glances.plugins.cpu.CpuPlugin.update_local() - Code Metrics - Inspection of "Merge branch 'issue3169' into develop" - nicolargo/glances - Measure and Improve Code Quality continuously with Scrutinizer

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Push — develop ( 1e7e0c...5f3110 )

by Nicolas

created 2025-05-02 09:17 UTC

glances.plugins.cpu.CpuPlugin.update_local() A

↳ Parent: glances.plugins.cpu

Complexity

Conditions

Size

Total Lines	49
Code Lines	10

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	1
eloc	10
nop	1
dl	0
loc	49
rs	9.9
c	0
b	0
f	0

#
# This file is part of Glances.
#
# SPDX-FileCopyrightText: 2022 Nicolas Hennion <[email protected]>
#
# SPDX-License-Identifier: LGPL-3.0-only
#

"""CPU plugin."""

import psutil

from glances.cpu_percent import cpu_percent
from glances.globals import LINUX, SUNOS, WINDOWS, iterkeys
from glances.plugins.core import CorePlugin
from glances.plugins.plugin.model import GlancesPluginModel

# Fields description
# description: human readable description
# short_name: shortname to use un UI
# unit: unit type
# rate: if True then compute and add *_gauge and *_rate_per_is fields
# min_symbol: Auto unit should be used if value > than 1 'X' (K, M, G)...
fields_description = {
    'total': {'description': 'Sum of all CPU percentages (except idle).', 'unit': 'percent'},
    'system': {
        'description': 'Percent time spent in kernel space. System CPU time is the \
time spent running code in the Operating System kernel.',
        'unit': 'percent',
    },
    'user': {
        'description': 'CPU percent time spent in user space. \
User CPU time is the time spent on the processor running your program\'s code (or code in libraries).',
        'unit': 'percent',
    },
    'iowait': {
        'description': '*(Linux)*: percent time spent by the CPU waiting for I/O \
operations to complete.',
        'unit': 'percent',
    },
    'dpc': {
        'description': '*(Windows)*: time spent servicing deferred procedure calls (DPCs)',
        'unit': 'percent',
    },
    'idle': {
        'description': 'percent of CPU used by any program. Every program or task \
that runs on a computer system occupies a certain amount of processing \
time on the CPU. If the CPU has completed all tasks it is idle.',
        'unit': 'percent',
    },
    'irq': {
        'description': '*(Linux and BSD)*: percent time spent servicing/handling \
hardware/software interrupts. Time servicing interrupts (hardware + \
software).',
        'unit': 'percent',
    },
    'nice': {
        'description': '*(Unix)*: percent time occupied by user level processes with \
a positive nice value. The time the CPU has spent running users\' \
processes that have been *niced*.',
        'unit': 'percent',
    },
    'steal': {
        'description': '*(Linux)*: percentage of time a virtual CPU waits for a real \
CPU while the hypervisor is servicing another virtual processor.',
        'unit': 'percent',
    },
    'guest': {
        'description': '*(Linux)*: time spent running a virtual CPU for guest operating \
systems under the control of the Linux kernel.',
        'unit': 'percent',
    },
    'ctx_switches': {
        'description': 'number of context switches (voluntary + involuntary) per \
second. A context switch is a procedure that a computer\'s CPU (central \
processing unit) follows to change from one task (or process) to \
another while ensuring that the tasks do not conflict.',
        'unit': 'number',
        'rate': True,
        'min_symbol': 'K',
        'short_name': 'ctx_sw',
    },
    'interrupts': {
        'description': 'number of interrupts per second.',
        'unit': 'number',
        'rate': True,
        'min_symbol': 'K',
        'short_name': 'inter',
    },
    'soft_interrupts': {
        'description': 'number of software interrupts per second. Always set to \
0 on Windows and SunOS.',
        'unit': 'number',
        'rate': True,
        'min_symbol': 'K',
        'short_name': 'sw_int',
    },
    'syscalls': {
        'description': 'number of system calls per second. Always 0 on Linux OS.',
        'unit': 'number',
        'rate': True,
        'min_symbol': 'K',
        'short_name': 'sys_call',
    },
    'cpucore': {'description': 'Total number of CPU core.', 'unit': 'number'},
    'time_since_update': {'description': 'Number of seconds since last update.', 'unit': 'seconds'},
}

