Jos*_*osh 5 php intermittent apache-2.2
我有一个非常奇怪的间歇性问题。它发生在运行 CentOS 和 Apache/2.2.8 的共享托管服务器上，以 10 - 30 个请求/秒的速率为主要基于 PHP 的网站提供服务。3.5 GB RAM，内核 2.6.9-67.0.7ELsmp 以防万一。
发生的情况是，大约每周一次（但似乎是随机的，没有相关性）apache 将“阻塞”处理仅对一个域的请求，并且通常大多数重新测试都针对相同的 URL。我知道问题发生是因为负载穿过屋顶。（负载达到 50 或 100，如果我不停止它负载达到 200！）我发现的唯一解决方法是：killall -9 httpd; /etc/init.d/httpd restart.
如果我在发生这种情况时检查 /server-status，输出类似于以下内容。请注意，它并不总是发生在这个站点上，但大约 75% 的时间是这个站点的罪魁祸首：编辑：这现在发生在一个完全不同的服务器上，所以它不是特定于给定的脚本。
更新：我们已将此服务器上的所有站点移至全新硬件上的全新虚拟机。更快的磁盘，更多的 RAM。问题依然存在，实际上更糟！有任何想法吗？我很乐意为正确答案提供巨额奖金，但我实际上不愿意提供一个，因为这个问题已经多年没有正确答案了。
Apache Server Status for localhost
Server Version: Apache/2.2.8 (Unix) mod_ssl/2.2.8 OpenSSL/0.9.7a DAV/2 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 PHP/5.2.6 mod_perl/2.0.4 Perl/v5.8.8
Server Built: Jun 7 2008 09:35:37
Current Time: Friday, 17-Jul-2009 10:15:40 EDT
Restart Time: Friday, 03-Jul-2009 12:36:59 EDT
Parent Server Generation: 3
Server uptime: 13 days 21 hours 38 minutes 40 seconds
Total accesses: 10343186 - Total Traffic: 111.6 GB
CPU Usage: u1710.63 s2129.19 cu.41 cs0 - .32% CPU load
8.61 requests/sec - 97.4 kB/second - 11.3 kB/request
250 requests currently being processed, 0 idle workers
WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW
WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW
WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW
WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWKWWWWWWWWWWWWWWWWWW......
Scoreboard Key:
"_" Waiting for Connection, "S" Starting up, "R" Reading Request,
"W" Sending Reply, "K" Keepalive (read), "D" DNS Lookup,
"C" Closing connection, "L" Logging, "G" Gracefully finishing,
"I" Idle cleanup of worker, "." Open slot with no current process
Srv PID Acc M CPU SS Req Conn Child Slot Client VHost Request
0-3 3282 0/52/316180 W 1.47 41802 0 0.0 0.54 3849.21 209.249.53.104 zachdotsey.com GET /wordpress/2007/08/18/the-body-exhibition/ HTTP/1.0
1-3 30061 0/191/313974 W 34.46 44051 0 0.0 2.62 3400.19 65.184.161.115 zachdotsey.com POST /wordpress/wp-admin/admin-ajax.php HTTP/1.1
2-3 2720 1/23/307812 W 0.13 42298 0 0.5 0.01 3479.29 68.118.8.157 zachdotsey.com GET /wordpress/ HTTP/1.1
3-3 1733 0/382/306392 W 3.59 41744 0 0.0 3.67 3383.63 75.101.200.204 zachdotsey.com GET /wordpress/2007/08/18/the-body-exhibition/ HTTP/1.0
4-3 3141 0/132/305071 W 3.52 41776 0 0.0 2.20 3335.79 209.249.53.236 zachdotsey.com GET /wordpress/2007/08/18/the-body-exhibition/ HTTP/1.0
5-3 31819 0/73/300070 W 0.79 43932 0 0.0 2.05 3349.65 65.184.161.115 zachdotsey.com POST /wordpress/wp-admin/admin-ajax.php HTTP/1.1
