我有 2 个 Intel Xeon E5520 四核
top - 18:21:49 up 2 days, 16:33, 4 users, load average: 2.09, 2.26, 2.36
Tasks: 313 total, 2 running, 309 sleeping, 0 stopped, 2 zombie
Cpu(s): 12.7%us, 1.3%sy, 0.0%ni, 85.8%id, 0.1%wa, 0.0%hi, 0.1%si, 0.0%st
Mem: 16427200k total, 16213896k used, 213304k free, 3129632k buffers
Swap: 2104496k total, 268k used, 2104228k free, 6019324k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
7733 apache 25 0 388m 66m 5172 R 100.0 0.4 1:28.74 httpd
28314 apache 15 0 389m 68m 5868 S 36.9 0.4 3:16.10 httpd
23429 apache 15 0 357m 36m 4016 S 7.0 0.2 0:04.93 httpd
19562 apache 15 0 358m 36m 5176 S 2.3 0.2 1:39.78 httpd
22219 apache 17 0 360m 39m 5824 S 2.3 0.2 1:51.41 httpd
22233 apache 15 0 360m 38m 5152 S 2.3 0.2 2:31.10 httpd
32578 apache 15 0 357m 35m 5192 S 2.3 0.2 1:44.53 httpd
911 apache 15 0 358m 36m 5192 S 2.0 0.2 1:35.01 httpd
19565 apache 15 0 359m 37m 5192 S 2.0 0.2 1:35.85 httpd
21643 apache 18 0 355m 34m 4016 S 2.0 0.2 0:12.32 httpd
27753 apache 17 0 358m 37m 5824 S 2.0 0.2 1:17.59 httpd
18335 apache 16 0 357m 35m 5128 S 1.7 0.2 0:21.50 httpd
3698 apache 18 0 358m 36m 5200 S 1.3 0.2 2:38.00 httpd
22236 apache 15 0 370m 48m 5196 S 1.3 0.3 1:46.29 httpd
10148 apache 15 0 357m 35m 5148 S 1.0 0.2 0:42.47 httpd
10164 apache 16 0 357m 35m 5188 S 1.0 0.2 0:45.26 httpd
19560 apache 15 0 358m 37m 5828 S 1.0 0.2 1:41.71 httpd
19564 apache 15 0 357m 36m 5184 S 1.0 0.2 1:52.38 httpd
14119 apache 15 0 370m 48m 5192 S 0.7 0.3 2:27.13 httpd
25016 apache 18 0 386m 62m 5096 S 0.7 0.4 0:01.31 httpd
26375 root 15 0 12900 1340 848 R 0.7 0.0 0:08.10 top
现在我刚刚切换到 ubuntu，我在 top 中也遇到了同样的事情
top - 18:06:58 up 1 day, 1:23, 8 users, load average: 2.68, 2.97, 3.01
Tasks: 452 total, 5 running, 447 sleeping, 0 stopped, 0 zombie
Cpu(s): 14.3%us, 1.0%sy, 0.0%ni, 84.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 12322908k total, 7752752k used, 4570156k free, 4906912k buffers
Swap: 1998840k total, 1516k used, 1997324k free, 1203772k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
9112 www-data 20 0 341m 88m 3948 R 100 0.7 0:17.50 apache2
424 www-data 20 0 347m 91m 5496 R 100 0.8 1:13.21 apache2
9549 www-data 20 0 338m 85m 4052 R 41 0.7 0:03.37 apache2
5894 www-data 20 0 295m 40m 5376 S 25 0.3 0:19.08 apache2
9742 www-data 20 0 265m 13m 4028 S 25 0.1 0:00.78 apache2
9004 www-data 20 0 266m 13m 4052 S 24 0.1 0:06.91 apache2
6344 www-data 20 0 343m 90m 4252 R 18 0.8 0:20.49 apache2
4722 www-data 20 0 295m 40m 5444 S 10 0.3 0:27.82 apache2
26081 www-data 20 0 307m 52m 5452 S 10 0.4 1:40.82 apache2
6495 www-data 20 0 306m 51m 5396 S 2 0.4 0:20.03 apache2
28300 www-data 20 0 316m 63m 4364 S 2 0.5 2:35.44 apache2
9411 www-data 20 0 304m 52m 4256 S 2 0.4 0:02.24 apache2
