Debian 8 服务器负载过高,原因是什么?

Debian 8 服务器负载过高,原因是什么?
  • 德班8
  • 1分钟平均服务器负载:39

就在那一刻,我运行了几个命令并将输出保存到文件中(我在此处介绍)。

怎么了?这种非常高的负载每周随机发生几次:

顶部-b-n 1 |头 -n 20

top - 11:07:25 up 25 days,  1:57,  1 user,  load average: 39,14, 11,17, 4,16
Tasks: 148 total,  43 running, 104 sleeping,   0 stopped,   1 zombie
%Cpu(s): 11,0 us,  2,3 sy,  0,0 ni, 86,2 id,  0,1 wa,  0,0 hi,  0,3 si,  0,0 st
KiB Mem:   3853724 total,  2984252 used,   869472 free,    33592 buffers
KiB Swap:        0 total,        0 used,        0 free,   225136 cached

  PID USER      PR  NI  VIRT  RES  SHR S  %CPU %MEM    TIME+  COMMAND
23748 www-data  20   0  811m  73m  33m R   6,2  1,9   0:02.32 apache2
23819 www-data  20   0  593m  70m  32m R   6,2  1,9   0:01.41 apache2
23820 www-data  20   0  810m 112m  33m S   6,2  3,0   0:01.94 apache2
23891 www-data  20   0  459m  67m  29m R   6,2  1,8   0:01.12 apache2
 1201 root      20   0     0    0    0 S   3,1  0,0   5:57.44 jbd2/xvdb1-8
23708 www-data  20   0  670m  76m  35m R   3,1  2,0   0:03.63 apache2
23738 www-data  20   0  740m  79m  37m R   3,1  2,1   0:04.85 apache2
23783 www-data  20   0  740m  83m  34m R   3,1  2,2   0:02.54 apache2
23796 www-data  20   0  596m  90m  33m R   3,1  2,4   0:02.10 apache2
23797 www-data  20   0  670m  73m  33m R   3,1  2,0   0:02.13 apache2
23805 www-data  20   0  595m  91m  34m R   3,1  2,4   0:01.70 apache2
23806 www-data  20   0  816m 104m  32m S   3,1  2,8   0:01.87 apache2
23807 www-data  20   0  812m  74m  35m R   3,1  2,0   0:02.03 apache2    

自由-m

             total       used       free     shared    buffers     cached
Mem:          3763       2946        817          0         33        221
-/+ buffers/cache:       2691       1071
Swap:            0          0          0

iostat

Linux 3.2.0-4-amd64 (sntc)  29/10/17    _x86_64_    (2 CPU)

avg-cpu:  %user   %nice %system %iowait  %steal   %idle
          10,99    0,00    2,66    0,13    0,01   86,21

Device:            tps    kB_read/s    kB_wrtn/s    kB_read    kB_wrtn
xvdap1           12,40        17,30       198,41   37492508  429964572
xvdb             12,33        22,50       459,16   48759538  995030028
xvdc              0,60        12,55        13,34   27186977   28917504
xvdf              5,52        36,06        56,61   78147255  122670146

