我有一个lfd电子邮件警报 – 我已经安装CSF – 今天透露，我的服务器（Centos 6.6）已经使用了大量的服务器资源5分钟。 我检查了我的VPS图表，发现我的服务器已经读了大约3.7GB，写了大约2.8GB。 关键是我最近才把我的网站公开，所以显然我没有很多的访问者。 我无法理解大量I / O的原因。
该电子邮件包含一个名为vmstat.txt的文件，我已经贴上了进一步的信息。
Output from vmstat: procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu----- rb swpd free buff cache si so bi bo in cs us sy id wa st 0 7 1159256 50100 676 24568 10 15 166 34 72 87 1 1 96 2 0 如果我的服务器受到污染，我必须担心吗？ 请让我知道我可以检查我的服务器已经读取或写入。 我的意思是，有没有办法可以看到过去曾经有过最好的IO的进程？
更新：出现问题时的服务器参数如下：
One Minute - 40.34 Five Minutes - 14.67 Fifteen Minutes - 5.35 top - 06:51:08 up 2 days, 18:51, 0 users, load average: 48.59, 19.98, 7.53 Tasks: 195 total, 38 running, 157 sleeping, 0 stopped, 0 zombie Cpu(s): 1.2%us, 0.6%sy, 0.0%ni, 96.0%id, 2.0%wa, 0.0%hi, 0.0%si, 0.2%st Mem: 1020344k total, 969216k used, 51128k free, 1476k buffers Swap: 2588668k total, 1455544k used, 1133124k free, 21416k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 29116 admin 20 0 256m 45m 2852 R 15.7 4.5 0:00.59 /usr/sbin/httpd -k start -DSSL 29143 admin 20 0 225m 21m 2764 D 10.1 2.2 0:00.31 /usr/sbin/httpd -k start -DSSL 29145 admin 20 0 225m 21m 2764 D 10.1 2.2 0:00.32 /usr/sbin/httpd -k start -DSSL 29117 admin 20 0 256m 38m 2848 D 9.0 3.9 0:00.64 /usr/sbin/httpd -k start -DSSL 29106 admin 20 0 262m 38m 2824 R 6.7 3.9 0:00.69 /usr/sbin/httpd -k start -DSSL 29126 root 20 0 157m 11m 596 R 6.7 1.2 0:00.13 lfd - child closing 29146 admin 20 0 225m 21m 2780 R 6.7 2.2 0:00.33 /usr/sbin/httpd -k start -DSSL 29135 admin 20 0 256m 43m 2844 R 5.6 4.3 0:00.66 /usr/sbin/httpd -k start -DSSL 29139 admin 20 0 225m 21m 2768 R 5.6 2.1 0:00.32 /usr/sbin/httpd -k start -DSSL 29125 root 20 0 157m 11m 620 D 4.5 1.2 0:00.13 lfd - child closing 29137 admin 20 0 260m 32m 2832 R 4.5 3.3 0:00.63 /usr/sbin/httpd -k start -DSSL 29166 root 20 0 157m 12m 952 R 4.5 1.3 0:00.22 lfd - (child) closing 29107 admin 20 0 255m 32m 2820 R 3.4 3.3 0:00.67 /usr/sbin/httpd -k start -DSSL 29114 root 20 0 157m 11m 652 R 3.4 1.1 0:00.13 lfd - (child) closing 29122 admin 20 0 260m 34m 2832 R 3.4 3.5 0:00.65 /usr/sbin/httpd -k start -DSSL 29136 admin 20 0 253m 34m 2832 R 3.4 3.5 0:00.54 /usr/sbin/httpd -k start -DSSL 29144 admin 20 0 223m 19m 2744 R 3.4 2.0 0:00.30 /usr/sbin/httpd -k start -DSSL 29179 root 20 0 157m 12m 660 D 3.4 1.2 0:00.04 lfd - (child) closing 16 root 20 0 0 0 0 R 2.2 0.0 0:35.81 [kblockd/0] 29083 admin 20 0 256m 17m 3064 D 2.2 1.8 0:00.86 /usr/sbin/httpd -k start -DSSL 29103 admin 20 0 241m 15m 3052 R 2.2 1.6 0:00.73 /usr/sbin/httpd -k start -DSSL 29115 admin 20 0 256m 30m 2848 R 2.2 3.1 0:00.70 /usr/sbin/httpd -k start -DSSL 29141 admin 20 0 257m 32m 2832 R 2.2 3.3 0:00.66 /usr/sbin/httpd -k start -DSSL
和
One Minute - 51.66 Five Minutes - 23.46 Fifteen Minutes - 9.08 top - 06:52:06 up 2 days, 18:52, 0 users, load average: 56.51, 27.29, 10.81 Tasks: 210 total, 1 running, 209 sleeping, 0 stopped, 0 zombie Cpu(s): 1.2%us, 0.6%sy, 0.0%ni, 96.0%id, 2.0%wa, 0.0%hi, 0.0%si, 0.2%st Mem: 1020344k total, 971276k used, 49068k free, 1480k buffers Swap: 2588668k total, 1624388k used, 964280k free, 23268k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 29238 root 20 0 15024 1236 848 R 3.9 0.1 0:00.02 /usr/bin/top -c -b -n 1 1308 mysql 20 0 859m 40m 3204 S 1.9 4.1 3:02.97 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --log-error=/var/lib/mysql/mail.mywebsite.com.err --pid-file=/var/lib/mysql/mail.mywebsite.com.pid 29082 admin 20 0 256m 9420 2836 D 1.9 0.9 0:00.89 /usr/sbin/httpd -k start -DSSL 29086 admin 20 0 256m 7908 2836 D 1.9 0.8 0:00.89 /usr/sbin/httpd -k start -DSSL 29126 root 20 0 157m 15m 864 D 1.9 1.6 0:00.21 lfd - child closing 29166 root 20 0 157m 15m 952 D 1.9 1.6 0:00.29 lfd - (child) closing 29226 root 20 0 157m 4640 916 D 1.9 0.5 0:00.06 lfd - checking directories 1 root 20 0 19232 664 660 S 0.0 0.1 0:00.49 /sbin/init 2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 [kthreadd]
和
One Minute - 51.66 Five Minutes - 23.46 Fifteen Minutes - 9.08 top - 06:52:10 up 2 days, 18:52, 0 users, load average: 56.51, 27.29, 10.81 Tasks: 209 total, 1 running, 208 sleeping, 0 stopped, 0 zombie Cpu(s): 1.2%us, 0.6%sy, 0.0%ni, 96.0%id, 2.0%wa, 0.0%hi, 0.0%si, 0.2%st Mem: 1020344k total, 964184k used, 56160k free, 1204k buffers Swap: 2588668k total, 1646580k used, 942088k free, 20432k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 29183 diradmin 20 0 55252 2520 1776 D 1.9 0.2 0:00.08 /usr/local/directadmin/dataskq 29237 root 20 0 15024 1236 848 R 1.9 0.1 0:00.01 /usr/bin/top -c -b -n 1 1 root 20 0 19232 664 660 S 0.0 0.1 0:00.49 /sbin/init
谢谢