1541 root 20 0 3455m 105m 9396 S 1 0.9 11:26.06 java
8142 www-data 20 0 306m 51m 5368 S 1 0.4 0:09.83 apache2
7160 root 20 0 19616 1832 1064 R 1 0.0 0:56.69 top
375 root 20 0 0 0 0 S 0 0.0 0:05.83 kondemand/12
1 root 20 0 23696 1908 1272 S 0 0.0 0:19.71 init
2 root 20 0 0 0 0 S 0 0.0 0:00.01 kthreadd
3 root RT 0 0 0 0 S 0 0.0 0:00.01 migration/0
4 root 20 0 0 0 0 S 0 0.0 0:00.61 ksoftirqd/0
5 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/0
6 root RT 0 0 0 0 S 0 0.0 0:00.01 migration/1
7 root 20 0 0 0 0 S 0 0.0 0:00.70 ksoftirqd/1
8 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/1
9 root RT 0 0 0 0 S 0 0.0 0:00.01 migration/2
10 root 20 0 0 0 0 S 0 0.0 0:00.10 ksoftirqd/2
11 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/2
12 root RT 0 0 0 0 S 0 0.0 0:00.01 migration/3
13 root 20 0 0 0 0 S 0 0.0 0:00.03 ksoftirqd/3
14 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/3
15 root RT 0 0 0 0 S 0 0.0 0:00.01 migration/4
16 root 20 0 0 0 0 S 0 0.0 0:00.12 ksoftirqd/4
17 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/4
18 root RT 0 0 0 0 S 0 0.0 0:00.01 migration/5
19 root 20 0 0 0 0 S 0 0.0 0:00.01 ksoftirqd/5
20 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/5
21 root RT 0 0 0 0 S 0 0.0 0:00.01 migration/6
22 root 20 0 0 0 0 S 0 0.0 0:00.93 ksoftirqd/6
23 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/6
24 root RT 0 0 0 0 S 0 0.0 0:00.01 migration/7
25 root 20 0 0 0 0 S 0 0.0 0:00.16 ksoftirqd/7
26 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/7
27 root RT 0 0 0 0 S 0 0.0 0:00.01 migration/8
28 root 20 0 0 0 0 S 0 0.0 0:00.04 ksoftirqd/8
29 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/8
30 root RT 0 0 0 0 S 0 0.0 0:00.01 migration/9
31 root 20 0 0 0 0 S 0 0.0 0:00.01 ksoftirqd/9
32 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/9
33 root RT 0 0 0 0 S 0 0.0 0:00.01 migration/10
34 root 20 0 0 0 0 S 0 0.0 0:00.01 ksoftirqd/10
35 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/10
36 root RT 0 0 0 0 S 0 0.0 0:00.01 migration/11
37 root 20 0 0 0 0 S 0 0.0 0:00.02 ksoftirqd/11
38 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/11
39 root RT 0 0 0 0 S 0 0.0 0:00.06 migration/12
40 root 20 0 0 0 0 S 0 0.0 0:00.11 ksoftirqd/12
41 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/12
42 root RT 0 0 0 0 S 0 0.0 0:01.13 migration/13
43 root 20 0 0 0 0 S 0 0.0 0:00.43 ksoftirqd/13
44 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/13
45 root RT 0 0 0 0 S 0 0.0 0:00.75 migration/14
46 root 20 0 0 0 0 S 0 0.0 0:00.54 ksoftirqd/14
答案1
可能是您的某个 PHP 脚本非常繁忙。
答案2
这种情况持续了多久？这是第一次发生吗？我看到了工作线程的挂机时间，但您没有给我们任何其他信息。
如果事情一直变得很棘手，您可以做很多事情来排除故障，例如使用 mod_logio 进行黑盒日志记录、使用 XDebug 进行 PHP 分析等。
如果没有更多细节，很难推测。