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glances_processlist.py
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glances_processlist.py
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# -*- coding: utf-8 -*-
#
# This file is part of Glances.
#
# Copyright (C) 2017 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/>.
"""Process list plugin."""
import os
import shlex
from datetime import timedelta
from glances.compat import iteritems
from glances.globals import WINDOWS
from glances.logger import logger
from glances.processes import glances_processes, sort_stats
from glances.plugins.glances_core import Plugin as CorePlugin
from glances.plugins.glances_plugin import GlancesPlugin
def convert_timedelta(delta):
"""Convert timedelta to human-readable time."""
days, total_seconds = delta.days, delta.seconds
hours = days * 24 + total_seconds // 3600
minutes = (total_seconds % 3600) // 60
seconds = str(total_seconds % 60).zfill(2)
microseconds = str(delta.microseconds)[:2].zfill(2)
return hours, minutes, seconds, microseconds
def split_cmdline(cmdline):
"""Return path, cmd and arguments for a process cmdline."""
cmdline_split = shlex.split(cmdline[0])
path, cmd = os.path.split(cmdline_split[0])
arguments = ' '.join(cmdline_split[1:])
return path, cmd, arguments
class Plugin(GlancesPlugin):
"""Glances' processes plugin.
stats is a list
"""
def __init__(self, args=None):
"""Init the plugin."""
super(Plugin, self).__init__(args=args)
# We want to display the stat in the curse interface
self.display_curse = True
# Trying to display proc time
self.tag_proc_time = True
# Call CorePlugin to get the core number (needed when not in IRIX mode / Solaris mode)
try:
self.nb_log_core = CorePlugin(args=self.args).update()["log"]
except Exception:
self.nb_log_core = 0
# Get the max values (dict)
self.max_values = glances_processes.max_values()
# Get the maximum PID number
# Use to optimize space (see https://github.com/nicolargo/glances/issues/959)
self.pid_max = glances_processes.pid_max
# Note: 'glances_processes' is already init in the processes.py script
def get_key(self):
"""Return the key of the list."""
return 'pid'
def reset(self):
"""Reset/init the stats."""
self.stats = []
def update(self):
"""Update processes stats using the input method."""
# Reset stats
self.reset()
if self.input_method == 'local':
# Update stats using the standard system lib
# Note: Update is done in the processcount plugin
# Just return the processes list
if glances_processes.is_tree_enabled():
self.stats = glances_processes.gettree()
else:
self.stats = glances_processes.getlist()
# Get the max values (dict)
self.max_values = glances_processes.max_values()
elif self.input_method == 'snmp':
# No SNMP grab for processes
pass
return self.stats
def get_process_tree_curses_data(self, node, args, first_level=True, max_node_count=None):
"""Get curses data to display for a process tree."""
ret = []
node_count = 0
if not node.is_root and ((max_node_count is None) or (max_node_count > 0)):
node_data = self.get_process_curses_data(node.stats, False, args)
node_count += 1
ret.extend(node_data)
for child in node.iter_children():
# stop if we have enough nodes to display
if max_node_count is not None and node_count >= max_node_count:
break
if max_node_count is None:
children_max_node_count = None
else:
children_max_node_count = max_node_count - node_count
child_data = self.get_process_tree_curses_data(child,
args,
first_level=node.is_root,
max_node_count=children_max_node_count)
if max_node_count is None:
node_count += len(child)
else:
node_count += min(children_max_node_count, len(child))
if not node.is_root:
child_data = self.add_tree_decoration(child_data, child is node.children[-1], first_level)
ret.extend(child_data)
return ret
def add_tree_decoration(self, child_data, is_last_child, first_level):
"""Add tree curses decoration and indentation to a subtree."""
