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README.rst

.. image:: https://img.shields.io/travis/giampaolo/psutil/master.svg?maxAge=3600&label=Linux%20/%20OSX
    :target: https://travis-ci.org/giampaolo/psutil
    :alt: Linux tests (Travis)

.. image:: https://img.shields.io/appveyor/ci/giampaolo/psutil/master.svg?maxAge=3600&label=Windows
    :target: https://ci.appveyor.com/project/giampaolo/psutil
    :alt: Windows tests (Appveyor)

.. image:: https://coveralls.io/repos/github/giampaolo/psutil/badge.svg?branch=master
    :target: https://coveralls.io/github/giampaolo/psutil?branch=master
    :alt: Test coverage (coverall.io)

.. image:: https://readthedocs.org/projects/psutil/badge/?version=latest
    :target: http://psutil.readthedocs.io/en/latest/?badge=latest
    :alt: Documentation Status

.. image:: https://img.shields.io/pypi/v/psutil.svg?label=pypi
    :target: https://pypi.python.org/pypi/psutil/
    :alt: Latest version

.. image:: https://img.shields.io/github/stars/giampaolo/psutil.svg
    :target: https://github.com/giampaolo/psutil/
    :alt: Github stars

.. image:: https://img.shields.io/pypi/l/psutil.svg
    :target: https://pypi.python.org/pypi/psutil/
    :alt: License

===========
Quick links
===========

- `Home page <https://github.com/giampaolo/psutil>`_
- `Install <https://github.com/giampaolo/psutil/blob/master/INSTALL.rst>`_
- `Documentation <http://psutil.readthedocs.io>`_
- `Download <https://pypi.python.org/pypi?:action=display&name=psutil#downloads>`_
- `Forum <http://groups.google.com/group/psutil/topics>`_
- `Blog <http://grodola.blogspot.com/search/label/psutil>`_
- `Development guide <https://github.com/giampaolo/psutil/blob/master/DEVGUIDE.rst>`_
- `What's new <https://github.com/giampaolo/psutil/blob/master/HISTORY.rst>`_

=======
Summary
=======

psutil (process and system utilities) is a cross-platform library for
retrieving information on **running processes** and **system utilization**
(CPU, memory, disks, network, sensors) in Python.
It is useful mainly for **system monitoring**, **profiling and limiting process
resources** and **management of running processes**.
It implements many functionalities offered by UNIX command line tools such as:
ps, top, lsof, netstat, ifconfig, who, df, kill, free, nice, ionice, iostat,
iotop, uptime, pidof, tty, taskset, pmap.
psutil currently supports the following platforms:

- **Linux**
- **Windows**
- **OSX**,
- **FreeBSD, OpenBSD**, **NetBSD**
- **Sun Solaris**
- **AIX**

...both **32-bit** and **64-bit** architectures, with Python
versions from **2.6 to 3.6**.
`PyPy <http://pypy.org/>`__ is also known to work.

====================
Example applications
====================

+------------------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------+
| .. image:: https://github.com/giampaolo/psutil/blob/master/docs/_static/procinfo-small.png     | .. image:: https://github.com/giampaolo/psutil/blob/master/docs/_static/top-small.png      |
|    :target: https://github.com/giampaolo/psutil/blob/master/docs/_static/procinfo.png          |     :target: https://github.com/giampaolo/psutil/blob/master/docs/_static/top.png          |
+------------------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------+
| .. image:: https://github.com/giampaolo/psutil/blob/master/docs/_static/procsmem-small.png     | .. image:: https://github.com/giampaolo/psutil/blob/master/docs/_static/pmap-small.png     |
|     :target: https://github.com/giampaolo/psutil/blob/master/docs/_static/procsmem.png         |     :target: https://github.com/giampaolo/psutil/blob/master/docs/_static/pmap.png         |
+------------------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------+

Also see `scripts directory <https://github.com/giampaolo/psutil/tree/master/scripts>`__
and `doc recipes <http://psutil.readthedocs.io/#recipes/>`__.