6-3 6799 0/13/294060 W 0.16 40354 0 0.0 0.25 3261.88 76.23.230.184 zachdotsey.com GET /wordpress/?p=111 HTTP/1.1
7-3 4334 0/92/289873 W 0.42 40277 0 0.0 0.36 3211.94 72.233.56.144 zachdotsey.com GET /wordpress/feed/ HTTP/1.1
8-3 18326 0/11/294687 W 0.14 32476 0 0.0 0.06 3217.41 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
9-3 2451 0/56/291730 W 0.23 42381 0 0.0 0.32 3113.19 68.118.8.157 zachdotsey.com GET /wordpress/index.php HTTP/1.1
10-3 31211 0/59/280899 W 6.04 44051 0 0.0 0.77 3128.00 72.52.238.128 zachdotsey.com POST /wordpress/wp-cron.php?doing_wp_cron HTTP/1.0
11-3 3823 0/4/277229 W 0.17 41746 0 0.0 0.04 3014.66 68.118.8.157 zachdotsey.com GET /wordpress/index.php HTTP/1.1
12-3 4473 0/9/277074 W 0.08 38453 0 0.0 0.00 3313.94 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
13-3 4242 1/14/272166 W 0.10 41659 0 0.5 0.05 2977.05 68.118.8.157 zachdotsey.com GET /wordpress/ HTTP/1.1
14-3 2323 0/234/269513 W 0.84 42136 0 0.0 1.02 2946.48 65.184.161.115 zachdotsey.com POST /wordpress/wp-admin/admin-ajax.php HTTP/1.1
15-3 32051 0/6/257740 W 0.08 43872 0 0.0 0.58 2866.34 65.184.161.115 zachdotsey.com POST /wordpress/wp-admin/admin-ajax.php HTTP/1.1
16-3 16986 0/271/259463 W 18.13 16761 0 0.0 4.12 2896.05 74.6.18.233 zachdotsey.com GET /wordpress/tag/xbox/ HTTP/1.0
17-3 2297 1/8/252501 W 0.54 42502 0 0.5 0.18 2797.73 68.118.8.157 zachdotsey.com GET /wordpress/ HTTP/1.1
18-3 9476 1/145/247116 W 0.61 40095 0 0.4 1.53 2703.11 64.237.119.18 zachdotsey.com GET /wordpress/ HTTP/1.1
19-3 2494 0/214/244830 W 3.16 42017 0 0.0 2.40 2618.41 65.184.161.115 zachdotsey.com POST /wordpress/wp-admin/admin-ajax.php HTTP/1.1
20-3 5526 0/118/238426 W 3.50 37656 0 0.0 1.73 2544.06 68.10.212.178 zachdotsey.com GET /wordpress/2009/07/15/andre-dawkins-to-duke-a-year-early/ H
21-3 31901 0/28/228757 W 0.14 43992 0 0.0 0.04 2522.36 65.184.161.115 zachdotsey.com POST /wordpress/wp-admin/admin-ajax.php HTTP/1.1
22-3 12398 0/25/216141 W 0.40 39998 0 0.0 4.72 2398.82 38.117.108.131 zachdotsey.com GET /wordpress/ HTTP/1.1
23-3 2300 0/187/222141 W 0.68 42315 0 0.0 0.67 2503.15 65.184.161.115 zachdotsey.com GET /wordpress/ HTTP/1.1
24-3 31969 0/25/211848 W 0.26 43810 0 0.0 0.38 2326.01 65.184.161.115 zachdotsey.com POST /wordpress/wp-admin/admin-ajax.php HTTP/1.1
25-3 31582 0/25/198495 W 0.17 69010 0 0.0 0.25 2139.13 70.63.195.121 myvenue.venuecom.com POST /fastmail/ HTTP/1.1
26-3 28115 1/1/197089 W 0.04 40155 0 0.4 0.00 2126.75 64.237.119.18 zachdotsey.com GET /wordpress/ HTTP/1.1
