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。