聚苯乙烯-EV

  PID TTY      STAT   TIME  MAJFL   TRS   DRS   RSS %MEM COMMAND
    1 ?        Ss     0:16     52    32 15447   724  0.0 init [2]         
    2 ?        S      0:00      0     0     0     0  0.0 [kthreadd]
    3 ?        S      0:53      0     0     0     0  0.0 [ksoftirqd/0]
    5 ?        S      0:00      0     0     0     0  0.0 [kworker/u:0]
    6 ?        S      0:02      0     0     0     0  0.0 [migration/0]
    7 ?        S      0:06      0     0     0     0  0.0 [watchdog/0]
    8 ?        S      0:02      0     0     0     0  0.0 [migration/1]
    9 ?        S      0:00      0     0     0     0  0.0 [kworker/1:0]
   10 ?        S      0:47      0     0     0     0  0.0 [ksoftirqd/1]
   11 ?        S      0:05      0     0     0     0  0.0 [watchdog/1]
   12 ?        S<     0:00      0     0     0     0  0.0 [cpuset]
   13 ?        S<     0:00      0     0     0     0  0.0 [khelper]
   14 ?        S      0:00      0     0     0     0  0.0 [kdevtmpfs]
   15 ?        S<     0:00      0     0     0     0  0.0 [netns]
   16 ?        S      0:00      0     0     0     0  0.0 [xenwatch]
   17 ?        S      0:00      0     0     0     0  0.0 [xenbus]
   18 ?        S      0:04      0     0     0     0  0.0 [sync_supers]
   19 ?        S      0:00      0     0     0     0  0.0 [bdi-default]
   20 ?        S<     0:00      0     0     0     0  0.0 [kintegrityd]
   21 ?        S<     0:00      0     0     0     0  0.0 [kblockd]
   22 ?        S      2:11      0     0     0     0  0.0 [kworker/1:1]
   23 ?        S      0:00      0     0     0     0  0.0 [khungtaskd]
   24 ?        S      1:03      0     0     0     0  0.0 [kswapd0]
   25 ?        SN     0:00      0     0     0     0  0.0 [ksmd]
   26 ?        S      0:00      0     0     0     0  0.0 [fsnotify_mark]
   27 ?        S<     0:00      0     0     0     0  0.0 [crypto]
   30 ?        S      0:00      0     0     0     0  0.0 [khvcd]
  115 ?        S      1:47      0     0     0     0  0.0 [jbd2/xvda1-8]
  116 ?        S<     0:00      0     0     0     0  0.0 [ext4-dio-unwrit]
  256 ?        Ss     0:00      2   143 23728   376  0.0 udevd --daemon
  338 ?        S      0:00      0     0     0     0  0.0 [kworker/u:1]
 1201 ?        S      5:57      0     0     0     0  0.0 [jbd2/xvdb1-8]
 1202 ?        S<     0:00      0     0     0     0  0.0 [ext4-dio-unwrit]
 1203 ?        S      0:02      0     0     0     0  0.0 [jbd2/xvdc1-8]
 1204 ?        S<     0:00      0     0     0     0  0.0 [ext4-dio-unwrit]
 1205 ?        S      1:29      0     0     0     0  0.0 [jbd2/xvdf5-8]
 1206 ?        S<     0:00      0     0     0     0  0.0 [ext4-dio-unwrit]
 1207 ?        S      0:37      0     0     0     0  0.0 [jbd2/xvdf6-8]
 1208 ?        S<     0:00      0     0     0     0  0.0 [ext4-dio-unwrit]
 1209 ?        S      0:00      0     0     0     0  0.0 [jbd2/xvdf7-8]
 1210 ?        S<     0:00      0     0     0     0  0.0 [ext4-dio-unwrit]
 1211 ?        S      0:00      0     0     0     0  0.0 [jbd2/xvdf8-8]
 1212 ?        S<     0:00      0     0     0     0  0.0 [ext4-dio-unwrit]
 1213 ?        S      0:00      0     0     0     0  0.0 [jbd2/xvdf9-8]
 1214 ?        S<     0:00      0     0     0     0  0.0 [ext4-dio-unwrit]
 1447 ?        Ss     0:00     26    64  8447   152  0.0 /sbin/dhcpcd-bin -h sntc -Y -N eth0
 1585 ?        S      0:03      0     0     0     0  0.0 [kworker/0:1]
 1594 ?        Sl     2:13    336   346 249749 5212  0.1 /usr/sbin/rsyslogd -c5
 1666 ?        S      2:07      0     0     0     0  0.0 [flush-202:1]
 1667 ?        S     13:58      0     0     0     0  0.0 [flush-202:16]
 1669 ?        S      0:19      0     0     0     0  0.0 [flush-202:80]
 1733 ?        Ss     0:00     13    18 16781   164  0.0 /usr/sbin/atd
 1852 ?        Ss     1:16    243   494 32877   624  0.0 /usr/sbin/ntpd -p /var/run/ntpd.pid -g -u 102:104
 1950 ?        Sl     4:45   1165  2392 195875 6380  0.1 /usr/bin/python /usr/bin/fail2ban-server -b -s /var/run/fail2ban/fail2ban.sock