27-3 12988 1/42/186898 W 0.55 35055 0 2.1 0.36 2037.54 71.193.156.250 zachdotsey.com GET /wordpress/ HTTP/1.1
28-3 3780 1/26/181659 W 0.34 41662 0 0.5 0.05 1918.00 68.118.8.157 zachdotsey.com GET /wordpress/ HTTP/1.1
29-3 1002 0/22/169331 W 0.18 39885 0 0.0 0.03 1888.59 64.40.121.190 zachdotsey.com GET /robots.txt HTTP/1.0
30-3 4493 0/6/163101 W 0.06 41465 0 0.0 0.18 1732.58 209.131.41.49 zachdotsey.com GET /wordpress/feed/ HTTP/1.0
31-3 32458 0/1/162852 W 0.04 43750 0 0.0 0.01 1758.80 65.184.161.115 zachdotsey.com POST /wordpress/wp-admin/admin-ajax.php HTTP/1.1
32-3 14198 0/571/157504 W 47.36 32680 0 0.0 8.64 1733.04 74.6.18.233 zachdotsey.com GET /wordpress/2008/12/ HTTP/1.0
33-3 2213 0/9/152830 W 0.32 42624 0 0.0 0.00 1782.36 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
34-3 2308 0/1/137395 W 0.06 39398 0 0.0 0.00 1433.25 64.40.121.190 zachdotsey.com GET /wordpress/ HTTP/1.0
35-3 6984 0/123/127498 W 1.88 40241 0 0.0 0.18 1350.38 206.196.125.113 zachdotsey.com GET /wordpress/?feed=rss2 HTTP/1.1
36-3 1003 0/21/116316 W 0.81 39874 0 0.0 1.15 1216.35 67.202.60.246 zachdotsey.com GET /wordpress/ HTTP/1.1
37-3 3025 0/19/106816 W 0.16 42196 0 0.0 0.28 1096.76 65.184.161.115 zachdotsey.com POST /wordpress/wp-admin/admin-ajax.php HTTP/1.1
38-3 4250 1/15/101047 W 0.09 41660 0 0.5 0.01 1198.01 68.118.8.157 zachdotsey.com GET /wordpress/ HTTP/1.1
39-3 3073 0/73/91871 W 2.32 41891 0 0.0 1.81 924.03 68.118.8.157 zachdotsey.com GET /wordpress/index.php HTTP/1.1
40-3 2133 0/15/86368 W 0.20 39445 0 0.0 0.09 888.41 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
41-3 2803 0/93/79858 W 0.67 39020 0 0.0 0.69 877.38 64.40.121.190 zachdotsey.com GET /wordpress/ HTTP/1.0
42-3 3030 0/165/72532 W 35.08 41532 0 0.0 2.17 777.91 65.184.161.115 zachdotsey.com GET /wordpress/?feed=rss2 HTTP/1.1
43-3 13566 0/427/68292 W 14.81 33263 0 0.0 6.28 682.48 174.129.193.94 zachdotsey.com GET /wordpress/feed/ HTTP/1.1
44-3 31951 0/6/65523 W 0.39 43980 0 0.0 0.15 624.37 78.31.110.126 zachdotsey.com GET /wordpress/feed HTTP/1.1
45-3 17775 0/4/64507 W 0.11 32768 0 0.0 0.00 666.08 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
46-3 17485 0/280/61533 W 30.17 16250 0 0.0 6.34 655.87 77.88.42.26 zachdotsey.com GET /robots.txt HTTP/1.1
47-3 1379 0/305/51058 W 2.50 42256 0 0.0 5.02 691.25 65.184.161.115 zachdotsey.com POST /wordpress/wp-admin/admin-ajax.php HTTP/1.1
48-3 15264 0/28/49621 W 0.11 33958 0 0.0 0.02 527.41 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
