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最近发现nginx经常报404 not found错误,于是留意了一下load average,发现一个情况,经常95.7%wa,然后慢慢,负载就上来了,一旦load average在:1.5上面,nginx服务器就报404 not found...高手解答一下,谢谢.
现在下面的负载看起来不高,只要前台一一个人在浏鉴网站,后台的负载马上飘到2.0以上.
top - 21:30:01 up 1:37, 1 user, load average: 0.97, 0.47, 0.38
Tasks: 36 total, 2 running, 33 sleeping, 1 stopped, 0 zombie
Cpu(s): 2.7%us, 0.3%sy, 0.0%ni, 1.3%id, 95.7%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 1048800k total, 727312k used, 321488k free, 0k buffers
Swap: 0k total, 0k used, 0k free, 0k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
11819 nginx 16 0 36496 21m 3804 S 2.0 2.1 0:22.24 php-cgi
11814 nginx 16 0 38720 23m 4512 D 1.3 2.3 0:20.17 php-cgi
1 root 18 0 2068 648 556 S 0.0 0.1 0:00.14 init
10014 root 15 -4 2152 548 344 S 0.0 0.1 0:00.00 udevd
11473 root 15 0 1724 560 476 S 0.0 0.1 0:00.02 syslogd
11490 root 18 0 7064 1072 668 S 0.0 0.1 0:00.00 sshd
11503 root 18 0 2724 864 696 S 0.0 0.1 0:00.00 xinetd
11517 root 15 0 5184 516 248 S 0.0 0.0 0:00.00 vsftpd
11551 root 25 0 3616 1288 1116 S 0.0 0.1 0:00.01 mysqld_safe
11602 mysql 15 0 408m 79m 5864 S 0.0 7.8 0:16.02 mysqld
11755 root 15 0 9176 1664 660 S 0.0 0.2 0:00.12 sendmail
11763 smmsp 15 0 8132 1496 624 S 0.0 0.1 0:00.00 sendmail
11778 root 25 0 7952 1268 312 S 0.0 0.1 0:00.00 nginx
11779 nginx 15 0 8488 2432 980 S 0.0 0.2 0:00.44 nginx
11787 nginx 15 0 8460 2428 980 S 0.0 0.2 0:00.54 nginx
11792 nginx 25 0 21100 6476 4568 S 0.0 0.6 0:00.03 php-cgi
11802 root 18 0 4404 1104 564 S 0.0 0.1 0:00.00 crond
11812 root 18 0 5580 700 428 S 0.0 0.1 0:00.00 sasl
[ 本帖最后由 leozhang 于 2010-12-19 19:18 编辑 ] |
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