# SNMP OID
# percentage of user CPU time: .1.3.6.1.4.1.2021.11.9.0
# percentages of system CPU time: .1.3.6.1.4.1.2021.11.10.0
# percentages of idle CPU time: .1.3.6.1.4.1.2021.11.11.0
snmp_oid = {
    'default': {
        'user': '1.3.6.1.4.1.2021.11.9.0',
        'system': '1.3.6.1.4.1.2021.11.10.0',
        'idle': '1.3.6.1.4.1.2021.11.11.0',
    },
    'windows': {'percent': '1.3.6.1.2.1.25.3.3.1.2'},
    'esxi': {'percent': '1.3.6.1.2.1.25.3.3.1.2'},
    'netapp': {
        'system': '1.3.6.1.4.1.789.1.2.1.3.0',
        'idle': '1.3.6.1.4.1.789.1.2.1.5.0',
        'cpucore': '1.3.6.1.4.1.789.1.2.1.6.0',
    },
}

# Define the history items list
# - 'name' define the stat identifier
# - 'y_unit' define the Y label
items_history_list = [
    {'name': 'user', 'description': 'User CPU usage', 'y_unit': '%'},
    {'name': 'system', 'description': 'System CPU usage', 'y_unit': '%'},
]


class CpuPlugin(GlancesPluginModel):
    """Glances CPU plugin.

    'stats' is a dictionary that contains the system-wide CPU utilization as a
    percentage.
    """

    def __init__(self, args=None, config=None):
        """Init the CPU plugin."""
        super().__init__(
            args=args, config=config, items_history_list=items_history_list, fields_description=fields_description
        )

        # We want to display the stat in the curse interface
        self.display_curse = True

        # Call CorePlugin in order to display the core number
        try:
            self.nb_log_core = CorePlugin(args=self.args).update()["log"]
        except Exception:
            self.nb_log_core = 1

    @GlancesPluginModel._check_decorator
    @GlancesPluginModel._log_result_decorator
    def update(self):
        """Update CPU stats using the input method."""
        # Grab stats into self.stats
        if self.input_method == 'local':
            stats = self.update_local()
        elif self.input_method == 'snmp':
            stats = self.update_snmp()

        # Update the stats
        self.stats = stats


        return self.stats

    @GlancesPluginModel._manage_rate
    def update_local(self):
        """Update CPU stats using psutil."""
        # Grab CPU stats using psutil's cpu_percent and cpu_times_percent
        # Get all possible values for CPU stats: user, system, idle,
        # nice (UNIX), iowait (Linux), irq (Linux, FreeBSD), steal (Linux 2.6.11+)
        # The following stats are returned by the API but not displayed in the UI:
        # softirq (Linux), guest (Linux 2.6.24+), guest_nice (Linux 3.2.0+)

        # Init new stats
        stats = self.get_init_value()

        stats['total'] = cpu_percent.get_cpu()

