负载高。
这是我的上衣
top - 04:08:52 up 15 days, 15:14, 1 user, load average: 99.09, 107.09, 117.35
Tasks: 998 total, 125 running, 827 sleeping, 1 stopped, 45 zombie
Cpu(s): 13.4%us, 75.1%sy, 0.0%ni, 11.3%id, 0.0%wa, 0.0%hi, 0.2%si, 0.0%st
Mem: 65951648k total, 65390852k used, 560796k free, 5023756k buffers
Swap: 4194300k total, 262684k used, 3931616k free, 39846488k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
14904 nobody 20 0 151m 50m 2508 R 15.4 0.1 11:12.89 httpd
1769 root 20 0 0 0 0 R 15.1 0.0 355:06.40 kondemand/22
1778 root 20 0 0 0 0 S 14.8 0.0 345:52.47 kondemand/31
1767 root 20 0 0 0 0 S 14.4 0.0 353:41.57 kondemand/20
1766 root 20 0 0 0 0 S 13.8 0.0 374:52.13 kondemand/19
15188 newgames 20 0 0 0 0 Z 13.8 0.0 0:00.42 php <defunct>
1772 root 20 0 0 0 0 R 13.4 0.0 337:16.18 kondemand/25
1775 root 20 0 0 0 0 S 13.4 0.0 352:11.24 kondemand/28
11857 mailnull 20 0 71640 1408 752 S 12.8 0.0 0:39.47 exim
15180 hearsttr 20 0 179m 10m 6020 R 12.8 0.0 0:00.39 php
20980 nobody 20 0 151m 50m 2084 R 12.8 0.1 12:14.03 httpd
1755 root 20 0 0 0 0 S 12.5 0.0 364:43.87 kondemand/8
1764 root 20 0 0 0 0 R 12.5 0.0 342:25.04 kondemand/17
15161 hearsttr 20 0 0 0 0 Z 12.5 0.0 0:00.38 php <defunct>
1756 root 20 0 0 0 0 R 12.1 0.0 352:29.80 kondemand/9
1771 root 20 0 0 0 0 R 12.1 0.0 349:01.36 kondemand/24
15138 hearsttr 20 0 0 0 0 Z 12.1 0.0 0:00.37 php <defunct>
1757 root 20 0 0 0 0 S 11.8 0.0 368:19.92 kondemand/10
1773 root 20 0 0 0 0 S 11.8 0.0 355:11.04 kondemand/26
15174 newgames 20 0 0 0 0 Z 11.8 0.0 0:00.36 php <defunct>
15440 nobody 20 0 151m 50m 2080 R 11.8 0.1 10:13.40 httpd
1760 root 20 0 0 0 0 R 11.5 0.0 368:08.78 kondemand/13
1765 root 20 0 0 0 0 S 11.5 0.0 358:25.81 kondemand/18
15817 nobody 20 0 151m 50m 2112 R 11.5 0.1 12:15.94 httpd
15194 hearsttr 20 0 187m 12m 5820 S 11.1 0.0 0:00.34 php
15217 hearsttr 20 0 0 0 0 Z 10.8 0.0 0:00.33 php <defunct>
15226 newgames 20 0 0 0 0 Z 10.8 0.0 0:00.33 php <defunct>
1219 nobody 20 0 151m 50m 2084 R 10.5 0.1 2:26.14 httpd
1758 root 20 0 0 0 0 S 10.5 0.0 375:39.42 kondemand/11
1759 root 20 0 0 0 0 R 10.5 0.0 364:42.21 kondemand/12
1763 root 20 0 0 0 0 S 10.5 0.0 355:34.66 kondemand/16
1770 root 20 0 0 0 0 S 10.5 0.0 350:08.17 kondemand/23
6111 nobody 20 0 151m 50m 2508 R 10.5 0.1 9:23.07 httpd
14425 nobody 20 0 151m 50m 2208 S 10.5 0.1 11:37.53 httpd