 1984 ?        S      0:42    141    84 22543   572  0.0 /usr/lib/gamin/gam_server
 4507 ?        S      0:00      0   109  4218   652  0.0 /bin/sh /usr/bin/mysqld_safe
 4599 ?        Ss     0:26     14    38 25245   416  0.0 /usr/sbin/cron
 4854 ?        Sl    17:48    305 10472 1337691 205796  5.3 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib/mysql/plugin --user=mysql --log-error=/var/log/mysql/error.log --pid-file=/var/run/mysqld/mysqld.pid --socket=/var/run/mysqld/mysqld.sock --port=3306
 6594 ?        Sl     0:46    131    93 329398  500  0.0 /usr/bin/memcached -m 512 -p 11211 -u nobody -l 127.0.0.1
 9452 ?        S<L    0:01      1   149 17622  5500  0.1 /usr/bin/atop -a -w /var/log/atop/atop_20171029 600
15494 ?        Ss     2:16     76   618 441641 51568  1.3 /usr/sbin/apache2 -k start
15803 ?        Ss     0:05      3    33 36122  1412  0.0 /usr/lib/postfix/master
15807 ?        S      0:01      6    57 38322  1688  0.0 qmgr -l -t fifo -u
17826 ?        Ss     0:00      3   492 52211  1188  0.0 /usr/sbin/sshd
19834 ?        S      0:00      0     0     0     0  0.0 [kworker/0:0]
20494 ?        S      0:00     16    15 42432  1160  0.0 tlsmgr -l -t unix -u -c
23617 ?        Sl     0:04     20   618 740613 60132  1.5 /usr/sbin/apache2 -k start
23635 ?        S      0:00      0    10 38209  1132  0.0 anvil -l -t unix -u -c
23699 ?        Sl     0:04      8   618 820581 88384  2.2 /usr/sbin/apache2 -k start
23708 ?        Rl     0:03     10   618 686101 78032  2.0 /usr/sbin/apache2 -k start
23738 ?        Rl     0:04     10   618 758125 80936  2.1 /usr/sbin/apache2 -k start
23740 ?        Rl     0:03      5   618 610873 77436  2.0 /usr/sbin/apache2 -k start
23748 ?        Rl     0:02      7   618 830121 74928  1.9 /usr/sbin/apache2 -k start
23777 ?        S      0:00      2     9 38210  1148  0.0 pickup -l -t fifo -u -c
23783 ?        Rl     0:02     18   618 757709 85956  2.2 /usr/sbin/apache2 -k start
23787 ?        Sl     0:02      6   618 683949 76724  1.9 /usr/sbin/apache2 -k start
23788 ?        Rl     0:02     11   618 833877 98932  2.5 /usr/sbin/apache2 -k start
23793 ?        Rl     0:02     13   618 681797 72728  1.8 /usr/sbin/apache2 -k start
23795 ?        Sl     0:02     15   618 760273 78120  2.0 /usr/sbin/apache2 -k start
23796 ?        Sl     0:02      8   618 610017 93136  2.4 /usr/sbin/apache2 -k start
23797 ?        Rl     0:02      6   618 686101 75704  1.9 /usr/sbin/apache2 -k start
23802 ?        Sl     0:02     43   618 682725 124560  3.2 /usr/sbin/apache2 -k start
23805 ?        Rl     0:01      3   618 608885 93768  2.4 /usr/sbin/apache2 -k start
23806 ?        Sl     0:01     14   618 835453 107016  2.7 /usr/sbin/apache2 -k start
23807 ?        Sl     0:02     41   618 831877 76600  1.9 /usr/sbin/apache2 -k start
23808 ?        Rl     0:01     13   618 756437 92128  2.3 /usr/sbin/apache2 -k start
23810 ?        Sl     0:01      9   618 609357 74208  1.9 /usr/sbin/apache2 -k start
23817 ?        Rl     0:02      3   618 825697 81764  2.1 /usr/sbin/apache2 -k start
23819 ?        Rl     0:01      6   618 607533 72188  1.8 /usr/sbin/apache2 -k start
23820 ?        Sl     0:01     10   618 829533 115084  2.9 /usr/sbin/apache2 -k start
23821 ?        Sl     0:01      7   618 591217 52444  1.3 /usr/sbin/apache2 -k start
23823 ?        Rl     0:01     10   618 608889 92152  2.3 /usr/sbin/apache2 -k start
23824 ?        Z      0:01      6     0     0     0  0.0 [apache2] <defunct>
23827 ?        R      0:01      8   618 466189 68584  1.7 /usr/sbin/apache2 -k start
23828 ?        Rl     0:01     19   618 757573 93540  2.4 /usr/sbin/apache2 -k start
23829 ?        Sl     0:01     30   618 684861 78796  2.0 /usr/sbin/apache2 -k start
23830 ?        Rl     0:01     10   618 608889 91908  2.3 /usr/sbin/apache2 -k start
23832 ?        Sl     0:01     10   618 683041 64844  1.6 /usr/sbin/apache2 -k start
23833 ?        Rl     0:01      4   618 756401 94052  2.4 /usr/sbin/apache2 -k start
23835 ?        Rl     0:01      7   618 744637 64920  1.6 /usr/sbin/apache2 -k start
