python psutil库的使用示例-巨人网络通讯

python psutil库的使用示例

CPU信息

CPU占用率

>>> psutil.cpu_percent(interval=5)
12.9

CPU频率

>>> psutil.cpu_freq()
scpufreq(current=2300, min=2300, max=2300)

CPU load

>>> psutil.getloadavg()
(2.21044921875, 2.4814453125, 2.74609375)

内存信息

内存使用状况

>>> psutil.virtual_memory()
svmem(total=8589934592, available=1664913408, percent=80.6, used=5807058944, free=15069184, active=1651421184, inactive=1649065984, wired=4155637760)

磁盘

磁盘分区信息

>>> psutil.disk_partitions()
[sdiskpart(device='/dev/disk1s5', mountpoint='/', fstype='apfs', opts='ro,local,rootfs,dovolfs,journaled,multilabel', maxfile=255, maxpath=1024), ...]

磁盘占用率

>>> psutil.disk_usage('/')
sdiskusage(total=250685575168, used=11233398784, free=14531440640, percent=43.6)

磁盘IO

>>> psutil.disk_io_counters()
sdiskio(read_count=190236826, write_count=110716593, read_bytes=11349786423296, write_bytes=9505852936192, read_time=165443373, write_time=100234117)

网络

网络连接 (netstat)

>>> import psutil
>>> psutil.net_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', pid=1254),
 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', pid=2987),
 pconn(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),
 pconn(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)
 ...]

网络接口（ifconfig)

>>> 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)]}

其它系统信息

电池

>>> psutil.sensors_battery()
sbattery(percent=93, secsleft=15420, power_plugged=False)

当前用户

>>> psutil.users()
[suser(name='myname', terminal='console', host=None, started=1604809088.0, pid=180), suser(name='yuliji', terminal='ttys012', host=None, started=1615375616.0, pid=13894)]

进程信息

PID

>>> psutil.pids()
[1, 2, 3, 5, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, ..., 32498]

所有进程

>>> for proc in psutil.process_iter(['pid', 'name', 'username']):
...  print(proc.info)
...
{'name': 'systemd', 'pid': 1, 'username': 'root'}
{'name': 'kthreadd', 'pid': 2, 'username': 'root'}
{'name': 'ksoftirqd/0', 'pid': 3, 'username': 'root'}

详细文档，请参考： psutil.readthedocs.io/en/latest/

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