# find process command indices in messages
pos = []
for i, m in enumerate(child_data):
if m.get("_tree_decoration", False):
del m["_tree_decoration"]
pos.append(i)
# add new curses items for tree decoration
new_child_data = []
new_pos = []
for i, m in enumerate(child_data):
if i in pos:
new_pos.append(len(new_child_data))
new_child_data.append(self.curse_add_line(""))
new_child_data[-1]["_tree_decoration"] = True
new_child_data.append(m)
child_data = new_child_data
pos = new_pos
if pos:
# draw node prefix
if is_last_child:
prefix = "└─"
else:
prefix = "├─"
child_data[pos[0]]["msg"] = prefix
# add indentation
for i in pos:
spacing = 2
if first_level:
spacing = 1
elif is_last_child and (i is not pos[0]):
# compensate indentation for missing '│' char
spacing = 3
child_data[i]["msg"] = "%s%s" % (" " * spacing, child_data[i]["msg"])
if not is_last_child:
# add '│' tree decoration
for i in pos[1:]:
old_str = child_data[i]["msg"]
if first_level:
child_data[i]["msg"] = " │" + old_str[2:]
else:
child_data[i]["msg"] = old_str[:2] + "│" + old_str[3:]
return child_data
def get_process_curses_data(self, p, first, args):
"""Get curses data to display for a process.
- p is the process to display
- first is a tag=True if the process is the first on the list
"""
ret = [self.curse_new_line()]
# CPU
if 'cpu_percent' in p and p['cpu_percent'] is not None and p['cpu_percent'] != '':
if args.disable_irix and self.nb_log_core != 0:
msg = '{:>6.1f}'.format(p['cpu_percent'] / float(self.nb_log_core))
else:
msg = '{:>6.1f}'.format(p['cpu_percent'])
alert = self.get_alert(p['cpu_percent'],
highlight_zero=False,
is_max=(p['cpu_percent'] == self.max_values['cpu_percent']),
header="cpu")
ret.append(self.curse_add_line(msg, alert))
else:
msg = '{:>6}'.format('?')
ret.append(self.curse_add_line(msg))
# MEM
if 'memory_percent' in p and p['memory_percent'] is not None and p['memory_percent'] != '':
msg = '{:>6.1f}'.format(p['memory_percent'])
alert = self.get_alert(p['memory_percent'],
highlight_zero=False,
is_max=(p['memory_percent'] == self.max_values['memory_percent']),
header="mem")
ret.append(self.curse_add_line(msg, alert))
else:
msg = '{:>6}'.format('?')
ret.append(self.curse_add_line(msg))
# VMS/RSS
if 'memory_info' in p and p['memory_info'] is not None and p['memory_info'] != '':
# VMS
msg = '{:>6}'.format(self.auto_unit(p['memory_info'][1], low_precision=False))
ret.append(self.curse_add_line(msg, optional=True))
# RSS
msg = '{:>6}'.format(self.auto_unit(p['memory_info'][0], low_precision=False))
ret.append(self.curse_add_line(msg, optional=True))
else:
msg = '{:>6}'.format('?')
ret.append(self.curse_add_line(msg))
ret.append(self.curse_add_line(msg))
# PID
msg = '{:>{width}}'.format(p['pid'], width=self.__max_pid_size() + 1)
ret.append(self.curse_add_line(msg))
# USER
if 'username' in p:
# docker internal users are displayed as ints only, therefore str()
# Correct issue #886 on Windows OS
msg = ' {:9}'.format(str(p['username'])[:9])
ret.append(self.curse_add_line(msg))
else:
msg = ' {:9}'.format('?')
ret.append(self.curse_add_line(msg))
# NICE
if 'nice' in p:
nice = p['nice']
if nice is None:
nice = '?'
msg = '{:>5}'.format(nice)
if isinstance(nice, int) and ((WINDOWS and nice != 32) or
(not WINDOWS and nice != 0)):
ret.append(self.curse_add_line(msg, decoration='NICE'))
else:
ret.append(self.curse_add_line(msg))
else:
msg = '{:>5}'.format('?')