23843 ?        Rl     0:01      9   618 607557 90052  2.3 /usr/sbin/apache2 -k start
23844 ?        Sl     0:01      0   618 682501 74080  1.9 /usr/sbin/apache2 -k start
23847 ?        Sl     0:01      9   618 830045 79984  2.0 /usr/sbin/apache2 -k start
23848 ?        Sl     0:01      7   618 608637 91384  2.3 /usr/sbin/apache2 -k start
23849 ?        R      0:01      4   618 467569 71308  1.8 /usr/sbin/apache2 -k start
23850 ?        Rl     0:01      5   618 683589 72724  1.8 /usr/sbin/apache2 -k start
23854 ?        R      0:01      6   618 469693 68732  1.7 /usr/sbin/apache2 -k start
23855 ?        Rl     0:01      5   618 608837 74208  1.9 /usr/sbin/apache2 -k start
23856 ?        Rl     0:01      3   618 607517 71364  1.8 /usr/sbin/apache2 -k start
23857 ?        R      0:01      2   618 469869 70996  1.8 /usr/sbin/apache2 -k start
23858 ?        Sl     0:01      4   618 611705 76488  1.9 /usr/sbin/apache2 -k start
23860 ?        Sl     0:01      3   618 681249 74212  1.9 /usr/sbin/apache2 -k start
23862 ?        Rl     0:01      2   618 755493 83120  2.1 /usr/sbin/apache2 -k start
23864 ?        Sl     0:00      7   618 607529 71348  1.8 /usr/sbin/apache2 -k start
23870 ?        R      0:01     15   618 469161 69868  1.8 /usr/sbin/apache2 -k start
23872 ?        Sl     0:01     18   618 537669 81988  2.1 /usr/sbin/apache2 -k start
23873 ?        R      0:01      4   618 471633 71352  1.8 /usr/sbin/apache2 -k start
23874 ?        Sl     0:01      5   618 609809 85048  2.2 /usr/sbin/apache2 -k start
23875 ?        Rl     0:01     29   618 680925 69496  1.8 /usr/sbin/apache2 -k start
23876 ?        Rl     0:01      2   618 833901 77692  2.0 /usr/sbin/apache2 -k start
23882 ?        R      0:00     14   618 462697 61192  1.5 /usr/sbin/apache2 -k start
23885 ?        R      0:01      3   618 471633 71408  1.8 /usr/sbin/apache2 -k start
23889 ?        Rl     0:01      2   618 607797 71892  1.8 /usr/sbin/apache2 -k start
23891 ?        R      0:01      8   618 469409 69152  1.7 /usr/sbin/apache2 -k start
23894 ?        Sl     0:01      6   618 831525 78024  2.0 /usr/sbin/apache2 -k start
23895 ?        R      0:00      0   618 467553 68940  1.7 /usr/sbin/apache2 -k start
23896 ?        R      0:01     28   618 469789 70852  1.8 /usr/sbin/apache2 -k start
23897 ?        Sl     0:00     25   618 664033 50848  1.3 /usr/sbin/apache2 -k start
23908 ?        Sl     0:00      8   618 608837 74644  1.9 /usr/sbin/apache2 -k start
23911 ?        R      0:00      5   618 461933 62404  1.6 /usr/sbin/apache2 -k start
23912 ?        Sl     0:00      0   618 536837 87128  2.2 /usr/sbin/apache2 -k start
23918 ?        R      0:00      4   618 450233 40728  1.0 /usr/sbin/apache2 -k start
23920 ?        R      0:00      2   618 469321 72120  1.8 /usr/sbin/apache2 -k start
23922 ?        Rl     0:00      7   618 606693 69520  1.8 /usr/sbin/apache2 -k start
23923 ?        Rl     0:00      8   618 600745 68700  1.7 /usr/sbin/apache2 -k start
23957 ?        S      0:00     18    38 37909  1220  0.0 /USR/SBIN/CRON
23958 ?        Ss     0:00      3   109  4218   644  0.0 /bin/sh -c    /var/scripts/arregla_permisos_www.sh >/dev/null 2>&1
23963 ?        S      0:00     18   966 13469  1228  0.0 /bin/bash /var/scripts/arregla_permisos_www.sh
23968 ?        R      0:00      1    50  7049   816  0.0 chmod -R 770 /var/www/
23980 ?        Ss     0:00     10   492 71463  3684  0.0 sshd: root@pts/0 
23982 ?        S      0:00      2    21 38210  2344  0.0 trivial-rewrite -n rewrite -t unix -u -c
23984 ?        S      0:00      4   104 42443  2672  0.0 smtp -t unix -u -c
23985 ?        S      0:00      0   104 42443  2672  0.0 smtp -t unix -u -c
23988 ?        S      0:00      1    40 38215  2356  0.0 bounce -z -n defer -t unix -u -c
23990 pts/0    Ss     0:00      2   966 23365  3456  0.0 -bash
24085 pts/0    S+     0:00      0   966 13477  1452  0.0 /bin/bash /var/scripts/diagnosis_instantanea.sh
24092 pts/0    R+     0:00      1    84  9763   868  0.0 ps -e v

