wget https://pypi.python.org/packages/source/p/psutil/psutil-2.0.0.tar.gz
tar -xzvf psutil-2.0.0.tar.gz
cd psutil-2.0.0
python setup.py install

pip install psutil

import Psutil

>>> psutil.cpu_times()
scputimes(user=11677.09, nice=57.93, system=148675.58, idle=2167147.79, iowait=260828.48, irq=7876.28, softirq=0.0, steal=3694.59, guest=0.0, guest_nice=0.0)

>>> psutil.cpu_times(percpu=True)
[scputimes(user=11684.17, nice=57.93, system=148683.01, idle=2168982.08, iowait=260833.18, irq=7882.35, softirq=0.0, steal=3697.3, guest=0.0, guest_nice=0.0)]

>>> psutil.cpu_times().user
11684.4

>>> psutil.cpu_count()
1

>>> psutil.cpu_count(logical=False)
1

>>> import psutil
>>> mem = psutil.virtual_memory()
>>> mem
#系統(tǒng)內(nèi)存的所有信息
svmem(total=1040662528, available=175054848, percent=83.2, used=965718016, free=74944512, active=566755328, inactive=59457536, buffers=9342976, cached=90767360)

>>> mem.total
1040662528

>>> mem.used
965718016

>>> mem.free
112779264

>>> psutil.swap_memory()
sswap(total=0, used=0, free=0, percent=0, sin=0, sout=0)

psutil.disk_io_counters()

psutil.disk_partitions()

psutil.disk_usage('/')  #獲取/分區(qū)的狀態(tài)

psutil.disk_io_counters()

psutil.disk_io_counters(perdisk=True)  #perdisk=True參數(shù)獲取單個(gè)分區(qū)IO個(gè)數(shù)

psutil.net_io_counters()

psutil.net_io_counters(pernic=True) #pernic=True

psutil.users()

psutil.boot_time() #以linux時(shí)間格式返回
datetime.datetime.fromtimestamp(psutil.boot_time ()).strftime("%Y-%m-%d %H: %M: %S") #轉(zhuǎn)換成自然時(shí)間格式

psutil.pids()

p = psutil.Process(2423)
p.name()  #進(jìn)程名
p.exe()  #進(jìn)程的bin路徑
p.cwd()  #進(jìn)程的工作目錄絕對(duì)路徑
p.status()  #進(jìn)程狀態(tài)
p.create_time() #進(jìn)程創(chuàng)建時(shí)間
p.uids()  #進(jìn)程uid信息
p.gids()  #進(jìn)程的gid信息
p.cpu_times()  #進(jìn)程的cpu時(shí)間信息,包括user,system兩個(gè)cpu信息
p.cpu_affinity() #get進(jìn)程cpu親和度,如果要設(shè)置cpu親和度,將cpu號(hào)作為參考就好
p.memory_percent() #進(jìn)程內(nèi)存利用率
p.memory_info()  #進(jìn)程內(nèi)存rss,vms信息
p.io_counters()  #進(jìn)程的IO信息,包括讀寫(xiě)IO數(shù)字及參數(shù)
p.connectios()  #返回進(jìn)程列表
p.num_threads() #進(jìn)程開(kāi)啟的線程數(shù)
聽(tīng)過(guò)psutil的Popen方法啟動(dòng)應(yīng)用程序，可以跟蹤程序的相關(guān)信息
from subprocess import PIPE
p = psutil.Popen(["/usr/bin/python", "-c", "print('hello')"],stdout=PIPE)
p.name()
p.username()