ret.append(self.curse_add_line(msg))
# STATUS
if 'status' in p:
status = p['status']
msg = '{:>2}'.format(status)
if status == 'R':
ret.append(self.curse_add_line(msg, decoration='STATUS'))
else:
ret.append(self.curse_add_line(msg))
else:
msg = '{:>2}'.format('?')
ret.append(self.curse_add_line(msg))
# TIME+
if self.tag_proc_time:
try:
delta = timedelta(seconds=sum(p['cpu_times']))
except (OverflowError, TypeError) as e:
# Catch OverflowError on some Amazon EC2 server
# See https://github.com/nicolargo/glances/issues/87
# Also catch TypeError on macOS
# See: https://github.com/nicolargo/glances/issues/622
logger.debug("Cannot get TIME+ ({})".format(e))
self.tag_proc_time = False
else:
hours, minutes, seconds, microseconds = convert_timedelta(delta)
if hours:
msg = '{:>4}h'.format(hours)
ret.append(self.curse_add_line(msg, decoration='CPU_TIME', optional=True))
msg = '{}:{}'.format(str(minutes).zfill(2), seconds)
else:
msg = '{:>4}:{}.{}'.format(minutes, seconds, microseconds)
else:
msg = '{:>10}'.format('?')
ret.append(self.curse_add_line(msg, optional=True))
# IO read/write
if 'io_counters' in p:
# IO read
io_rs = int((p['io_counters'][0] - p['io_counters'][2]) / p['time_since_update'])
if io_rs == 0:
msg = '{:>6}'.format("0")
else:
msg = '{:>6}'.format(self.auto_unit(io_rs, low_precision=True))
ret.append(self.curse_add_line(msg, optional=True, additional=True))
# IO write
io_ws = int((p['io_counters'][1] - p['io_counters'][3]) / p['time_since_update'])
if io_ws == 0:
msg = '{:>6}'.format("0")
else:
msg = '{:>6}'.format(self.auto_unit(io_ws, low_precision=True))
ret.append(self.curse_add_line(msg, optional=True, additional=True))
else:
msg = '{:>6}'.format("?")
ret.append(self.curse_add_line(msg, optional=True, additional=True))
ret.append(self.curse_add_line(msg, optional=True, additional=True))
# Command line
# If no command line for the process is available, fallback to
# the bare process name instead
cmdline = p['cmdline']
try:
# XXX: remove `cmdline != ['']` when we'll drop support for psutil<4.0.0
if cmdline and cmdline != ['']:
# !!! DEBUG
logger.info(p['name'])
logger.info(cmdline)
logger.info(split_cmdline(cmdline))
# /!!!
path, cmd, arguments = split_cmdline(cmdline)
if os.path.isdir(path) and not args.process_short_name:
msg = ' {}'.format(path) + os.sep
ret.append(self.curse_add_line(msg, splittable=True))
if glances_processes.is_tree_enabled():
# mark position to add tree decoration
ret[-1]["_tree_decoration"] = True
ret.append(self.curse_add_line(cmd, decoration='PROCESS', splittable=True))
else:
msg = ' {}'.format(cmd)
ret.append(self.curse_add_line(msg, decoration='PROCESS', splittable=True))
if glances_processes.is_tree_enabled():
# mark position to add tree decoration
ret[-1]["_tree_decoration"] = True
if arguments:
msg = ' {}'.format(arguments)
ret.append(self.curse_add_line(msg, splittable=True))
else:
msg = ' {}'.format(p['name'])
ret.append(self.curse_add_line(msg, splittable=True))
except UnicodeEncodeError:
ret.append(self.curse_add_line('', splittable=True))