49-3 20544 1/28/48765 W 1.55 40125 0 0.4 0.17 516.42 64.237.119.18 zachdotsey.com GET /wordpress/ HTTP/1.1
50-3 14318 0/408/50772 W 26.77 32722 0 0.0 7.28 509.18 74.6.18.233 zachdotsey.com GET /wordpress/2008/12/ HTTP/1.0
51-3 2258 0/18/45699 W 0.08 39388 0 0.0 0.01 456.81 64.40.121.190 zachdotsey.com GET /robots.txt HTTP/1.0
52-3 3039 0/21/37675 W 0.38 42077 0 0.0 1.58 442.82 65.184.161.115 zachdotsey.com POST /wordpress/wp-admin/admin-ajax.php HTTP/1.1
53-3 2747 0/3/35053 W 0.06 39268 0 0.0 0.22 371.79 64.40.121.190 zachdotsey.com GET /wordpress/ HTTP/1.0
54-3 17408 0/22/35784 W 0.26 32871 0 0.0 0.42 367.04 74.6.18.233 zachdotsey.com GET /robots.txt HTTP/1.0
55-3 4511 0/6/29200 W 0.40 41444 0 0.0 0.23 375.89 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
56-3 5534 0/54/27466 W 2.63 37695 0 0.0 0.38 305.27 68.10.212.178 zachdotsey.com GET /wordpress/2009/07/15/andre-dawkins-to-duke-a-year-early/ H
57-3 23760 0/41/20806 W 0.23 40553 0 0.0 0.33 219.16 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
58-3 5638 0/247/17586 W 2.79 40174 0 0.0 2.66 182.34 64.237.119.18 zachdotsey.com GET /wordpress/feed/ HTTP/1.1
59-3 31783 0/5/18112 W 0.05 40067 0 0.0 0.06 182.11 65.113.57.7 zachdotsey.com GET /wordpress/feed/ HTTP/1.0
60-3 2319 0/1/13920 W 0.03 39391 0 0.0 0.00 145.61 38.117.108.131 zachdotsey.com GET /wordpress/ HTTP/1.1
61-3 23730 0/155/12935 W 29.86 28181 0 0.0 3.25 153.35 72.30.161.222 zachdotsey.com GET /wordpress/2008/10/26/tiring-surf-sessions/ HTTP/1.0
62-3 12586 0/25/12506 W 0.14 40271 0 0.0 0.09 135.23 72.233.56.156 zachdotsey.com GET /wordpress/ HTTP/1.1
63-3 13567 0/15/10439 W 0.54 34975 0 0.0 0.10 137.24 84.217.7.221 zachdotsey.com GET /wordpress/2009/06/06/emergency-baby-call-tests/ HTTP/1.1
64-3 17776 1/161/10534 W 1.65 31758 0 0.4 2.14 128.33 208.92.218.250 zachdotsey.com GET /wordpress/ HTTP/1.1
65-3 3053 0/159/7939 W 7.25 41485 0 0.0 2.64 74.76 209.131.41.48 zachdotsey.com GET /robots.txt HTTP/1.0
66-3 5056 0/115/6934 W 1.56 37848 0 0.0 2.43 81.76 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
67-3 16535 0/160/6199 W 19.57 39641 0 0.0 2.57 67.22 64.40.121.190 zachdotsey.com GET /wordpress/ HTTP/1.0
68-3 17777 0/37/7722 W 0.24 32569 0 0.0 0.15 93.77 74.6.18.233 zachdotsey.com GET /wordpress/2008/12/ HTTP/1.0
69-3 2355 0/2/5737 W 0.15 39346 0 0.0 0.03 73.54 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
70-3 10432 0/24/5080 W 0.33 36392 0 0.0 0.47 45.89 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