        # Standards stats
        # - user: time spent by normal processes executing in user mode; on Linux this also includes guest time
        # - system: time spent by processes executing in kernel mode
        # - idle: time spent doing nothing
        # - nice (UNIX): time spent by niced (prioritized) processes executing in user mode
        #                on Linux this also includes guest_nice time
        # - iowait (Linux): time spent waiting for I/O to complete.
        #                   This is not accounted in idle time counter.
        # - irq (Linux, BSD): time spent for servicing hardware interrupts
        # - softirq (Linux): time spent for servicing software interrupts
        # - steal (Linux 2.6.11+): time spent by other operating systems running in a virtualized environment
        # - guest (Linux 2.6.24+): time spent running a virtual CPU for guest operating systems under
        #                          the control of the Linux kernel
        # - guest_nice (Linux 3.2.0+): time spent running a niced guest (virtual CPU for guest operating systems
        #                              under the control of the Linux kernel)
        # - interrupt (Windows): time spent for servicing hardware interrupts ( similar to “irq” on UNIX)
        # - dpc (Windows): time spent servicing deferred procedure calls (DPCs)
        cpu_times_percent = psutil.cpu_times_percent(interval=0.0)
        # Filter stats to keep only the fields we want (define in fields_description)
        # It will also convert psutil objects to a standard Python dict
        stats.update(self.filter_stats(cpu_times_percent))

        # Additional CPU stats (number of events not as a %; psutil>=4.1.0)
        # - ctx_switches: number of context switches (voluntary + involuntary) since boot.
        # - interrupts: number of interrupts since boot.
        # - soft_interrupts: number of software interrupts since boot. Always set to 0 on Windows and SunOS.
        # - syscalls: number of system calls since boot. Always set to 0 on Linux.
        cpu_stats = psutil.cpu_stats()
        # Filter stats to keep only the fields we want (define in fields_description)
        # It will also convert psutil objects to a standard Python dict
        stats.update(self.filter_stats(cpu_stats))
        # Core number is needed to compute the CTX switch limit
        stats['cpucore'] = self.nb_log_core

        return stats

    def update_snmp(self):
        """Update CPU stats using SNMP."""

        # Init new stats
        stats = self.get_init_value()

        # Update stats using SNMP
        if self.short_system_name in ('windows', 'esxi'):
            # Windows or VMWare ESXi
            # You can find the CPU utilization of windows system by querying the oid
            # Give also the number of core (number of element in the table)
            try:
                cpu_stats = self.get_stats_snmp(snmp_oid=snmp_oid[self.short_system_name], bulk=True)
            except KeyError:
                self.reset()

            # Iter through CPU and compute the idle CPU stats
            stats['nb_log_core'] = 0
            stats['idle'] = 0
            for c in cpu_stats:
                if c.startswith('percent'):
                    stats['idle'] += float(cpu_stats['percent.3'])
                    stats['nb_log_core'] += 1
            if stats['nb_log_core'] > 0:
                stats['idle'] = stats['idle'] / stats['nb_log_core']
            stats['idle'] = 100 - stats['idle']
            stats['total'] = 100 - stats['idle']

        else:
            # Default behavior
            try:
                stats = self.get_stats_snmp(snmp_oid=snmp_oid[self.short_system_name])
            except KeyError:
                stats = self.get_stats_snmp(snmp_oid=snmp_oid['default'])

            if stats['idle'] == '':
                self.reset()
                return self.stats

            # Convert SNMP stats to float
            for key in iterkeys(stats):
                stats[key] = float(stats[key])
            stats['total'] = 100 - stats['idle']

        return stats

    def update_views(self):
        """Update stats views."""
        # Call the father's method
        super().update_views()

        # Add specifics information
        # Alert and log
        for key in ['user', 'system', 'iowait', 'dpc', 'total']:
            if key in self.stats:
                self.views[key]['decoration'] = self.get_alert_log(self.stats[key], header=key)
        # Alert only
        for key in ['steal']:
            if key in self.stats:
                self.views[key]['decoration'] = self.get_alert(self.stats[key], header=key)
        # Alert only but depend on Core number
        for key in ['ctx_switches']:
            # Skip alert if no timespan to measure
            if self.stats.get('time_since_update', 0) == 0:
                continue
            if key in self.stats:
                self.views[key]['decoration'] = self.get_alert(
                    self.stats[key], maximum=100 * self.stats['cpucore'], header=key
                )
        # Optional
        for key in [
            'nice',
            'irq',
            'idle',
            'steal',
            'guest',
            'ctx_switches',
            'interrupts',
            'soft_interrupts',
            'syscalls',
        ]:
            if key in self.stats:
                self.views[key]['optional'] = True

    def msg_curse(self, args=None, max_width=None):
        """Return the list to display in the UI."""
        # Init the return message
        ret = []

