chaigang 2020-04-07
1 pip install psutil
In [2]: psutil.cpu_count() # CPU逻辑数量 Out[2]: 8 In [3]: psutil.cpu_count(logical=False) # CPU物理核心 Out[3]: 4 In [4]: psutil.cpu_times() # 统计CPU的用户/系统/空闲时间 Out[4]: scputimes(user=830519.73, nice=0.0, system=723038.84, idle=42315894.17) - 实现类似top命令的CPU使用率,每秒刷新一次,累计10次 In [6]: for x in range(10): ...: r = psutil.cpu_percent(interval=1, percpu=True) ...: print(r) ...: [19.0, 0.0, 12.7, 1.0, 8.0, 1.0, 4.0, 1.0] [20.0, 0.0, 12.1, 0.0, 8.0, 0.0, 4.0, 1.0] [32.0, 5.0, 23.0, 4.0, 19.0, 4.0, 16.0, 2.0] [20.0, 0.0, 15.0, 0.0, 7.1, 0.0, 5.9, 2.0] [24.8, 1.0, 14.9, 1.0, 9.0, 1.0, 8.1, 0.0] [34.0, 4.0, 27.0, 4.0, 24.8, 4.0, 17.8, 5.0] [28.7, 2.0, 20.0, 1.0, 13.0, 2.0, 11.0, 1.0] [21.0, 1.0, 15.8, 1.0, 10.9, 0.0, 6.9, 1.0] [22.0, 0.0, 14.9, 0.0, 9.0, 0.0, 7.0, 0.0] [25.0, 2.0, 15.2, 1.0, 11.0, 1.0, 5.0, 0.0]
In [7]: psutil.virtual_memory() # 获取物理内存信息 Out[7]: svmem(total=17179869184, available=5688819712, percent=66.9, used=9728593920, free=159133696, active=5531738112, inactive=5306654720, wired=4196855808) In [8]: psutil.swap_memory() # 获取交换内存信息 Out[8]: sswap(total=5368709120, used=4316463104, free=1052246016, percent=80.4, sin=659438723072, sout=4277862400) - 注意: 返回的是字节为单位的整数。 总内存17179869184/1024/1024/1024 = 16.0 G。
In [9]: psutil.disk_partitions() # 磁盘分区信息 Out[9]: [sdiskpart(device=‘/dev/disk1s1‘, mountpoint=‘/‘, fstype=‘apfs‘, opts=‘rw,local,rootfs,dovolfs,journaled,multilabel‘), sdiskpart(device=‘/dev/disk1s4‘, mountpoint=‘/private/var/vm‘, fstype=‘apfs‘, opts=‘rw,noexec,local,dovolfs,dontbrowse,journaled,multilabel,noatime‘)] - 有两个分区,磁盘格式apfs,opts中journaled表示支持日志。 In [10]: psutil.disk_usage(‘/‘) # 磁盘使用情况 Out[10]: sdiskusage(total=250685575168, used=118098038784, free=125440405504, percent=48.5) - 磁盘总共250685575168/1024/1024/1024233.469G,已使用48.5%。 In [11]: psutil.disk_io_counters() # 磁盘IO Out[11]: sdiskio(read_count=55081907, write_count=65301593, read_bytes=996595785728, write_bytes=1063386177536, read_time=18258582, write_time=10621452)
In [12]: psutil.net_io_counters() # 获取网络读写字节/包的个数 Out[12]: snetio(bytes_sent=80803235840, bytes_recv=124806110208, packets_sent=254195219, packets_recv=182450714, errin=0, errout=130782, dropin=0, dropout=0) In [13]: psutil.net_if_addrs() # 获取网络接口信息 In [14]: psutil.net_if_stats() # 获取网络接口状态 In [15]: psutil.net_connections() # 获取当前网络连接信息
In [16]: psutil.pids() # 所有进程ID Out[16]: [0,1,39,40, ...] In [17]: import os In [18]: os.getpid() Out[18]: 70042 In [19]: p = psutil.Process(os.getpid()) # 获取指定进程 In [20]: p.name() # 进程名称 Out[20]: ‘python3.7‘ In [21]: p.exe() # 进程exe路径 Out[21]: ‘/opt/anaconda3/bin/python3.7‘ In [22]: p.cwd() # 进程工作目录 Out[22]: ‘/Users/liuyouyuan/workspace/pyproject/scripts‘ In [23]: p.cmdline() # 进程启动的命令行 Out[23]: [‘/opt/anaconda3/bin/python‘, ‘/opt/anaconda3/bin/ipython‘] In [24]: p.ppid() # 父进程ID Out[24]: 46810 In [25]: p.parent() # 父进程 Out[25]: psutil.Process(pid=46810, name=‘zsh‘, started=‘2020-03-30 15:24:07‘) In [26]: p.children() # 子进程列表 Out[26]: [] In [27]: p.status() # 进程状态 Out[27]: ‘running‘ In [28]: p.username() # 进程用户名 Out[28]: ‘liuyouyuan‘ In [29]: p.create_time() # 进程创建时间 Out[29]: 1586241277.044256 In [30]: p.terminal() # 进程终端 Out[30]: ‘/dev/ttys003‘ In [31]: p.cpu_times() # 进程使用的CPU时间 Out[31]: pcputimes(user=3.119619328, system=0.63911072, children_user=0.0, children_system=0.0) In [32]: p.memory_info() # 进程使用的内存 Out[32]: pmem(rss=73498624, vms=4479959040, pfaults=28482, pageins=185) In [33]: p.open_files() # 进程打开的文件 Out[33]: [popenfile(path=‘/Applications/Visual Studio Code.app/Contents/Resources/electron.asar‘, fd=26), popenfile(path=‘/Applications/Visual Studio Code.app/Contents/Resources/app/node_modules.asar‘, fd=28), popenfile(path=‘/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/Resources/English.lproj/Localized.rsrc‘, fd=33)] In [34]: p.connections() # 进程相关网络连接 Out[34]: [] In [35]: p.num_threads() # 进程的线程数量 Out[35]: 6 In [36]: p.threads() # 所有线程信息 Out[36]: [pthread(id=1, user_time=3.008698, system_time=0.4743), pthread(id=2, user_time=0.008189, system_time=0.028232), pthread(id=3, user_time=3.7e-05, system_time=2.4e-05), pthread(id=4, user_time=3.8e-05, system_time=2.5e-05), pthread(id=5, user_time=3.3e-05, system_time=1.6e-05), pthread(id=6, user_time=2e-05, system_time=1.7e-05)] In [37]: p.environ() # 进程环境变量 Out[37]: {‘TMPDIR‘: ‘/var/folders/ys/hf5c1mt91qgdq3r803d6qdq80000gn/T/‘, ‘__CF_USER_TEXT_ENCODING‘: ‘0x1F5:0x19:0x34‘, ‘SHELL‘: ‘/bin/zsh‘, ... ‘_‘: ‘/opt/anaconda3/bin/ipython‘} In [38]: p.terminate() # 结束进程 [1] 70042 terminated ipython (base)
6 参考
https://www.liaoxuefeng.com/wiki/1016959663602400/1183565811281984