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.. |downloads| image:: https://img.shields.io/pypi/dm/psutil.svg
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    :alt: Downloads

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.. |tidelift| image:: https://tidelift.com/badges/github/giampaolo/psutil?style=flat
    :target: https://tidelift.com/subscription/pkg/pypi-psutil?utm_source=pypi-psutil&utm_medium=referral&utm_campaign=readme
    :alt: Tidelift

-----

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.org/project/psutil/#files>`_
- `Forum <http://groups.google.com/group/psutil/topics>`_
- `StackOverflow <https://stackoverflow.com/questions/tagged/psutil>`_
- `Blog <http://grodola.blogspot.com/search/label/psutil>`_
- `Development guide <https://github.com/giampaolo/psutil/blob/master/docs/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 classic UNIX command line tools
such as *ps, top, iotop, lsof, netstat, ifconfig, free* and others.
psutil currently supports the following platforms:

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

...both **32-bit** and **64-bit** architectures. Supported Python versions are **2.6**, **2.7** and **3.4+**. `PyPy <http://pypy.org/>`__ is also known to work.

Professional support
====================

.. |tideliftlogo| image:: https://nedbatchelder.com/pix/Tidelift_Logos_RGB_Tidelift_Shorthand_On-White_small.png
   :width: 100
   :alt: Tidelift
   :target: https://tidelift.com/subscription/pkg/pypi-psutil?utm_source=pypi-psutil&utm_medium=referral&utm_campaign=readme

.. list-table::
   :widths: 10 100

   * - |tideliftlogo|
     - Professional support for psutil is available as part of the
       `Tidelift Subscription`_.
       Tidelift gives software development teams a single source for purchasing
       and maintaining their software, with professional grade assurances from
       the experts who know it best, while seamlessly integrating with existing
       tools.
       By subscribing you will help me (`Giampaolo Rodola`_) support psutil
       future development. Alternatively consider making a small `donation`_.

Security
========

To report a security vulnerability, please use the `Tidelift security
contact`_.  Tidelift will coordinate the fix and disclosure.

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
=====================

psutil has roughly the following monthly downloads:

.. image:: https://img.shields.io/pypi/dm/psutil.svg
    :target: https://pepy.tech/project/psutil
    :alt: Downloads

There are over
`10.000 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/google/grr
- https://github.com/facebook/osquery/
- https://github.com/nicolargo/glances
- 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
==============

This represents pretty much the whole psutil API.

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)
    >>>
    >>> psutil.getloadavg()  # also on Windows (emulated)
    (3.14, 3.89, 4.67)

Memory
------

.. code-block:: python

    >>> 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

    >>> 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

    >>> 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),
     ...]
    >>>
    >>> psutil.net_if_addrs()
    {'lo': [snicaddr(family=<AddressFamily.AF_INET: 2>, address='127.0.0.1', netmask='255.0.0.0', broadcast='127.0.0.1', ptp=None),
            snicaddr(family=<AddressFamily.AF_INET6: 10>, address='::1', netmask='ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff', broadcast=None, ptp=None),
            snicaddr(family=<AddressFamily.AF_LINK: 17>, address='00:00:00:00:00:00', netmask=None, broadcast='00:00:00:00:00:00', ptp=None)],
     'wlan0': [snicaddr(family=<AddressFamily.AF_INET: 2>, address='192.168.1.3', netmask='255.255.255.0', broadcast='192.168.1.255', ptp=None),
               snicaddr(family=<AddressFamily.AF_INET6: 10>, address='fe80::c685:8ff:fe45:641%wlan0', netmask='ffff:ffff:ffff:ffff::', broadcast=None, ptp=None),
               snicaddr(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()
    {'lo': snicstats(isup=True, duplex=<NicDuplex.NIC_DUPLEX_UNKNOWN: 0>, speed=0, mtu=65536),
     'wlan0': snicstats(isup=True, duplex=<NicDuplex.NIC_DUPLEX_FULL: 2>, speed=100, mtu=1500)}
    >>>

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)]}
    >>>
    >>> 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
    psutil.Process(pid=7055, name='python', started='09:04:44')
    >>> 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.children(recursive=True)
    [psutil.Process(pid=29835, name='python2.7', started='11:45:38'),
     psutil.Process(pid=29836, name='python2.7', started='11:43:39')]
    >>>
    >>> p.parent()
    psutil.Process(pid=4699, name='bash', started='09:06:44')
    >>> p.parents()
    [psutil.Process(pid=4699, name='bash', started='09:06:44'),
     psutil.Process(pid=4689, name='gnome-terminal-server', started='0:06:44'),
     psutil.Process(pid=1, name='systemd', started='05:56:55')]
    >>>
    >>> 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, iowait=0.0)
    >>> 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, macOS, 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='[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/monit.py', fd=3, position=0, mode='r', flags=32768),
     popenfile(path='/var/log/monit.log', 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')]
    >>>
    >>> p.num_threads()
    4
    >>> p.num_fds()
    8
    >>> p.threads()
    [pthread(id=5234, user_time=22.5, system_time=9.2891),
     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',
     ...}
    >>>
    >>> 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.kill()
    >>> 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
    ...
    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'}


.. _`Giampaolo Rodola`: http://grodola.blogspot.com/p/about.html
.. _`donation`: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A9ZS7PKKRM3S8
.. _Tidelift security contact: https://tidelift.com/security
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