=====================
Projects using psutil
=====================

At the time of writing psutil has roughly
`2.9 milion downloads <https://github.com/giampaolo/psutil/issues/1053#issuecomment-340166262>`__
per month and there are over
`6000 open source projects <https://libraries.io/pypi/psutil/dependent_repositories?page=1>`__
on github which depend from psutil.
Here's some I find particularly interesting:

- https://github.com/facebook/osquery/
- https://github.com/nicolargo/glances
- https://github.com/google/grr
- https://github.com/Jahaja/psdash
- https://github.com/ajenti/ajenti
- https://github.com/home-assistant/home-assistant/

========
Portings
========

- Go: https://github.com/shirou/gopsutil
- C: https://github.com/hamon-in/cpslib
- Node: https://github.com/christkv/node-psutil
- Rust: https://github.com/borntyping/rust-psutil
- Ruby: https://github.com/spacewander/posixpsutil
- Nim: https://github.com/johnscillieri/psutil-nim

==============
Example usages
==============

CPU
===

.. code-block:: python

    >>> import psutil
    >>> psutil.cpu_times()
    scputimes(user=3961.46, nice=169.729, system=2150.659, idle=16900.540, iowait=629.59, irq=0.0, softirq=19.42, steal=0.0, guest=0, nice=0.0)
    >>>
    >>> for x in range(3):
    ...     psutil.cpu_percent(interval=1)
    ...
    4.0
    5.9
    3.8
    >>>
    >>> for x in range(3):
    ...     psutil.cpu_percent(interval=1, percpu=True)
    ...
    [4.0, 6.9, 3.7, 9.2]
    [7.0, 8.5, 2.4, 2.1]
    [1.2, 9.0, 9.9, 7.2]
    >>>
    >>> for x in range(3):
    ...     psutil.cpu_times_percent(interval=1, percpu=False)
    ...
    scputimes(user=1.5, nice=0.0, system=0.5, idle=96.5, iowait=1.5, irq=0.0, softirq=0.0, steal=0.0, guest=0.0, guest_nice=0.0)
    scputimes(user=1.0, nice=0.0, system=0.0, idle=99.0, iowait=0.0, irq=0.0, softirq=0.0, steal=0.0, guest=0.0, guest_nice=0.0)
    scputimes(user=2.0, nice=0.0, system=0.0, idle=98.0, iowait=0.0, irq=0.0, softirq=0.0, steal=0.0, guest=0.0, guest_nice=0.0)
    >>>
    >>> psutil.cpu_count()
    4
    >>> psutil.cpu_count(logical=False)
    2
    >>>
    >>> psutil.cpu_stats()
    scpustats(ctx_switches=20455687, interrupts=6598984, soft_interrupts=2134212, syscalls=0)
    >>>
    >>> psutil.cpu_freq()
    scpufreq(current=931.42925, min=800.0, max=3500.0)
    >>>

Memory
======

.. code-block:: python

    >>> import psutil
    >>> psutil.virtual_memory()
    svmem(total=10367352832, available=6472179712, percent=37.6, used=8186245120, free=2181107712, active=4748992512, inactive=2758115328, buffers=790724608, cached=3500347392, shared=787554304)
    >>> psutil.swap_memory()
    sswap(total=2097147904, used=296128512, free=1801019392, percent=14.1, sin=304193536, sout=677842944)
    >>>

Disks
=====

.. code-block:: python

    >>> import psutil
    >>> psutil.disk_partitions()
    [sdiskpart(device='/dev/sda1', mountpoint='/', fstype='ext4', opts='rw,nosuid'),
     sdiskpart(device='/dev/sda2', mountpoint='/home', fstype='ext, opts='rw')]
    >>>
    >>> psutil.disk_usage('/')
    sdiskusage(total=21378641920, used=4809781248, free=15482871808, percent=22.5)
    >>>
    >>> psutil.disk_io_counters(perdisk=False)
    sdiskio(read_count=719566, write_count=1082197, read_bytes=18626220032, write_bytes=24081764352, read_time=5023392, write_time=63199568, read_merged_count=619166, write_merged_count=812396, busy_time=4523412)
    >>>

