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# -*- coding: utf-8 -*-
#
# This file is part of Glances.
#
# Copyright (C) 2015 Nicolargo <nicolas@nicolargo.com>
#
# Glances is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Glances 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""Per-CPU plugin."""
from glances.plugins.glances_plugin import GlancesPlugin
import psutil
class Plugin(GlancesPlugin):
"""Glances per-CPU plugin.
'stats' is a list of dictionaries that contain the utilization percentages
for each CPU.
"""
def __init__(self, args=None):
"""Init the plugin."""
GlancesPlugin.__init__(self, args=args)
# We want to display the stat in the curse interface
self.display_curse = True
# Init stats
self.reset()
def get_key(self):
"""Return the key of the list."""
return 'cpu_number'
def reset(self):
"""Reset/init the stats."""
self.stats = []
def update(self):
"""Update per-CPU stats using the input method."""
# Reset stats
self.reset()
# Grab per-CPU stats using psutil's cpu_percent(percpu=True) and
# cpu_times_percent(percpu=True) methods
if self.input_method == 'local':
percpu_times_percent = psutil.cpu_times_percent(interval=0.0, percpu=True)
for cpu_number, cputimes in enumerate(percpu_times_percent):
cpu = {'key': self.get_key(),
'cpu_number': cpu_number,
'total': round(100 - cputimes.idle, 1),
'user': cputimes.user,
'system': cputimes.system,
'idle': cputimes.idle}
# The following stats are for API purposes only
if hasattr(cputimes, 'nice'):
cpu['nice'] = cputimes.nice
if hasattr(cputimes, 'iowait'):
cpu['iowait'] = cputimes.iowait
if hasattr(cputimes, 'irq'):
cpu['irq'] = cputimes.irq
if hasattr(cputimes, 'softirq'):
cpu['softirq'] = cputimes.softirq
if hasattr(cputimes, 'steal'):
cpu['steal'] = cputimes.steal
if hasattr(cputimes, 'guest'):
cpu['guest'] = cputimes.guest
if hasattr(cputimes, 'guest_nice'):
cpu['guest_nice'] = cputimes.guest_nice
self.stats.append(cpu)
else:
# Update stats using SNMP
pass
return self.stats
def msg_curse(self, args=None):
"""Return the dict to display in the curse interface."""
# Init the return message
ret = []
# No per CPU stat ? Exit...
if not self.stats:
msg = 'PER CPU not available'
ret.append(self.curse_add_line(msg, "TITLE"))
return ret
# Build the string message
# Header
msg = '{0:8}'.format('PER CPU')
ret.append(self.curse_add_line(msg, "TITLE"))
# Total per-CPU usage
for cpu in self.stats:
msg = '{0:>6}%'.format(cpu['total'])
ret.append(self.curse_add_line(msg))
# User per-CPU
ret.append(self.curse_new_line())
msg = '{0:8}'.format('user:')
ret.append(self.curse_add_line(msg))
for cpu in self.stats:
msg = '{0:>6}%'.format(cpu['user'])
ret.append(self.curse_add_line(msg, self.get_alert(cpu['user'], header="user")))
# System per-CPU
ret.append(self.curse_new_line())
msg = '{0:8}'.format('system:')
ret.append(self.curse_add_line(msg))
for cpu in self.stats:
msg = '{0:>6}%'.format(cpu['system'])
ret.append(self.curse_add_line(msg, self.get_alert(cpu['system'], header="system")))
# Idle per-CPU
ret.append(self.curse_new_line())
msg = '{0:8}'.format('idle:')
ret.append(self.curse_add_line(msg))
for cpu in self.stats:
msg = '{0:>6}%'.format(cpu['idle'])
ret.append(self.curse_add_line(msg))
# Return the message with decoration
return ret
|
