.. 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://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://pythonhosted.org/psutil/>`_
- `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) 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 command line
tools such as: ps, top, lsof, netstat, ifconfig, who, df, kill, free, nice,
ionice, iostat, iotop, uptime, pidof, tty, taskset, pmap. It currently supports
**Linux, Windows, OSX, Sun Solaris, FreeBSD, OpenBSD** and **NetBSD**,
both **32-bit** and **64-bit** architectures, with Python versions from **2.6
to 3.5** (users of Python 2.4 and 2.5 may use
`2.1.3 <https://pypi.python.org/pypi?name=psutil&version=2.1.3&:action=files>`__ version).
`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 https://github.com/giampaolo/psutil/tree/master/scripts.

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

At the time of writing there are over
`4200 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

==============
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)

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()
    [pconn(fd=115, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=('10.0.0.1', 48776), raddr=('93.186.135.91', 80), status='ESTABLISHED', pid=1254),
     pconn(fd=117, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=('10.0.0.1', 43761), raddr=('72.14.234.100', 80), status='CLOSING', pid=2987),
     pconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=('10.0.0.1', 60759), raddr=('72.14.234.104', 80), status='ESTABLISHED', pid=None),
     pconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=('10.0.0.1', 51314), raddr=('72.14.234.83', 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)}

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

.. code-block:: python

    >>> psutil.users()
    [user(name='giampaolo', terminal='pts/2', host='localhost', started=1340737536.0),
     user(name='giampaolo', terminal='pts/3', host='localhost', started=1340737792.0)]
    >>>
    >>> 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])  # set
    >>>
    >>> 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)
    >>>
    >>> 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=('10.0.0.1', 48776), raddr=('93.186.135.91', 80), status='ESTABLISHED'),
     pconn(fd=117, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=('10.0.0.1', 43761), raddr=('72.14.234.100', 80), status='CLOSING'),
     pconn(fd=119, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=('10.0.0.1', 60759), raddr=('72.14.234.104', 80), status='ESTABLISHED'),
     pconn(fd=123, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=('10.0.0.1', 51314), raddr=('72.14.234.83', 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

    >>> for p in psutil.process_iter():
    ...     print(p)
    ...
    psutil.Process(pid=1, name='init')
    psutil.Process(pid=2, name='kthreadd')
    psutil.Process(pid=3, name='ksoftirqd/0')
    ...
    >>>
    >>> 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)
    >>>

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'}

======
Donate
======

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 Rodola' <http://grodola.blogspot.com/p/about.html>`_) some money.
I only ask for a small donation, but of course I appreciate any amount.

.. 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>`_.

============
Mailing list
============

http://groups.google.com/group/psutil/