71-3 10433 0/12/4099 W 0.93 36365 0 0.0 0.65 41.80 68.7.141.144 zachdotsey.com GET /wordpress/2006/12/18/the-plastic-coating-on-the-end-of-a-s
72-3 6145 0/114/4835 W 12.61 37285 0 0.0 1.49 57.55 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
73-3 5539 0/71/4717 W 5.37 37680 0 0.0 1.63 62.39 68.10.212.178 zachdotsey.com GET /wordpress/2009/07/15/andre-dawkins-to-duke-a-year-early/ H
74-3 17690 0/38/5004 W 0.12 32810 0 0.0 0.25 46.34 74.6.18.233 zachdotsey.com GET /wordpress/2008/12/ HTTP/1.0
75-3 1528 0/38/3991 W 0.14 39764 0 0.0 0.08 41.91 64.40.121.190 zachdotsey.com GET /wordpress/ HTTP/1.0
76-3 2751 0/26/2886 W 0.22 39144 0 0.0 0.63 25.56 64.40.121.190 zachdotsey.com GET /wordpress/ HTTP/1.0
77-3 5453 0/95/6939 W 1.95 21796 0 0.0 1.09 87.49 69.147.79.37 zachdotsey.com GET /robots.txt HTTP/1.0
78-3 5061 0/192/3238 W 9.87 37110 0 0.0 2.13 39.70 78.31.110.126 zachdotsey.com GET /wordpress/feed HTTP/1.1
79-3 9955 0/143/4659 W 11.55 35985 0 0.0 7.35 64.53 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
80-3 17779 0/29/4181 W 0.33 32548 0 0.0 0.47 48.11 74.6.18.233 zachdotsey.com GET /wordpress/2008/12/ HTTP/1.0
81-3 1192 0/74/2861 W 0.54 39651 0 0.0 0.42 27.09 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
82-3 13108 0/42/4116 W 0.13 35144 0 0.0 0.10 37.39 71.193.156.250 zachdotsey.com GET /wordpress/wp-login.php?loggedout=true HTTP/1.1
83-3 32180 0/0/6535 W 0.98 10753 0 0.0 0.00 105.04 142.166.3.122 zachdotsey.com GET /robots.txt HTTP/1.1
84-3 24479 0/148/4080 W 98.02 28139 0 0.0 3.46 60.62 72.30.161.222 zachdotsey.com GET /wordpress/2008/10/26/tiring-surf-sessions/ HTTP/1.0
85-3 776 1/204/8349 W 40.83 9214 0 0.4 3.57 99.11 64.237.119.18 zachdotsey.com GET /wordpress/ HTTP/1.1
86-3 13569 0/25/3218 W 10.53 34863 0 0.0 0.29 28.96 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
87-3 13110 0/2/2535 W 0.09 35187 0 0.0 0.00 26.16 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
88-3 4716 0/157/2237 W 3.75 37444 0 0.0 3.58 25.28 206.196.125.113 zachdotsey.com GET /wordpress/?feed=rss2 HTTP/1.1
89-3 19878 0/110/2928 W 10.39 31357 0 0.0 0.54 26.66 58.61.164.39 zachdotsey.com GET /robots.txt HTTP/1.1
90-3 2003 0/28/1847 W 1.81 39519 0 0.0 0.39 19.10 64.40.121.190 zachdotsey.com GET /wordpress/ HTTP/1.0
91-3 13570 0/0/1928 W 10.59 35116 0 0.0 0.00 23.59 71.193.156.250 zachdotsey.com GET /wordpress/ HTTP/1.1
92-3 16358 0/282/1910 W 33.11 32280 0 0.0 5.57 26.53 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
93-3 16367 0/50/1664 W 10.03 33243 0 0.0 0.88 17.62 174.129.193.94 zachdotsey.com GET /wordpress/feed/ HTTP/1.1