# Add extended stats but only for the top processes
# !!! CPU consumption ???
# TODO: extended stats into the web interface
if first and 'extended_stats' in p:
# Left padding
xpad = ' ' * 13
# First line is CPU affinity
if 'cpu_affinity' in p and p['cpu_affinity'] is not None:
ret.append(self.curse_new_line())
msg = xpad + 'CPU affinity: ' + str(len(p['cpu_affinity'])) + ' cores'
ret.append(self.curse_add_line(msg, splittable=True))
# Second line is memory info
if 'memory_info' in p and p['memory_info'] is not None:
ret.append(self.curse_new_line())
msg = xpad + 'Memory info: '
for k, v in iteritems(p['memory_info']._asdict()):
# Ignore rss and vms (already displayed)
if k not in ['rss', 'vms'] and v is not None:
msg += k + ' ' + self.auto_unit(v, low_precision=False) + ' '
if 'memory_swap' in p and p['memory_swap'] is not None:
msg += 'swap ' + self.auto_unit(p['memory_swap'], low_precision=False)
ret.append(self.curse_add_line(msg, splittable=True))
# Third line is for open files/network sessions
msg = ''
if 'num_threads' in p and p['num_threads'] is not None:
msg += 'threads ' + str(p['num_threads']) + ' '
if 'num_fds' in p and p['num_fds'] is not None:
msg += 'files ' + str(p['num_fds']) + ' '
if 'num_handles' in p and p['num_handles'] is not None:
msg += 'handles ' + str(p['num_handles']) + ' '
if 'tcp' in p and p['tcp'] is not None:
msg += 'TCP ' + str(p['tcp']) + ' '
if 'udp' in p and p['udp'] is not None:
msg += 'UDP ' + str(p['udp']) + ' '
if msg != '':
ret.append(self.curse_new_line())
msg = xpad + 'Open: ' + msg
ret.append(self.curse_add_line(msg, splittable=True))
# Fouth line is IO nice level (only Linux and Windows OS)
if 'ionice' in p and p['ionice'] is not None:
ret.append(self.curse_new_line())
msg = xpad + 'IO nice: '
k = 'Class is '
v = p['ionice'].ioclass
# Linux: The scheduling class. 0 for none, 1 for real time, 2 for best-effort, 3 for idle.
# Windows: On Windows only ioclass is used and it can be set to 2 (normal), 1 (low) or 0 (very low).
if WINDOWS:
if v == 0:
msg += k + 'Very Low'
elif v == 1:
msg += k + 'Low'
elif v == 2:
msg += 'No specific I/O priority'
else:
msg += k + str(v)
else:
if v == 0:
msg += 'No specific I/O priority'
elif v == 1:
msg += k + 'Real Time'
elif v == 2:
msg += k + 'Best Effort'
elif v == 3:
msg += k + 'IDLE'
else:
msg += k + str(v)
# value is a number which goes from 0 to 7.
# The higher the value, the lower the I/O priority of the process.
if hasattr(p['ionice'], 'value') and p['ionice'].value != 0:
msg += ' (value %s/7)' % str(p['ionice'].value)
ret.append(self.curse_add_line(msg, splittable=True))
return ret
def msg_curse(self, args=None, max_width=None):
"""Return the dict to display in the curse interface."""
# Init the return message
ret = []
# Only process if stats exist and display plugin enable...
if not self.stats or args.disable_process:
return ret
# Compute the sort key
process_sort_key = glances_processes.sort_key
# Header
self.__msg_curse_header(ret, process_sort_key, args)
# Process list
if glances_processes.is_tree_enabled():
ret.extend(self.get_process_tree_curses_data(
self.__sort_stats(process_sort_key), args, first_level=True,
max_node_count=glances_processes.max_processes))
else:
# Loop over processes (sorted by the sort key previously compute)
first = True
for p in self.__sort_stats(process_sort_key):
ret.extend(self.get_process_curses_data(p, first, args))
# End of extended stats
first = False
if glances_processes.process_filter is not None:
if args.reset_minmax_tag:
args.reset_minmax_tag = not args.reset_minmax_tag
self.__mmm_reset()
self.__msg_curse_sum(ret, args=args)
self.__msg_curse_sum(ret, mmm='min', args=args)
self.__msg_curse_sum(ret, mmm='max', args=args)
# Return the message with decoration
return ret
def __msg_curse_header(self, ret, process_sort_key, args=None):
"""Build the header and add it to the ret dict."""