PS 辅助wwwf

USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root         2  0.0  0.0      0     0 ?        S    oct04   0:00 [kthreadd]
root         3  0.0  0.0      0     0 ?        S    oct04   0:53  \_ [ksoftirqd/0]
root         5  0.0  0.0      0     0 ?        S    oct04   0:00  \_ [kworker/u:0]
root         6  0.0  0.0      0     0 ?        S    oct04   0:02  \_ [migration/0]
root         7  0.0  0.0      0     0 ?        S    oct04   0:06  \_ [watchdog/0]
root         8  0.0  0.0      0     0 ?        S    oct04   0:02  \_ [migration/1]
root         9  0.0  0.0      0     0 ?        S    oct04   0:00  \_ [kworker/1:0]
root        10  0.0  0.0      0     0 ?        S    oct04   0:47  \_ [ksoftirqd/1]
root        11  0.0  0.0      0     0 ?        S    oct04   0:05  \_ [watchdog/1]
root        12  0.0  0.0      0     0 ?        S<   oct04   0:00  \_ [cpuset]
root        13  0.0  0.0      0     0 ?        S<   oct04   0:00  \_ [khelper]
root        14  0.0  0.0      0     0 ?        S    oct04   0:00  \_ [kdevtmpfs]
root        15  0.0  0.0      0     0 ?        S<   oct04   0:00  \_ [netns]
root        16  0.0  0.0      0     0 ?        S    oct04   0:00  \_ [xenwatch]
root        17  0.0  0.0      0     0 ?        S    oct04   0:00  \_ [xenbus]
root        18  0.0  0.0      0     0 ?        S    oct04   0:04  \_ [sync_supers]
root        19  0.0  0.0      0     0 ?        S    oct04   0:00  \_ [bdi-default]
root        20  0.0  0.0      0     0 ?        S<   oct04   0:00  \_ [kintegrityd]
root        21  0.0  0.0      0     0 ?        S<   oct04   0:00  \_ [kblockd]
root        22  0.0  0.0      0     0 ?        S    oct04   2:11  \_ [kworker/1:1]
root        23  0.0  0.0      0     0 ?        S    oct04   0:00  \_ [khungtaskd]
root        24  0.0  0.0      0     0 ?        S    oct04   1:03  \_ [kswapd0]
root        25  0.0  0.0      0     0 ?        SN   oct04   0:00  \_ [ksmd]
root        26  0.0  0.0      0     0 ?        S    oct04   0:00  \_ [fsnotify_mark]
root        27  0.0  0.0      0     0 ?        S<   oct04   0:00  \_ [crypto]
root        30  0.0  0.0      0     0 ?        S    oct04   0:00  \_ [khvcd]
root       115  0.0  0.0      0     0 ?        S    oct04   1:47  \_ [jbd2/xvda1-8]
root       116  0.0  0.0      0     0 ?        S<   oct04   0:00  \_ [ext4-dio-unwrit]
root       338  0.0  0.0      0     0 ?        S    oct04   0:00  \_ [kworker/u:1]
root      1201  0.0  0.0      0     0 ?        S    oct04   5:57  \_ [jbd2/xvdb1-8]
root      1202  0.0  0.0      0     0 ?        S<   oct04   0:00  \_ [ext4-dio-unwrit]
root      1203  0.0  0.0      0     0 ?        S    oct04   0:02  \_ [jbd2/xvdc1-8]
root      1204  0.0  0.0      0     0 ?        S<   oct04   0:00  \_ [ext4-dio-unwrit]
root      1205  0.0  0.0      0     0 ?        S    oct04   1:29  \_ [jbd2/xvdf5-8]
root      1206  0.0  0.0      0     0 ?        S<   oct04   0:00  \_ [ext4-dio-unwrit]
root      1207  0.0  0.0      0     0 ?        S    oct04   0:37  \_ [jbd2/xvdf6-8]
root      1208  0.0  0.0      0     0 ?        S<   oct04   0:00  \_ [ext4-dio-unwrit]
root      1209  0.0  0.0      0     0 ?        S    oct04   0:00  \_ [jbd2/xvdf7-8]
root      1210  0.0  0.0      0     0 ?        S<   oct04   0:00  \_ [ext4-dio-unwrit]
root      1211  0.0  0.0      0     0 ?        S    oct04   0:00  \_ [jbd2/xvdf8-8]
root      1212  0.0  0.0      0     0 ?        S<   oct04   0:00  \_ [ext4-dio-unwrit]
root      1213  0.0  0.0      0     0 ?        S    oct04   0:00  \_ [jbd2/xvdf9-8]