        # Only process if stats exist and plugin not disable
        if not self.stats or self.args.percpu or self.is_disabled():
            return ret

        # Some tag to enable/disable stats (example: idle_tag triggered on Windows OS)
        idle_tag = 'user' not in self.stats

        # First line
        # Total + (idle) + ctx_sw
        msg = '{:8}'.format('CPU')
        ret.append(self.curse_add_line(msg, "TITLE"))
        # Total CPU usage
        msg = '{:5.1f}%'.format(self.stats['total'])
        ret.append(self.curse_add_line(msg, self.get_views(key='total', option='decoration')))
        # Idle CPU
        if 'idle' in self.stats and not idle_tag:
            msg = '  {:8}'.format('idle')
            ret.append(self.curse_add_line(msg, optional=self.get_views(key='idle', option='optional')))
            msg = '{:4.1f}%'.format(self.stats['idle'])
            ret.append(self.curse_add_line(msg, optional=self.get_views(key='idle', option='optional')))
        # ctx_switches
        # On WINDOWS/SUNOS the ctx_switches is displayed in the third line
        if not WINDOWS and not SUNOS:
            ret.extend(self.curse_add_stat('ctx_switches', width=15, header='  '))

        # Second line
        # user|idle + irq + interrupts
        ret.append(self.curse_new_line())
        # User CPU
        if not idle_tag:
            ret.extend(self.curse_add_stat('user', width=15))
        elif 'idle' in self.stats:
            ret.extend(self.curse_add_stat('idle', width=15))
        # IRQ CPU
        ret.extend(self.curse_add_stat('irq', width=14, header='  '))
        # interrupts
        ret.extend(self.curse_add_stat('interrupts', width=15, header='  '))

        # Third line
        # system|core + nice + sw_int
        ret.append(self.curse_new_line())
        # System CPU
        if not idle_tag:
            ret.extend(self.curse_add_stat('system', width=15))
        else:
            ret.extend(self.curse_add_stat('core', width=15))
        # Nice CPU
        ret.extend(self.curse_add_stat('nice', width=14, header='  '))
        # soft_interrupts
        if not WINDOWS and not SUNOS:
            ret.extend(self.curse_add_stat('soft_interrupts', width=15, header='  '))
        else:
            ret.extend(self.curse_add_stat('ctx_switches', width=15, header='  '))

        # Fourth line
        # iowait + steal + (syscalls or guest)
        ret.append(self.curse_new_line())
        if 'iowait' in self.stats:
            # IOWait CPU
            ret.extend(self.curse_add_stat('iowait', width=15))
        elif 'dpc' in self.stats:
            # DPC CPU
            ret.extend(self.curse_add_stat('dpc', width=15))
        # Steal CPU usage
        ret.extend(self.curse_add_stat('steal', width=14, header='  '))
        if not LINUX:
            # syscalls: number of system calls since boot. Always set to 0 on Linux. (do not display)
            ret.extend(self.curse_add_stat('syscalls', width=15, header='  '))
        else:
            # So instead on Linux we display the guest CPU usage (see #2667)
            # guest: time spent running a virtual CPU for guest operating systems under
            ret.extend(self.curse_add_stat('guest', width=14, header='  '))