94-3 25642 0/82/2391 W 19.24 28268 0 0.0 2.07 34.95 72.30.161.222 zachdotsey.com GET /wordpress/2008/10/26/tiring-surf-sessions/ HTTP/1.0
95-3 24480 0/261/2711 W 31.22 27528 0 0.0 3.14 43.29 75.219.249.154 zachdotsey.com GET /wordpress/tag/missy-warkentien/ HTTP/1.1
96-3 17692 0/514/1024 W 46.55 30965 0 0.0 6.50 14.37 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
97-3 10442 0/126/1041 W 1.25 35891 0 0.0 1.20 8.47 203.171.91.144 zachdotsey.com GET /wordpress/2009/07/15/andre-dawkins-to-duke-a-year-early/ H
98-3 25643 0/103/1705 W 0.67 28008 0 0.0 2.83 20.89 74.6.18.233 zachdotsey.com GET /wordpress/2008/10/26/tiring-surf-sessions/ HTTP/1.0
99-3 22619 0/338/1657 W 27.38 28329 0 0.0 4.00 27.55 72.30.161.222 zachdotsey.com GET /robots.txt HTTP/1.0
100-3 19714 0/0/1845 W 12.66 31778 0 0.0 0.00 22.14 208.92.218.250 zachdotsey.com GET /wordpress/feed/ HTTP/1.1
101-3 19367 1/155/1983 W 10.76 31728 0 0.4 0.15 23.66 208.92.218.250 zachdotsey.com GET /wordpress/ HTTP/1.1
102-3 26652 0/122/1187 W 41.42 26872 0 0.0 3.00 14.95 75.219.249.154 zachdotsey.com GET /wordpress/tag/missy-warkentien/ HTTP/1.1
103-3 7280 3/361/1639 W 12.44 35165 0 8.9 4.80 17.06 71.193.156.250 zachdotsey.com GET /wordpress/ HTTP/1.1
104-3 20843 0/507/949 W 99.96 28160 0 0.0 7.70 11.64 72.30.161.222 zachdotsey.com GET /wordpress/2008/10/26/tiring-surf-sessions/ HTTP/1.0
105-3 20844 0/308/1868 W 23.03 30024 0 0.0 3.00 28.11 78.31.110.126 zachdotsey.com GET /wordpress/feed HTTP/1.1
106-3 17791 1/278/1026 W 26.89 31698 0 0.4 4.18 13.29 208.92.218.250 zachdotsey.com GET /wordpress/ HTTP/1.1
107-3 17792 0/304/642 W 12.27 31388 0 0.0 2.72 8.79 58.61.164.39 zachdotsey.com GET /robots.txt HTTP/1.1
108-3 17697 0/57/515 W 0.30 32611 0 0.0 1.78 8.41 74.6.18.233 zachdotsey.com GET /wordpress/2008/12/ HTTP/1.0
109-3 19715 0/611/783 W 60.52 29153 0 0.0 5.94 7.20 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
110-3 13952 0/345/614 W 5.95 33656 0 0.0 3.47 8.18 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
111-3 32009 0/75/1959 W 5.25 24778 0 0.0 1.06 22.60 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
112-3 17793 0/35/178 W 11.11 32590 0 0.0 0.44 1.92 74.6.18.233 zachdotsey.com GET /wordpress/2008/12/ HTTP/1.0
113-3 19533 0/8/2004 W 0.16 16705 0 0.0 1.32 34.66 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
114-3 22622 0/304/925 W 181.63 28201 0 0.0 5.05 12.30 72.30.161.222 zachdotsey.com GET /wordpress/2008/10/26/tiring-surf-sessions/ HTTP/1.0