root      1214  0.0  0.0      0     0 ?        S<   oct04   0:00  \_ [ext4-dio-unwrit]
root      1666  0.0  0.0      0     0 ?        S    oct04   2:07  \_ [flush-202:1]
root      1667  0.0  0.0      0     0 ?        S    oct04  13:58  \_ [flush-202:16]
root      1669  0.0  0.0      0     0 ?        S    oct04   0:19  \_ [flush-202:80]
root      1585  0.0  0.0      0     0 ?        S    oct28   0:03  \_ [kworker/0:1]
root     19834  0.0  0.0      0     0 ?        S    09:35   0:00  \_ [kworker/0:0]
root         1  0.0  0.0  15480   724 ?        Ss   oct04   0:16 init [2]         
root       256  0.0  0.0  23872   376 ?        Ss   oct04   0:00 udevd --daemon
root      1447  0.0  0.0   8512   152 ?        Ss   oct04   0:00 /sbin/dhcpcd-bin -h sntc -Y -N eth0
root      1594  0.0  0.1 250096  5212 ?        Sl   oct04   2:13 /usr/sbin/rsyslogd -c5
daemon    1733  0.0  0.0  16800   164 ?        Ss   oct04   0:00 /usr/sbin/atd
ntp       1852  0.0  0.0  33372   624 ?        Ss   oct04   1:16 /usr/sbin/ntpd -p /var/run/ntpd.pid -g -u 102:104
root      1950  0.0  0.1 198268  6380 ?        Sl   oct04   4:45 /usr/bin/python /usr/bin/fail2ban-server -b -s /var/run/fail2ban/fail2ban.sock
root      1984  0.0  0.0  22628   572 ?        S    oct04   0:42 /usr/lib/gamin/gam_server
root      4599  0.0  0.0  25284   416 ?        Ss   oct04   0:26 /usr/sbin/cron
root     23957  0.0  0.0  37948  1220 ?        S    11:07   0:00  \_ /USR/SBIN/CRON
root     23958  0.0  0.0   4328   644 ?        Ss   11:07   0:00      \_ /bin/sh -c    /var/scripts/arregla_permisos_www.sh >/dev/null 2>&1
root     23963  0.0  0.0  14436  1228 ?        S    11:07   0:00          \_ /bin/bash /var/scripts/arregla_permisos_www.sh
root     23968  2.9  0.0   7100   816 ?        R    11:07   0:00              \_ chmod -R 770 /var/www/
nobody    6594  0.0  0.0 329492   500 ?        Sl   oct10   0:46 /usr/bin/memcached -m 512 -p 11211 -u nobody -l 127.0.0.1
root      4507  0.0  0.0   4328   652 ?        S    oct27   0:00 /bin/sh /usr/bin/mysqld_safe
mysql     4854  0.6  5.3 1348164 205860 ?      Sl   oct27  17:48  \_ /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib/mysql/plugin --user=mysql --log-error=/var/log/mysql/error.log --pid-file=/var/run/mysqld/mysqld.pid --socket=/var/run/mysqld/mysqld.sock --port=3306
root     15494  0.0  1.3 442260 51568 ?        Ss   oct27   2:16 /usr/sbin/apache2 -k start
www-data 23617  2.5  1.5 741232 60132 ?        Sl   11:04   0:04  \_ /usr/sbin/apache2 -k start
www-data 23699  3.9  2.2 821200 88384 ?        Sl   11:05   0:04  \_ /usr/sbin/apache2 -k start
www-data 23708  2.9  1.7 674688 66688 ?        Rl   11:05   0:03  \_ /usr/sbin/apache2 -k start
www-data 23738  4.9  2.1 758744 80936 ?        Rl   11:05   0:04  \_ /usr/sbin/apache2 -k start
www-data 23740  3.3  2.0 611488 77436 ?        Rl   11:05   0:03  \_ /usr/sbin/apache2 -k start
www-data 23748  2.4  1.9 830740 74928 ?        Rl   11:05   0:02  \_ /usr/sbin/apache2 -k start
www-data 23783  4.2  2.2 758328 85956 ?        Rl   11:06   0:02  \_ /usr/sbin/apache2 -k start
www-data 23787  3.6  1.9 684568 76724 ?        Sl   11:06   0:02  \_ /usr/sbin/apache2 -k start
www-data 23788  4.1  2.5 834496 98932 ?        Rl   11:06   0:02  \_ /usr/sbin/apache2 -k start
www-data 23793  3.5  1.8 682416 72728 ?        Rl   11:06   0:02  \_ /usr/sbin/apache2 -k start
www-data 23795  3.5  2.0 760892 78120 ?        Sl   11:06   0:02  \_ /usr/sbin/apache2 -k start