sort_style = 'SORT'
if args.disable_irix and 0 < self.nb_log_core < 10:
msg = '{:>6}'.format('CPU%/' + str(self.nb_log_core))
elif args.disable_irix and self.nb_log_core != 0:
msg = '{:>6}'.format('CPU%/C')
else:
msg = '{:>6}'.format('CPU%')
ret.append(self.curse_add_line(msg, sort_style if process_sort_key == 'cpu_percent' else 'DEFAULT'))
msg = '{:>6}'.format('MEM%')
ret.append(self.curse_add_line(msg, sort_style if process_sort_key == 'memory_percent' else 'DEFAULT'))
msg = '{:>6}'.format('VIRT')
ret.append(self.curse_add_line(msg, optional=True))
msg = '{:>6}'.format('RES')
ret.append(self.curse_add_line(msg, optional=True))
msg = '{:>{width}}'.format('PID', width=self.__max_pid_size() + 1)
ret.append(self.curse_add_line(msg))
msg = ' {:10}'.format('USER')
ret.append(self.curse_add_line(msg, sort_style if process_sort_key == 'username' else 'DEFAULT'))
msg = '{:>4}'.format('NI')
ret.append(self.curse_add_line(msg))
msg = '{:>2}'.format('S')
ret.append(self.curse_add_line(msg))
msg = '{:>10}'.format('TIME+')
ret.append(self.curse_add_line(msg, sort_style if process_sort_key == 'cpu_times' else 'DEFAULT', optional=True))
msg = '{:>6}'.format('R/s')
ret.append(self.curse_add_line(msg, sort_style if process_sort_key == 'io_counters' else 'DEFAULT', optional=True, additional=True))
msg = '{:>6}'.format('W/s')
ret.append(self.curse_add_line(msg, sort_style if process_sort_key == 'io_counters' else 'DEFAULT', optional=True, additional=True))
msg = ' {:8}'.format('Command')
ret.append(self.curse_add_line(msg, sort_style if process_sort_key == 'name' else 'DEFAULT'))
def __msg_curse_sum(self, ret, sep_char='_', mmm=None, args=None):
"""
Build the sum message (only when filter is on) and add it to the ret dict.
* ret: list of string where the message is added
* sep_char: define the line separation char
* mmm: display min, max, mean or current (if mmm=None)
* args: Glances args
"""
ret.append(self.curse_new_line())
if mmm is None:
ret.append(self.curse_add_line(sep_char * 69))
ret.append(self.curse_new_line())
# CPU percent sum
msg = '{:>6.1f}'.format(self.__sum_stats('cpu_percent', mmm=mmm))
ret.append(self.curse_add_line(msg,
decoration=self.__mmm_deco(mmm)))
# MEM percent sum
msg = '{:>6.1f}'.format(self.__sum_stats('memory_percent', mmm=mmm))
ret.append(self.curse_add_line(msg,
decoration=self.__mmm_deco(mmm)))
# VIRT and RES memory sum
if 'memory_info' in self.stats[0] and self.stats[0]['memory_info'] is not None and self.stats[0]['memory_info'] != '':
# VMS
msg = '{:>6}'.format(self.auto_unit(self.__sum_stats('memory_info', indice=1, mmm=mmm), low_precision=False))
ret.append(self.curse_add_line(msg,
decoration=self.__mmm_deco(mmm),
optional=True))
# RSS
msg = '{:>6}'.format(self.auto_unit(self.__sum_stats('memory_info', indice=0, mmm=mmm), low_precision=False))
ret.append(self.curse_add_line(msg,
decoration=self.__mmm_deco(mmm),
optional=True))
else:
msg = '{:>6}'.format('')
ret.append(self.curse_add_line(msg))
ret.append(self.curse_add_line(msg))
# PID
msg = '{:>6}'.format('')
ret.append(self.curse_add_line(msg))
# USER
msg = ' {:9}'.format('')