        # Return the message with decoration
        return ret


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 plugin."""
10
11			import psutil
12
13			from glances.cpu_percent import cpu_percent
14			from glances.globals import LINUX, SUNOS, WINDOWS, iterkeys
15			from glances.plugins.core import CorePlugin
16			from glances.plugins.plugin.model import GlancesPluginModel
17
18			# Fields description
19			# description: human readable description
20			# short_name: shortname to use un UI
21			# unit: unit type
22			# rate: if True then compute and add _gauge and _rate_per_is fields
23			# min_symbol: Auto unit should be used if value > than 1 'X' (K, M, G)...
24			fields_description = {
25			'total': {'description': 'Sum of all CPU percentages (except idle).', 'unit': 'percent'},
26			'system': {
27			'description': 'Percent time spent in kernel space. System CPU time is the \
28			time spent running code in the Operating System kernel.',
29			'unit': 'percent',
30			},
31			'user': {
32			'description': 'CPU percent time spent in user space. \
33			User CPU time is the time spent on the processor running your program\'s code (or code in libraries).',
34			'unit': 'percent',
35			},
36			'iowait': {
37			'description': '(Linux): percent time spent by the CPU waiting for I/O \
38			operations to complete.',
39			'unit': 'percent',
40			},
41			'dpc': {
42			'description': '(Windows): time spent servicing deferred procedure calls (DPCs)',
43			'unit': 'percent',
44			},
45			'idle': {
46			'description': 'percent of CPU used by any program. Every program or task \
47			that runs on a computer system occupies a certain amount of processing \
48			time on the CPU. If the CPU has completed all tasks it is idle.',
49			'unit': 'percent',
50			},
51			'irq': {
52			'description': '(Linux and BSD): percent time spent servicing/handling \
53			hardware/software interrupts. Time servicing interrupts (hardware + \
54			software).',
55			'unit': 'percent',
56			},
57			'nice': {
58			'description': '(Unix): percent time occupied by user level processes with \
59			a positive nice value. The time the CPU has spent running users\' \
60			processes that have been niced.',
61			'unit': 'percent',
62			},
63			'steal': {
64			'description': '(Linux): percentage of time a virtual CPU waits for a real \
65			CPU while the hypervisor is servicing another virtual processor.',
66			'unit': 'percent',
67			},
68			'guest': {
69			'description': '(Linux): time spent running a virtual CPU for guest operating \
70			systems under the control of the Linux kernel.',
71			'unit': 'percent',
72			},
73			'ctx_switches': {
74			'description': 'number of context switches (voluntary + involuntary) per \
75			second. A context switch is a procedure that a computer\'s CPU (central \
76			processing unit) follows to change from one task (or process) to \
77			another while ensuring that the tasks do not conflict.',
78			'unit': 'number',
79			'rate': True,
80			'min_symbol': 'K',
81			'short_name': 'ctx_sw',
82			},
83			'interrupts': {
84			'description': 'number of interrupts per second.',
85			'unit': 'number',
86			'rate': True,
87			'min_symbol': 'K',
88			'short_name': 'inter',
89			},
90			'soft_interrupts': {
91			'description': 'number of software interrupts per second. Always set to \
92			0 on Windows and SunOS.',
93			'unit': 'number',
94			'rate': True,
95			'min_symbol': 'K',
96			'short_name': 'sw_int',
97			},
98			'syscalls': {
99			'description': 'number of system calls per second. Always 0 on Linux OS.',
100			'unit': 'number',
101			'rate': True,
102			'min_symbol': 'K',
103			'short_name': 'sys_call',
104			},
105			'cpucore': {'description': 'Total number of CPU core.', 'unit': 'number'},