15085 nobody 20 0 151m 50m 2508 R 10.5 0.1 11:11.37 httpd
15228 sexsmovi 20 0 188m 12m 5820 S 10.5 0.0 0:00.32 php
15378 nobody 20 0 151m 50m 2508 S 10.5 0.1 11:46.37 httpd
15522 nobody 20 0 151m 50m 2196 S 10.5 0.1 10:54.56 httpd
16446 nobody 20 0 151m 50m 2988 S 10.5 0.1 11:12.03 httpd
16962 nobody 20 0 151m 50m 2196 S 10.5 0.1 11:05.68 httpd
18266 nobody 20 0 151m 50m 2084 S 10.5 0.1 11:41.40 httpd
18334 nobody 20 0 151m 50m 2468 S 10.5 0.1 10:39.56 httpd
18774 nobody 20 0 151m 50m 2092 S 10.5 0.1 11:00.09 httpd
817 nobody 20 0 151m 51m 2992 S 10.2 0.1 10:09.30 httpd
1882 nobody 20 0 151m 50m 2844 S 10.2 0.1 11:40.74 httpd
14523 nobody 20 0 151m 50m 3000 S 10.2 0.1 11:30.28 httpd
14900 nobody 20 0 151m 50m 2080 S 10.2 0.1 10:38.68 httpd
14919 nobody 20 0 151m 50m 2540 S 10.2 0.1 11:33.35 httpd
15178 nobody 20 0 151m 50m 2508 S 10.2 0.1 11:35.48 httpd
15223 romanced 20 0 0 0 0 Z 10.2 0.0 0:00.31 php <defunct>
15251 nudeteen 20 0 184m 9.9m 5204 R 10.2 0.0 0:00.31 php
15259 investgr 20 0 184m 9884 5164 R 10.2 0.0 0:00.31 php
15460 nobody 20 0 151m 50m 2076 S 10.2 0.1 12:09.73 httpd
15944 nobody 20 0 151m 50m 2092 R 10.2 0.1 11:27.52 httpd
16168 nobody 20 0 151m 50m 2508 S 10.2 0.1 11:40.34 httpd
16736 nobody 20 0 151m 50m 2968 R 10.2 0.1 11:42.38 httpd
17367 nobody 20 0 151m 50m 2228 S 10.2 0.1 10:32.59 httpd
17438 nobody 20 0 151m 50m 2540 S 10.2 0.1 10:54.28 httpd
17882 nobody 20 0 151m 50m 2980 S 10.2 0.1 11:12.86 httpd
请注意，75% 的 CPU 被系统而不是用户使用。我想知道他们是做什么的？
root@host [~]# iostat -xk 5
Linux 2.6.32-504.el6.x86_64 (host.buildingsuperteams.com) 01/14/2015 _x86_64_ (32 CPU)
avg-cpu: %user %nice %system %iowait %steal %idle
6.75 0.03 13.14 0.02 0.00 80.06
Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util
sda 0.27 132.84 1.38 37.44 17.17 1371.08 71.52 0.42 10.77 0.69 2.67
sdb 0.05 38.16 0.51 29.32 12.26 273.27 19.14 0.19 6.32 0.32 0.94
iostat 没有显示 SSD 的任何过度使用
运行 iftop 似乎并没有表明网络是瓶颈。
系统上正在运行某些东西，但是什么？
在我的其他服务器上有人建议
由于 Apache 的配置方式，您的服务器负载很高，因为每个新的 php 访问都会打开一个新进程。
我为这个虚拟主机启用了 Apache keepalive，这似乎降低了负载。
我想知道在哪里可以了解更多相关信息。
这是 16 核 cpu 的一些信息
root@host [~]# grep -E '^model name|^cpu MHz' /proc/cpuinfo
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 1400.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000
model name : AMD Opteron(TM) Processor 6272
cpu MHz : 2100.000