Network
=======

.. code-block:: python

    >>> import psutil
    >>> psutil.net_io_counters(pernic=True)
    {'eth0': netio(bytes_sent=485291293, bytes_recv=6004858642, packets_sent=3251564, packets_recv=4787798, errin=0, errout=0, dropin=0, dropout=0),
     'lo': netio(bytes_sent=2838627, bytes_recv=2838627, packets_sent=30567, packets_recv=30567, errin=0, errout=0, dropin=0, dropout=0)}
    >>>
    >>> psutil.net_connections()
    [sconn(fd=115, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=addr(ip='10.0.0.1', port=48776), raddr=addr(ip='93.186.135.91', port=80), status='ESTABLISHED', pid=1254),
     sconn(fd=117, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=addr(ip='10.0.0.1', port=43761), raddr=addr(ip='72.14.234.100', port=80), status='CLOSING', pid=2987),
     sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=addr(ip='10.0.0.1', port=60759), raddr=addr(ip='72.14.234.104', port=80), status='ESTABLISHED', pid=None),
     sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=addr(ip='10.0.0.1', port=51314), raddr=addr(ip='72.14.234.83', port=443), status='SYN_SENT', pid=None)
     ...]
    >>>
    >>> psutil.net_if_addrs()
    {'lo': [snic(family=<AddressFamily.AF_INET: 2>, address='127.0.0.1', netmask='255.0.0.0', broadcast='127.0.0.1', ptp=None),
            snic(family=<AddressFamily.AF_INET6: 10>, address='::1', netmask='ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff', broadcast=None, ptp=None),
            snic(family=<AddressFamily.AF_LINK: 17>, address='00:00:00:00:00:00', netmask=None, broadcast='00:00:00:00:00:00', ptp=None)],
     'wlan0': [snic(family=<AddressFamily.AF_INET: 2>, address='192.168.1.3', netmask='255.255.255.0', broadcast='192.168.1.255', ptp=None),
               snic(family=<AddressFamily.AF_INET6: 10>, address='fe80::c685:8ff:fe45:641%wlan0', netmask='ffff:ffff:ffff:ffff::', broadcast=None, ptp=None),
               snic(family=<AddressFamily.AF_LINK: 17>, address='c4:85:08:45:06:41', netmask=None, broadcast='ff:ff:ff:ff:ff:ff', ptp=None)]}
    >>>
    >>> psutil.net_if_stats()
    {'eth0': snicstats(isup=True, duplex=<NicDuplex.NIC_DUPLEX_FULL: 2>, speed=100, mtu=1500),
     'lo': snicstats(isup=True, duplex=<NicDuplex.NIC_DUPLEX_UNKNOWN: 0>, speed=0, mtu=65536)}
    >>>

Sensors
=======

.. code-block:: python

    >>> import psutil
    >>> psutil.sensors_temperatures()
    {'acpitz': [shwtemp(label='', current=47.0, high=103.0, critical=103.0)],
     'asus': [shwtemp(label='', current=47.0, high=None, critical=None)],
     'coretemp': [shwtemp(label='Physical id 0', current=52.0, high=100.0, critical=100.0),
                  shwtemp(label='Core 0', current=45.0, high=100.0, critical=100.0),
                  shwtemp(label='Core 1', current=52.0, high=100.0, critical=100.0),
                  shwtemp(label='Core 2', current=45.0, high=100.0, critical=100.0),
                  shwtemp(label='Core 3', current=47.0, high=100.0, critical=100.0)]}
    >>>
    >>> psutil.sensors_fans()
    {'asus': [sfan(label='cpu_fan', current=3200)]}
    >>>
    >>> psutil.sensors_battery()
    sbattery(percent=93, secsleft=16628, power_plugged=False)
    >>>

Other system info
=================

.. code-block:: python

    >>> import psutil
    >>> psutil.users()
    [suser(name='giampaolo', terminal='pts/2', host='localhost', started=1340737536.0, pid=1352),
     suser(name='giampaolo', terminal='pts/3', host='localhost', started=1340737792.0, pid=1788)]
    >>>
    >>> psutil.boot_time()
    1365519115.0
    >>>