106			'time_since_update': {'description': 'Number of seconds since last update.', 'unit': 'seconds'},
107			}
108
109			# SNMP OID
110			# percentage of user CPU time: .1.3.6.1.4.1.2021.11.9.0
111			# percentages of system CPU time: .1.3.6.1.4.1.2021.11.10.0
112			# percentages of idle CPU time: .1.3.6.1.4.1.2021.11.11.0
113			snmp_oid = {
114			'default': {
115			'user': '1.3.6.1.4.1.2021.11.9.0',
116			'system': '1.3.6.1.4.1.2021.11.10.0',
117			'idle': '1.3.6.1.4.1.2021.11.11.0',
118			},
119			'windows': {'percent': '1.3.6.1.2.1.25.3.3.1.2'},
120			'esxi': {'percent': '1.3.6.1.2.1.25.3.3.1.2'},
121			'netapp': {
122			'system': '1.3.6.1.4.1.789.1.2.1.3.0',
123			'idle': '1.3.6.1.4.1.789.1.2.1.5.0',
124			'cpucore': '1.3.6.1.4.1.789.1.2.1.6.0',
125			},
126			}
127
128			# Define the history items list
129			# - 'name' define the stat identifier
130			# - 'y_unit' define the Y label
131			items_history_list = [
132			{'name': 'user', 'description': 'User CPU usage', 'y_unit': '%'},
133			{'name': 'system', 'description': 'System CPU usage', 'y_unit': '%'},
134			]
135
136
137			class CpuPlugin(GlancesPluginModel):
138			"""Glances CPU plugin.
139
140			'stats' is a dictionary that contains the system-wide CPU utilization as a
141			percentage.
142			"""
143
144			def __init__(self, args=None, config=None):
145			"""Init the CPU plugin."""
146			super().__init__(
147			args=args, config=config, items_history_list=items_history_list, fields_description=fields_description
148			)
149
150			# We want to display the stat in the curse interface
151			self.display_curse = True
152
153			# Call CorePlugin in order to display the core number
154			try:
155			self.nb_log_core = CorePlugin(args=self.args).update()["log"]
156			except Exception:
157			self.nb_log_core = 1
158
159			@GlancesPluginModel._check_decorator
160			@GlancesPluginModel._log_result_decorator
161			def update(self):
162			"""Update CPU stats using the input method."""
163			# Grab stats into self.stats
164			if self.input_method == 'local':
165			stats = self.update_local()
166			elif self.input_method == 'snmp':
167			stats = self.update_snmp()
168
169			# Update the stats
170			self.stats = stats
			0 ignored issues – show introduced 2024-06-23 08:27 UTC by Report Bug Copy Issue Report The variable `stats` does not seem to be defined for all execution paths. Loading history...
171
172			return self.stats
173
174			@GlancesPluginModel._manage_rate
175			def update_local(self):
176			"""Update CPU stats using psutil."""
177			# Grab CPU stats using psutil's cpu_percent and cpu_times_percent
178			# Get all possible values for CPU stats: user, system, idle,
179			# nice (UNIX), iowait (Linux), irq (Linux, FreeBSD), steal (Linux 2.6.11+)
180			# The following stats are returned by the API but not displayed in the UI:
181			# softirq (Linux), guest (Linux 2.6.24+), guest_nice (Linux 3.2.0+)
182
183			# Init new stats
184			stats = self.get_init_value()
185
186			stats['total'] = cpu_percent.get_cpu()
187
188			# Standards stats
189			# - user: time spent by normal processes executing in user mode; on Linux this also includes guest time
190			# - system: time spent by processes executing in kernel mode
191			# - idle: time spent doing nothing
192			# - nice (UNIX): time spent by niced (prioritized) processes executing in user mode
193			# on Linux this also includes guest_nice time
194			# - iowait (Linux): time spent waiting for I/O to complete.
195			# This is not accounted in idle time counter.
196			# - irq (Linux, BSD): time spent for servicing hardware interrupts
197			# - softirq (Linux): time spent for servicing software interrupts
198			# - steal (Linux 2.6.11+): time spent by other operating systems running in a virtualized environment