www-data 23796  3.6  2.4 610636 93136 ?        Sl   11:06   0:02  \_ /usr/sbin/apache2 -k start
www-data 23797  3.6  1.9 686720 75704 ?        Rl   11:06   0:02  \_ /usr/sbin/apache2 -k start
www-data 23802  3.9  3.2 683344 124560 ?       Sl   11:06   0:02  \_ /usr/sbin/apache2 -k start
www-data 23805  2.9  2.4 609504 93768 ?        Rl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23806  3.3  2.0 622616 79256 ?        Sl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23807  3.5  1.9 832496 76600 ?        Sl   11:06   0:02  \_ /usr/sbin/apache2 -k start
www-data 23808  2.9  2.3 757056 92128 ?        Rl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23810  2.1  1.9 609976 74208 ?        Sl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23817  3.5  2.1 826828 82556 ?        Rl   11:06   0:02  \_ /usr/sbin/apache2 -k start
www-data 23819  2.5  1.8 608152 72188 ?        Rl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23820  3.4  2.4 830152 96148 ?        Sl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23821  3.0  1.3 591836 52444 ?        Sl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23823  3.1  2.3 609508 92416 ?        Rl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23827  2.4  1.8 468088 70168 ?        R    11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23828  3.2  2.4 758192 93540 ?        Rl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23829  2.4  2.0 685480 79588 ?        Sl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23830  3.1  2.3 610384 92432 ?        Rl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23832  1.9  1.7 683660 67220 ?        Sl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23833  3.1  2.4 757420 94052 ?        Rl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23835  2.7  1.7 746280 65712 ?        Rl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23843  2.8  2.3 608176 90052 ?        Rl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23844  2.6  1.9 683120 74080 ?        Sl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23847  2.5  2.0 830664 80776 ?        Sl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23848  2.6  2.3 609256 91384 ?        Sl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23849  2.7  1.8 468188 71308 ?        R    11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23850  2.8  1.8 684208 72724 ?        Rl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23854  2.7  1.7 470312 68732 ?        R    11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23855  2.5  1.9 609456 74208 ?        Rl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23856  2.6  1.8 608136 71364 ?        Rl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23857  2.7  1.8 470488 70996 ?        R    11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23858  2.5  1.9 612324 76488 ?        Sl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23860  2.5  1.9 681868 75532 ?        Sl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23862  2.8  2.1 756112 83120 ?        Rl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23864  2.1  1.8 608148 71348 ?        Sl   11:06   0:00  \_ /usr/sbin/apache2 -k start
www-data 23870  2.4  1.8 469780 69868 ?        R    11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23872  2.4  2.2 538288 85420 ?        Sl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23873  2.7  1.8 472252 71352 ?        R    11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23874  4.0  2.3 610428 88744 ?        Sl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23875  2.5  1.8 683228 70612 ?        Rl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23876  2.5  2.0 834520 77692 ?        Rl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23882  1.9  1.6 464340 62248 ?        R    11:06   0:00  \_ /usr/sbin/apache2 -k start