ret.append(self.curse_add_line(msg))
# NICE
msg = '{:>5}'.format('')
ret.append(self.curse_add_line(msg))
# STATUS
msg = '{:>2}'.format('')
ret.append(self.curse_add_line(msg))
# TIME+
msg = '{:>10}'.format('')
ret.append(self.curse_add_line(msg, optional=True))
# IO read/write
if 'io_counters' in self.stats[0] and mmm is None:
# IO read
io_rs = int((self.__sum_stats('io_counters', 0) - self.__sum_stats('io_counters', indice=2, mmm=mmm)) / self.stats[0]['time_since_update'])
if io_rs == 0:
msg = '{:>6}'.format('0')
else:
msg = '{:>6}'.format(self.auto_unit(io_rs, low_precision=True))
ret.append(self.curse_add_line(msg,
decoration=self.__mmm_deco(mmm),
optional=True, additional=True))
# IO write
io_ws = int((self.__sum_stats('io_counters', 1) - self.__sum_stats('io_counters', indice=3, mmm=mmm)) / self.stats[0]['time_since_update'])
if io_ws == 0:
msg = '{:>6}'.format('0')
else:
msg = '{:>6}'.format(self.auto_unit(io_ws, low_precision=True))
ret.append(self.curse_add_line(msg,
decoration=self.__mmm_deco(mmm),
optional=True, additional=True))
else:
msg = '{:>6}'.format('')
ret.append(self.curse_add_line(msg, optional=True, additional=True))
ret.append(self.curse_add_line(msg, optional=True, additional=True))
if mmm is None:
msg = ' < {}'.format('current')
ret.append(self.curse_add_line(msg, optional=True))
else:
msg = ' < {}'.format(mmm)
ret.append(self.curse_add_line(msg, optional=True))
msg = ' (\'M\' to reset)'
ret.append(self.curse_add_line(msg, optional=True))
def __mmm_deco(self, mmm):
"""Return the decoration string for the current mmm status."""
if mmm is not None:
return 'DEFAULT'
else:
return 'FILTER'
def __mmm_reset(self):
"""Reset the MMM stats."""
self.mmm_min = {}
self.mmm_max = {}
def __sum_stats(self, key, indice=None, mmm=None):
"""Return the sum of the stats value for the given key.
* indice: If indice is set, get the p[key][indice]
* mmm: display min, max, mean or current (if mmm=None)
"""
# Compute stats summary
ret = 0
for p in self.stats:
if key not in p:
# Correct issue #1188
continue
if indice is None:
ret += p[key]
else:
ret += p[key][indice]
# Manage Min/Max/Mean
mmm_key = self.__mmm_key(key, indice)
if mmm == 'min':
try:
if self.mmm_min[mmm_key] > ret:
self.mmm_min[mmm_key] = ret
except AttributeError:
self.mmm_min = {}
return 0
except KeyError:
self.mmm_min[mmm_key] = ret
ret = self.mmm_min[mmm_key]
elif mmm == 'max':
try:
if self.mmm_max[mmm_key] < ret:
self.mmm_max[mmm_key] = ret
except AttributeError:
self.mmm_max = {}
return 0
except KeyError:
self.mmm_max[mmm_key] = ret
ret = self.mmm_max[mmm_key]
return ret
def __mmm_key(self, key, indice):
ret = key
if indice is not None:
ret += str(indice)
return ret
def __sort_stats(self, sortedby=None):
"""Return the stats (dict) sorted by (sortedby)."""
return sort_stats(self.stats, sortedby,
tree=glances_processes.is_tree_enabled(),
reverse=glances_processes.sort_reverse)
def __max_pid_size(self):
"""Return the maximum PID size in number of char."""
if self.pid_max is not None:
return len(str(self.pid_max))
else:
# By default return 5 (corresponding to 99999 PID number)
return 5