199			# - guest (Linux 2.6.24+): time spent running a virtual CPU for guest operating systems under
200			# the control of the Linux kernel
201			# - guest_nice (Linux 3.2.0+): time spent running a niced guest (virtual CPU for guest operating systems
202			# under the control of the Linux kernel)
203			# - interrupt (Windows): time spent for servicing hardware interrupts ( similar to “irq” on UNIX)
204			# - dpc (Windows): time spent servicing deferred procedure calls (DPCs)
205			cpu_times_percent = psutil.cpu_times_percent(interval=0.0)
206			# Filter stats to keep only the fields we want (define in fields_description)
207			# It will also convert psutil objects to a standard Python dict
208			stats.update(self.filter_stats(cpu_times_percent))
209
210			# Additional CPU stats (number of events not as a %; psutil>=4.1.0)
211			# - ctx_switches: number of context switches (voluntary + involuntary) since boot.
212			# - interrupts: number of interrupts since boot.
213			# - soft_interrupts: number of software interrupts since boot. Always set to 0 on Windows and SunOS.
214			# - syscalls: number of system calls since boot. Always set to 0 on Linux.
215			cpu_stats = psutil.cpu_stats()
216			# Filter stats to keep only the fields we want (define in fields_description)
217			# It will also convert psutil objects to a standard Python dict
218			stats.update(self.filter_stats(cpu_stats))
219			# Core number is needed to compute the CTX switch limit
220			stats['cpucore'] = self.nb_log_core
221
222			return stats
223
224			def update_snmp(self):
225			"""Update CPU stats using SNMP."""
226
227			# Init new stats
228			stats = self.get_init_value()
229
230			# Update stats using SNMP
231			if self.short_system_name in ('windows', 'esxi'):
232			# Windows or VMWare ESXi
233			# You can find the CPU utilization of windows system by querying the oid
234			# Give also the number of core (number of element in the table)
235			try:
236			cpu_stats = self.get_stats_snmp(snmp_oid=snmp_oid[self.short_system_name], bulk=True)
237			except KeyError:
238			self.reset()
239
240			# Iter through CPU and compute the idle CPU stats
241			stats['nb_log_core'] = 0
242			stats['idle'] = 0
243			for c in cpu_stats:
244			if c.startswith('percent'):
245			stats['idle'] += float(cpu_stats['percent.3'])
246			stats['nb_log_core'] += 1
247			if stats['nb_log_core'] > 0:
248			stats['idle'] = stats['idle'] / stats['nb_log_core']
249			stats['idle'] = 100 - stats['idle']
250			stats['total'] = 100 - stats['idle']
251
252			else:
253			# Default behavior
254			try:
255			stats = self.get_stats_snmp(snmp_oid=snmp_oid[self.short_system_name])
256			except KeyError:
257			stats = self.get_stats_snmp(snmp_oid=snmp_oid['default'])
258
259			if stats['idle'] == '':
260			self.reset()
261			return self.stats
262
263			# Convert SNMP stats to float
264			for key in iterkeys(stats):
265			stats[key] = float(stats[key])
266			stats['total'] = 100 - stats['idle']
267
268			return stats
269
270			def update_views(self):
271			"""Update stats views."""
272			# Call the father's method
273			super().update_views()
274
275			# Add specifics information
276			# Alert and log
277			for key in ['user', 'system', 'iowait', 'dpc', 'total']:
278			if key in self.stats:
279			self.views[key]['decoration'] = self.get_alert_log(self.stats[key], header=key)
280			# Alert only
281			for key in ['steal']:
282			if key in self.stats:
283			self.views[key]['decoration'] = self.get_alert(self.stats[key], header=key)
284			# Alert only but depend on Core number
285			for key in ['ctx_switches']:
286			# Skip alert if no timespan to measure
287			if self.stats.get('time_since_update', 0) == 0:
288			continue
289			if key in self.stats:
290			self.views[key]['decoration'] = self.get_alert(