115-3 26656 0/38/763 W 0.55 27724 0 0.0 0.40 6.22 75.219.249.154 zachdotsey.com GET /wordpress/tag/missy-warkentien/ HTTP/1.1
116-3 31804 0/57/3039 W 2.17 10748 0 0.0 1.27 44.70 142.166.3.122 zachdotsey.com GET /wordpress/2009/07/13/millys-first-time-in-a-restaurant/ HT
117-3 26658 0/0/866 W 14.05 28069 0 0.0 0.00 11.50 74.6.18.233 zachdotsey.com GET /robots.txt HTTP/1.0
118-3 26659 0/46/646 W 4.59 27608 0 0.0 0.47 4.90 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
119-3 5457 0/86/998 W 21.35 21916 0 0.0 1.59 14.79 69.147.79.37 zachdotsey.com GET /robots.txt HTTP/1.0
120-3 9855 0/486/1470 W 58.03 18535 0 0.0 8.31 25.07 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
121-3 17802 0/8/206 W 0.05 32743 0 0.0 0.00 1.67 74.6.18.233 zachdotsey.com GET /wordpress/2008/12/ HTTP/1.0
122-3 17803 0/10/141 W 0.19 32701 0 0.0 0.00 1.08 74.6.18.233 zachdotsey.com GET /wordpress/2008/12/ HTTP/1.0
123-3 19888 0/69/120 W 0.37 31389 0 0.0 0.97 1.10 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
124-3 25184 0/160/689 W 33.97 27701 0 0.0 5.24 9.16 75.219.249.154 zachdotsey.com GET /wordpress/tag/missy-warkentien/ HTTP/1.1
125-3 27208 0/615/2460 W 28.73 10736 0 0.0 7.88 44.54 142.166.3.122 zachdotsey.com GET /wordpress/2009/07/14/millys-smile/ HTTP/1.1
126-3 21945 0/281/410 W 4.56 29359 0 0.0 3.82 7.16 74.6.18.233 zachdotsey.com GET /robots.txt HTTP/1.0
127-3 25187 0/392/429 W 58.81 25928 0 0.0 7.26 7.47 75.219.249.154 zachdotsey.com GET /wordpress/ HTTP/1.1
128-3 21948 0/223/299 W 2.32 30044 0 0.0 1.29 1.77 66.249.66.2 zachdotsey.com GET /robots.txt HTTP/1.1
129-3 27517 0/211/551 W 60.71 25918 0 0.0 4.73 10.25 75.219.249.154 zachdotsey.com GET /wordpress/2009/07/15/andre-dawkins-to-duke-a-year-early/ H
130-3 9078 1/150/753 W 13.68 21327 0 0.4 2.78 11.88 208.92.218.250 zachdotsey.com GET /wordpress/ HTTP/1.1
131-3 20742 0/97/2004 W 1.96 15475 0 0.0 2.14 35.30 78.31.110.126 zachdotsey.com GET /wordpress/feed HTTP/1.1
132-3 12265 0/658/1664 W 62.77 16822
您是否在问题时间看到很多请求POST /wordpress/wp-admin/admin-ajax.php？如果是这样，那么它可能是由于垃圾邮件发送者试图暴力破解某些东西，故意的 DoS 尝试，或者仅仅是因为该站点时不时地在繁忙的某个地方发布（您的日志是否显示许多请求来自同一个关闭） -网站推荐人？）。
这也可能是数据库锁定问题，即一个请求要求在频繁访问的表上使用完全拒绝读取直到完成锁定执行长时间操作，而其他请求只是卡在等待释放锁定（这可能是自然发生的，也可能是因为你杀死了 Apache 并因此杀死了持有锁的连接。如果站点足够忙，那么这可能会产生大量负载，因为创建了大量 Apache 进程，然后占用内存直到它们可以继续通过锁定 - 如果您的 Apache 配置可以创建相对不受限制的子进程数量，那么此时系统可以轻松开始交换交换。
要查看负载是否由 CPU 使用、数据库访问等引起的 IO 或交换抖动引起的 IO 引起，您需要调查 htop（或只是普通 top）、free 和其他常见的输出系统负载监控工具。这可能会提供有关问题根源在哪里的更多线索。
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