使用psutil库监控linux的系统资源和自定义进程的cpu 内存占用。

 #coding=utf8

 import time

 import psutil

 from pprint import pprint

 from logger_until import  LoggerUntil

 logger = LoggerUntil(name="Monitor").getlog(logfilename='Monitor.log', loglevel=2, add_StreamHandler=1)

 need_monitor_procces_names = [

 'touna0627.py',

 'dailiip.py',

 'redis-server',

 'mongod',

 ]

 class Monitor(object):

     def __init__(self):

         self.specified_process_list = self.get_specified_process()

     def print_all_cmd_lines(self):

         pass

     def get_specified_process(self):

         all_pids = psutil.pids()

         process_list = []

         for pid in all_pids:

             p = psutil.Process(pid)

             p_cmdline = p.cmdline()

             for argx in p_cmdline:

                 for name in need_monitor_procces_names:

                     if argx.find(name) > -1:

                         if p.status() != 'stopped':

                             process_list.append(p)

         p_pid_set = set()

         process_list2 = []

         for p in process_list :

             if p.pid not in p_pid_set:

                 process_list2.append(p)

                 p_pid_set.add(p.pid)

         return  process_list2

 　　 @staticmethod

     def monitor_system():

         psutil.cpu_percent()

         time.sleep(1)

         mem = psutil.virtual_memory()

         mem_total = mem.total/1000000

         mem_available =mem.available/1000000

         mem_percent = str(mem.percent) + '%'

         cpu_count = psutil.cpu_count()

         cpu_percent = psutil.cpu_percent()

         msg = '本机总内存是：{0}M ， 本机可用内存是：{1}M， 本机内存使用率是：{2}， 本机cpu核数是：{3}， 本机cpu使用率是：{4}'.format(mem_total, mem_available, mem_percent,cpu_count,cpu_percent)

         logger.info(msg)

     def monitor_specified_process(self):

         for p in self.specified_process_list:

             p.cpu_percent(None)

         time.sleep(1)

         for p in self.specified_process_list:

             #p = psutil.Process(0)

             """:type :psutil.Process"""

             cmdline_str =' '.join(p.cmdline()).ljust(60,' ')

             p_cpu_percent_str = str(round(p.cpu_percent(),2)) +'%'

             p_memory_percent_str = str(round(p.memory_percent(),2)) + '%'

             p_strated_time = time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(p.create_time()))

             p_pid_str = str(p.pid)

             print p.status(),str(p.status())

             msg = '进程' + cmdline_str + ' 的pid是：' + p_pid_str  +'  cpu使用率是：' + p_cpu_percent_str + '  内存使用率是：' +  p_memory_percent_str \

             +'  进程的启动时间是：' + p_strated_time

             logger.info(msg)

 def monitoring():

     while 1:

         monitor = Monitor()

         monitor.monitor_system()

         monitor.monitor_specified_process()

         time.sleep(10)

 if __name__ == "__main__":

     monitoring()