Process management
==================

.. code-block:: python

    >>> import psutil
    >>> psutil.pids()
    [1, 2, 3, 4, 5, 6, 7, 46, 48, 50, 51, 178, 182, 222, 223, 224, 268, 1215, 1216, 1220, 1221, 1243, 1244,
     1301, 1601, 2237, 2355, 2637, 2774, 3932, 4176, 4177, 4185, 4187, 4189, 4225, 4243, 4245, 4263, 4282,
     4306, 4311, 4312, 4313, 4314, 4337, 4339, 4357, 4358, 4363, 4383, 4395, 4408, 4433, 4443, 4445, 4446,
     5167, 5234, 5235, 5252, 5318, 5424, 5644, 6987, 7054, 7055, 7071]
    >>>
    >>> p = psutil.Process(7055)
    >>> p.name()
    'python'
    >>> p.exe()
    '/usr/bin/python'
    >>> p.cwd()
    '/home/giampaolo'
    >>> p.cmdline()
    ['/usr/bin/python', 'main.py']
    >>>
    >>> p.pid
    7055
    >>> p.ppid()
    7054
    >>> p.parent()
    <psutil.Process(pid=7054, name='bash') at 140008329539408>
    >>> p.children()
    [<psutil.Process(pid=8031, name='python') at 14020832451977>,
     <psutil.Process(pid=8044, name='python') at 19229444921932>]
    >>>
    >>> p.status()
    'running'
    >>> p.username()
    'giampaolo'
    >>> p.create_time()
    1267551141.5019531
    >>> p.terminal()
    '/dev/pts/0'
    >>>
    >>> p.uids()
    puids(real=1000, effective=1000, saved=1000)
    >>> p.gids()
    pgids(real=1000, effective=1000, saved=1000)
    >>>
    >>> p.cpu_times()
    pcputimes(user=1.02, system=0.31, children_user=0.32, children_system=0.1)
    >>> p.cpu_percent(interval=1.0)
    12.1
    >>> p.cpu_affinity()
    [0, 1, 2, 3]
    >>> p.cpu_affinity([0, 1])  # set
    >>> p.cpu_num()
    1
    >>>
    >>> p.memory_info()
    pmem(rss=10915840, vms=67608576, shared=3313664, text=2310144, lib=0, data=7262208, dirty=0)
    >>> p.memory_full_info()  # "real" USS memory usage (Linux, OSX, Win only)
    pfullmem(rss=10199040, vms=52133888, shared=3887104, text=2867200, lib=0, data=5967872, dirty=0, uss=6545408, pss=6872064, swap=0)
    >>> p.memory_percent()
    0.7823
    >>> p.memory_maps()
    [pmmap_grouped(path='/lib/x8664-linux-gnu/libutil-2.15.so', rss=32768, size=2125824, pss=32768, shared_clean=0, shared_dirty=0, private_clean=20480, private_dirty=12288, referenced=32768, anonymous=12288, swap=0),
     pmmap_grouped(path='/lib/x8664-linux-gnu/libc-2.15.so', rss=3821568, size=3842048, pss=3821568, shared_clean=0, shared_dirty=0, private_clean=0, private_dirty=3821568, referenced=3575808, anonymous=3821568, swap=0),
     pmmap_grouped(path='/lib/x8664-linux-gnu/libcrypto.so.0.1', rss=34124, rss=32768, size=2134016, pss=15360, shared_clean=24576, shared_dirty=0, private_clean=0, private_dirty=8192, referenced=24576, anonymous=8192, swap=0),
     pmmap_grouped(path='[heap]',  rss=32768, size=139264, pss=32768, shared_clean=0, shared_dirty=0, private_clean=0, private_dirty=32768, referenced=32768, anonymous=32768, swap=0),
     pmmap_grouped(path='[stack]', rss=2465792, size=2494464, pss=2465792, shared_clean=0, shared_dirty=0, private_clean=0, private_dirty=2465792, referenced=2277376, anonymous=2465792, swap=0),
     ...]
    >>>
    >>> p.io_counters()
    pio(read_count=478001, write_count=59371, read_bytes=700416, write_bytes=69632, read_chars=456232, write_chars=517543)
    >>>
    >>> p.open_files()
    [popenfile(path='/home/giampaolo/svn/psutil/setup.py', fd=3, position=0, mode='r', flags=32768),
     popenfile(path='/var/log/monitd', fd=4, position=235542, mode='a', flags=33793)]
    >>>
    >>> p.connections()
    [pconn(fd=115, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=addr(ip='10.0.0.1', port=48776), raddr=addr(ip='93.186.135.91', port=80), status='ESTABLISHED'),
     pconn(fd=117, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=addr(ip='10.0.0.1', port=43761), raddr=addr(ip='72.14.234.100', port=80), status='CLOSING'),
     pconn(fd=119, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=addr(ip='10.0.0.1', port=60759), raddr=addr(ip='72.14.234.104', port=80), status='ESTABLISHED'),
     pconn(fd=123, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=addr(ip='10.0.0.1', port=51314), raddr=addr(ip='72.14.234.83', port=443), status='SYN_SENT')]
    >>>
    >>> p.num_threads()
    4
    >>> p.num_fds()
    8
    >>> p.threads()
    [pthread(id=5234, user_time=22.5, system_time=9.2891),
     pthread(id=5235, user_time=0.0, system_time=0.0),
     pthread(id=5236, user_time=0.0, system_time=0.0),
     pthread(id=5237, user_time=0.0707, system_time=1.1)]
    >>>
    >>> p.num_ctx_switches()
    pctxsw(voluntary=78, involuntary=19)
    >>>
    >>> p.nice()
    0
    >>> p.nice(10)  # set
    >>>
    >>> p.ionice(psutil.IOPRIO_CLASS_IDLE)  # IO priority (Win and Linux only)
    >>> p.ionice()
    pionice(ioclass=<IOPriority.IOPRIO_CLASS_IDLE: 3>, value=0)
    >>>
    >>> p.rlimit(psutil.RLIMIT_NOFILE, (5, 5))  # set resource limits (Linux only)
    >>> p.rlimit(psutil.RLIMIT_NOFILE)
    (5, 5)
    >>>
    >>> p.environ()
    {'LC_PAPER': 'it_IT.UTF-8', 'SHELL': '/bin/bash', 'GREP_OPTIONS': '--color=auto',
    'XDG_CONFIG_DIRS': '/etc/xdg/xdg-ubuntu:/usr/share/upstart/xdg:/etc/xdg', 'COLORTERM': 'gnome-terminal',
     ...}
    >>>
    >>> p.as_dict()
    {'status': 'running', 'num_ctx_switches': pctxsw(voluntary=63, involuntary=1), 'pid': 5457, ...}
    >>> p.is_running()
    True
    >>> p.suspend()
    >>> p.resume()
    >>>
    >>> p.terminate()
    >>> p.wait(timeout=3)
    0
    >>>
    >>> psutil.test()
    USER         PID %CPU %MEM     VSZ     RSS TTY        START    TIME  COMMAND
    root           1  0.0  0.0   24584    2240            Jun17   00:00  init
    root           2  0.0  0.0       0       0            Jun17   00:00  kthreadd
    root           3  0.0  0.0       0       0            Jun17   00:05  ksoftirqd/0
    ...
    giampaolo  31475  0.0  0.0   20760    3024 /dev/pts/0 Jun19   00:00  python2.4
    giampaolo  31721  0.0  2.2  773060  181896            00:04   10:30  chrome
    root       31763  0.0  0.0       0       0            00:05   00:00  kworker/0:1
    >>>

