Linux查看CPU、内存、IO占用高的进程

查看CPU占用高的top15进程

ps -eo pid,user,%cpu,%mem,argu --cols  | sort -nrk  | head -n 

查看内存占用高的top15进程

ps -eo pid,user,%cpu,%mem,argu --cols  | sort -nrk  | head -n 

查看IO占用高的top15进程

./ind_high_io_process.py 3 4 5。其中3表示间隔3秒获取一次数据。4表示获取读、写IO最高的前4个IO进程。5表示程序运行5次。

#!/bin/python

#-*- coding:utf-8 -*-

# Filename:    ind_high_io_process

# Revision:    1.0

# Date:        2013-3-8

# Author:      simonzhang

# web:         www.simonzhang.net

# Email:       [email protected]

### END INIT INFO

import os

import re

import sys

import time

from string import strip

sys_proc_path = '/proc/'

re_find_process_number = '^\d+$'

#Get IO information from /proc/$pid/io

def collect_info():

    _tmp = {}

    re_find_process_dir = re.compile(re_find_process_number)

    for i in os.listdir(sys_proc_path):

        if re_find_process_dir.search(i):

            #get process name from /proc/${pid}/stat

            process_name = open("%s%s/stat" % (sys_proc_path, i), "rb").read().split(" ")[1]

            # get io information from /proc/${pid}/io

            rw_io = open("%s%s/io" % (sys_proc_path, i), "rb").readlines()

            for _info in rw_io:

                cut_info = strip(_info).split(':')

                if strip(cut_info[0]) == "read_bytes":

                    read_io = int(strip(cut_info[1]))

                if strip(cut_info[0]) == "write_bytes":

                    write_io = int(strip(cut_info[1]))

            _tmp[i] = {"name":process_name, "read_bytes":read_io, "write_bytes":write_io}

    return _tmp

def main(_sleep_time, _list_num):

    _sort_read_dict = {}

    _sort_write_dict = {}

    #Get system io information

    process_info_list_frist = collect_info()

    time.sleep(_sleep_time)

    process_info_list_second = collect_info()

    for loop in process_info_list_second.keys():

        second_read_v = process_info_list_second[loop]["read_bytes"]

        second_write_v = process_info_list_second[loop]["write_bytes"]

        try:

            frist_read_v = process_info_list_frist[loop]["read_bytes"]

        except:

            frist_read_v = 0

        try:

            frist_write_v = process_info_list_frist[loop]["write_bytes"]

        except:

            frist_write_v = 0

        # compute

        _sort_read_dict[loop] = second_read_v - frist_read_v

        _sort_write_dict[loop] = second_write_v - frist_write_v

    # sort

    sort_read_dict = sorted(_sort_read_dict.items(),key=lambda _sort_read_dict:_sort_read_dict[1],reverse=True)

    sort_write_dict = sorted(_sort_write_dict.items(),key=lambda _sort_write_dict:_sort_write_dict[1],reverse=True)

    # print result

    print "pid     process     read(bytes) pid     process     write(btyes)"

    for _num in range(_list_num):

        read_pid = sort_read_dict[_num][0]

        write_pid = sort_write_dict[_num][0]

        res = "%s" % read_pid

        res += " " * (8 - len(read_pid)) + process_info_list_second[read_pid]["name"]

        res += " " * (12 - len(process_info_list_second[read_pid]["name"])) + "%s" % sort_read_dict[_num][1]

        res += " " * (12 - len("%s" % sort_read_dict[_num][1])) + write_pid

        res += " " * (8 - len(write_pid)) + process_info_list_second[write_pid]["name"]

        res += " " * (12 - len("%s" % process_info_list_second[write_pid]["name"])) + "%s" % sort_write_dict[_num][1]

        print res

    print "\n" * 1

if __name__ == '__main__':

    try:

        _sleep_time = sys.argv[1]

    except:

        _sleep_time = 3

    try:

        _num = sys.argv[2]

    except:

        _num = 3

    try:

        loop = sys.argv[3]

    except:

        loop = 1

    for i in range(int(loop)):

        main(int(_sleep_time), int(_num))

参考资料

https://zhidao.baidu.com/question/1882904486137130588.html