291			self.stats[key], maximum=100 * self.stats['cpucore'], header=key
292			)
293			# Optional
294			for key in [
295			'nice',
296			'irq',
297			'idle',
298			'steal',
299			'guest',
300			'ctx_switches',
301			'interrupts',
302			'soft_interrupts',
303			'syscalls',
304			]:
305			if key in self.stats:
306			self.views[key]['optional'] = True
307
308			def msg_curse(self, args=None, max_width=None):
309			"""Return the list to display in the UI."""
310			# Init the return message
311			ret = []
312
313			# Only process if stats exist and plugin not disable
314			if not self.stats or self.args.percpu or self.is_disabled():
315			return ret
316
317			# Some tag to enable/disable stats (example: idle_tag triggered on Windows OS)
318			idle_tag = 'user' not in self.stats
319
320			# First line
321			# Total + (idle) + ctx_sw
322			msg = '{:8}'.format('CPU')
323			ret.append(self.curse_add_line(msg, "TITLE"))
324			# Total CPU usage
325			msg = '{:5.1f}%'.format(self.stats['total'])
326			ret.append(self.curse_add_line(msg, self.get_views(key='total', option='decoration')))
327			# Idle CPU
328			if 'idle' in self.stats and not idle_tag:
329			msg = ' {:8}'.format('idle')
330			ret.append(self.curse_add_line(msg, optional=self.get_views(key='idle', option='optional')))
331			msg = '{:4.1f}%'.format(self.stats['idle'])
332			ret.append(self.curse_add_line(msg, optional=self.get_views(key='idle', option='optional')))
333			# ctx_switches
334			# On WINDOWS/SUNOS the ctx_switches is displayed in the third line
335			if not WINDOWS and not SUNOS:
336			ret.extend(self.curse_add_stat('ctx_switches', width=15, header=' '))
337
338			# Second line
339			# user\|idle + irq + interrupts
340			ret.append(self.curse_new_line())
341			# User CPU
342			if not idle_tag:
343			ret.extend(self.curse_add_stat('user', width=15))
344			elif 'idle' in self.stats:
345			ret.extend(self.curse_add_stat('idle', width=15))
346			# IRQ CPU
347			ret.extend(self.curse_add_stat('irq', width=14, header=' '))
348			# interrupts
349			ret.extend(self.curse_add_stat('interrupts', width=15, header=' '))
350
351			# Third line
352			# system\|core + nice + sw_int
353			ret.append(self.curse_new_line())
354			# System CPU
355			if not idle_tag:
356			ret.extend(self.curse_add_stat('system', width=15))
357			else:
358			ret.extend(self.curse_add_stat('core', width=15))
359			# Nice CPU
360			ret.extend(self.curse_add_stat('nice', width=14, header=' '))
361			# soft_interrupts
362			if not WINDOWS and not SUNOS:
363			ret.extend(self.curse_add_stat('soft_interrupts', width=15, header=' '))
364			else:
365			ret.extend(self.curse_add_stat('ctx_switches', width=15, header=' '))
366
367			# Fourth line
368			# iowait + steal + (syscalls or guest)
369			ret.append(self.curse_new_line())
370			if 'iowait' in self.stats:
371			# IOWait CPU
372			ret.extend(self.curse_add_stat('iowait', width=15))
373			elif 'dpc' in self.stats:
374			# DPC CPU
375			ret.extend(self.curse_add_stat('dpc', width=15))
376			# Steal CPU usage
377			ret.extend(self.curse_add_stat('steal', width=14, header=' '))
378			if not LINUX:
379			# syscalls: number of system calls since boot. Always set to 0 on Linux. (do not display)
380			ret.extend(self.curse_add_stat('syscalls', width=15, header=' '))
381			else:
382			# So instead on Linux we display the guest CPU usage (see #2667)
383			# guest: time spent running a virtual CPU for guest operating systems under
384			ret.extend(self.curse_add_stat('guest', width=14, header=' '))
385
386			# Return the message with decoration
387			return ret
388

nicolargo / glances

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glances.plugins.cpu.CpuPlugin.update_local() A

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