psutil is a cross-platform library for retrieving information about running processes and system utilization (CPU, memory, disks, network, sensors) in Python. It is useful mainly for system monitoring, profiling, limiting process resources, and managing running processes.
It implements many functionalities offered by UNIX command line tool such as ps, top, free, iotop, netstat, ifconfig, lsof and others (see shell equivalents). psutil supports the following platforms:
- Linux
- Windows
- macOS
- FreeBSD, OpenBSD, NetBSD
- Sun Solaris
- AIX
psutil is among the top 100 most-downloaded packages on PyPI, with 330+ million downloads per month, 760,000+ GitHub repositories using it, and 15,000+ packages depending on it.
See also adoptions and alternatives.
pip install psutil
For platform-specific details see installation.
psutil documentation is available at https://psutil.readthedocs.io/latest.
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For the full API with more examples, see the API overview and API reference.
CPU
>>> import psutil
>>> psutil.cpu_percent(interval=1, percpu=True)
[4.0, 6.9, 3.7, 9.2]
>>> psutil.cpu_count(logical=False)
2
>>> psutil.cpu_freq()
scpufreq(current=931.42, min=800.0, max=3500.0)Memory
>>> psutil.virtual_memory()
svmem(total=10367352832, available=6472179712, percent=37.6, used=8186245120, free=2181107712, ...)
>>> psutil.swap_memory()
sswap(total=2097147904, used=296128512, free=1801019392, percent=14.1, sin=304193536, sout=677842944)Disks
>>> 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)Network
>>> psutil.net_io_counters(pernic=True)
{'eth0': netio(bytes_sent=485291293, bytes_recv=6004858642, ...),
'lo': netio(bytes_sent=2838627, bytes_recv=2838627, ...)}
>>> psutil.net_connections(kind='tcp')
[sconn(fd=115, family=2, type=1, laddr=addr(ip='10.0.0.1', port=48776), raddr=addr(ip='93.186.135.91', port=80), status='ESTABLISHED', pid=1254),
...]Sensors
>>> psutil.sensors_temperatures()
{'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_battery()
sbattery(percent=93, secsleft=16628, power_plugged=False)Processes
>>> p = psutil.Process(7055)
>>> p.name()
'python3'
>>> p.exe()
'/usr/bin/python3'
>>> p.cpu_percent(interval=1.0)
12.1
>>> p.memory_info()
pmem(rss=3164160, vms=4410163, shared=897433, text=302694, data=2422374)
>>> p.net_connections(kind='tcp')
[pconn(fd=115, family=2, type=1, laddr=addr(ip='10.0.0.1', port=48776), raddr=addr(ip='93.186.135.91', port=80), status='ESTABLISHED')]
>>> p.open_files()
[popenfile(path='/home/giampaolo/monit.py', fd=3, position=0, mode='r', flags=32768)]
>>>
>>> for p in psutil.process_iter(['pid', 'name']):
... print(p.pid, p.name())
...
1 systemd
2 kthreadd
3 ksoftirqd/0
...BSD-3