www-data 23885  3.2  1.8 472252 71408 ?        R    11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23889  2.6  1.8 608416 71892 ?        Rl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23891  2.6  1.7 470028 69152 ?        R    11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23894  4.7  2.0 832144 78816 ?        Sl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23895  1.7  1.7 468172 68940 ?        R    11:06   0:00  \_ /usr/sbin/apache2 -k start
www-data 23896  2.6  1.8 471232 71644 ?        S    11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23897  1.2  1.3 664652 50848 ?        Sl   11:06   0:00  \_ /usr/sbin/apache2 -k start
www-data 23908  2.5  1.9 609456 74644 ?        Sl   11:06   0:00  \_ /usr/sbin/apache2 -k start
www-data 23911  2.2  1.6 462552 62668 ?        R    11:06   0:00  \_ /usr/sbin/apache2 -k start
www-data 23912  2.8  2.3 537456 90296 ?        Sl   11:06   0:01  \_ /usr/sbin/apache2 -k start
www-data 23918  0.3  1.0 452388 41720 ?        R    11:06   0:00  \_ /usr/sbin/apache2 -k start
www-data 23920  2.3  1.8 470140 72120 ?        R    11:06   0:00  \_ /usr/sbin/apache2 -k start
www-data 23922  1.7  1.8 607312 70044 ?        Rl   11:06   0:00  \_ /usr/sbin/apache2 -k start
www-data 23923  2.9  1.8 602388 69756 ?        Rl   11:06   0:00  \_ /usr/sbin/apache2 -k start
root     15803  0.0  0.0  36156  1412 ?        Ss   oct27   0:05 /usr/lib/postfix/master
postfix  15807  0.0  0.0  38380  1688 ?        S    oct27   0:01  \_ qmgr -l -t fifo -u
postfix  20494  0.0  0.0  42448  1160 ?        S    oct27   0:00  \_ tlsmgr -l -t unix -u -c
postfix  23635  0.0  0.0  38220  1132 ?        S    11:04   0:00  \_ anvil -l -t unix -u -c
postfix  23777  0.0  0.0  38220  1148 ?        S    11:06   0:00  \_ pickup -l -t fifo -u -c
postfix  23982  0.0  0.0  38232  2344 ?        S    11:07   0:00  \_ trivial-rewrite -n rewrite -t unix -u -c
postfix  23984  0.0  0.0  42548  2672 ?        S    11:07   0:00  \_ smtp -t unix -u -c
postfix  23985  0.0  0.0  42548  2672 ?        S    11:07   0:00  \_ smtp -t unix -u -c
postfix  23988  0.0  0.0  38256  2356 ?        S    11:07   0:00  \_ bounce -z -n defer -t unix -u -c
root      9452  0.0  0.1  17772  5500 ?        S<L  00:00   0:01 /usr/bin/atop -a -w /var/log/atop/atop_20171029 600
root     17826  0.0  0.0  52704  1188 ?        Ss   08:41   0:00 /usr/sbin/sshd
root     23980  0.1  0.0  71956  3684 ?        Ss   11:07   0:00  \_ sshd: root@pts/0 
root     23990  0.3  0.0  24332  3456 pts/0    Ss   11:07   0:00      \_ -bash
root     24085  0.0  0.0  14444  1452 pts/0    S+   11:07   0:00          \_ /bin/bash /var/scripts/diagnosis_instantanea.sh
root     24094  0.0  0.0  18408  1348 pts/0    R+   11:07   0:00              \_ ps auxwwwf

提前致谢。

答案1

答案的第一部分很简单:您的负载为 39,因为有

Tasks: 148 total,  43 running,

运行队列中有 43 个进程。

当然,这引出了下一个问题:运行如此多的进程是因为请求太多(检查日志)还是因为请求的处理被延迟。

没有 I/O 可以负责。如果mysqldmemcached是瓶颈,那么我们会将它们列为 CPU 消耗最高的进程。

也许您的应用程序(在 Apache 中运行)会导致网络请求,从而导致延迟。看一下

netstat --inet --inet6 -nap | sort -k 6

为了检查是否存在具有多个连接的进程。

或者,更简单(但信息较少):

netstat --inet --inet6 -nap | sort -k 6 | awk '{ print $7 }' | uniq -cd

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