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()

监控linux的系统资源和自定义进程。

填入要监控的进程 ，只要ps -ef的command中包含need_monitor_procces_names中的字符串就可以，也可以监控java  njinx。