Further process APIs
====================

.. code-block:: python

    >>> import psutil
    >>> for proc in psutil.process_iter(attrs=['pid', 'name']):
    ...     print(proc.info)
    ...
    {'pid': 1, 'name': 'systemd'}
    {'pid': 2, 'name': 'kthreadd'}
    {'pid': 3, 'name': 'ksoftirqd/0'}
    ...
    >>>
    >>> psutil.pid_exists(3)
    True
    >>>
    >>> def on_terminate(proc):
    ...     print("process {} terminated".format(proc))
    ...
    >>> # waits for multiple processes to terminate
    >>> gone, alive = psutil.wait_procs(procs_list, timeout=3, callback=on_terminate)
    >>>

Popen wrapper:

.. code-block:: python

    >>> import psutil
    >>> from subprocess import PIPE
    >>> p = psutil.Popen(["/usr/bin/python", "-c", "print('hello')"], stdout=PIPE)
    >>> p.name()
    'python'
    >>> p.username()
    'giampaolo'
    >>> p.communicate()
    ('hello\n', None)
    >>> p.wait(timeout=2)
    0
    >>>

Windows services
================

.. code-block:: python

    >>> list(psutil.win_service_iter())
    [<WindowsService(name='AeLookupSvc', display_name='Application Experience') at 38850096>,
     <WindowsService(name='ALG', display_name='Application Layer Gateway Service') at 38850128>,
     <WindowsService(name='APNMCP', display_name='Ask Update Service') at 38850160>,
     <WindowsService(name='AppIDSvc', display_name='Application Identity') at 38850192>,
     ...]
    >>> s = psutil.win_service_get('alg')
    >>> s.as_dict()
    {'binpath': 'C:\\Windows\\System32\\alg.exe',
     'description': 'Provides support for 3rd party protocol plug-ins for Internet Connection Sharing',
     'display_name': 'Application Layer Gateway Service',
     'name': 'alg',
     'pid': None,
     'start_type': 'manual',
     'status': 'stopped',
     'username': 'NT AUTHORITY\\LocalService'}

Other samples
=============

See `doc recipes <http://psutil.readthedocs.io/#recipes>`__.

======
Author
======

psutil was created and is maintained by
`Giampaolo Rodola' <http://grodola.blogspot.com/p/about.html>`__.
A lot of time and effort went into making psutil as it is right now.
If you feel psutil is useful to you or your business and want to support its
future development please consider donating me
(`Giampaolo <http://grodola.blogspot.com/p/about.html>`__) some money.

.. image:: http://www.paypal.com/en_US/i/btn/x-click-but04.gif
    :target: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A9ZS7PKKRM3S8
    :alt: Donate via PayPal

Don't want to donate money? Then maybe you could `write me a recommendation on Linkedin <https://www.linkedin.com/in/grodola>`_.