cpu/cpu*/cpufreq/scaling_cur_freq'):
path_elem = path.split('/')
cpu = path_elem[-3]
if cpu not in self.assignment:
self.assignment[cpu] = {}
self.assignment[cpu]['inaccurate'] = path
if not self.assignment:
self.error("couldn't find a method to read cpufreq statistics")
return False
for name in sorted(self.assignment, key=lambda v: int(v[3:])):
self.definitions[ORDER[0]]['lines'].append([name, name, 'absolute', 1, 1000])
return True
|
