Ubuntu服务器，太多的运行maxing-out CPU的apache2实例

我没有进入系统pipe理，但我知道什么时候服务器已经超时了。所有http请求都需要花费太多时间来完成。我附加在我的服务器上运行的“顶级”进程。

这是正常的吗？我究竟做错了什么？

（如果需要，我可以粘贴更多文件。）

请注意，服务器是用于testing目的，唯一的用户访问它，目前是我的。

运行“顶”显示太多的Apache进程

另外，这是我的apache2.conf文件：

PidFile ${APACHE_PID_FILE} Timeout 300 KeepAlive On MaxKeepAliveRequests 100 KeepAliveTimeout 5 <IfModule mpm_prefork_module> StartServers 5 MinSpareServers 5 MaxSpareServers 10 MaxClients 150 MaxRequestsPerChild 0 </IfModule> <IfModule mpm_worker_module> StartServers 2 MinSpareThreads 25 MaxSpareThreads 75 ThreadLimit 64 ThreadsPerChild 25 MaxClients 150 MaxRequestsPerChild 0 </IfModule> <IfModule mpm_event_module> StartServers 2 MinSpareThreads 25 MaxSpareThreads 75 ThreadLimit 64 ThreadsPerChild 25 MaxClients 150 MaxRequestsPerChild 0 </IfModule> User ${APACHE_RUN_USER} Group ${APACHE_RUN_GROUP} AccessFileName .htaccess <Files ~ "^\.ht"> Order allow,deny Deny from all Satisfy all </Files> DefaultType None HostnameLookups Off ErrorLog ${APACHE_LOG_DIR}/error.log LogLevel warn Include mods-enabled/*.load Include mods-enabled/*.conf Include ports.conf LogFormat "%v:%p %h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" vhost_combined LogFormat "%h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" combined LogFormat "%h %l %u %t \"%r\" %>s %O" common LogFormat "%{Referer}i -> %U" referer LogFormat "%{User-agent}i" agent Include conf.d/ Include sites-enabled/

这是服务器状态的输出：

 Apache Server Status for localhost Server Version: Apache/2.2.22 (Debian) PHP/5.4.39-0+deb7u2 mod_wsgi/3.3 Python/ 2.7.3 Server Built: Jul 24 2014 15:34:00 ------------------------------------------------------------------------------- Current Time: Tuesday, 23-Jun-2015 11:38:02 BST Restart Time: Tuesday, 23-Jun-2015 11:33:36 BST Parent Server Generation: 0 Server uptime: 4 minutes 25 seconds Total accesses: 54 - Total Traffic: 58 kB CPU Usage: u25.08 s1.64 cu0 cs0 - 10.1% CPU load .204 requests/sec - 224 B/second - 1099 B/request 4 requests currently being processed, 3 idle workers W_WW__..W....................................................... ................................................................ ................................................................ ................................................................ 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 0-0 13852 0/4 _ 5.07 2218 90 0.0 0.00 0.00 11.11.11.111 server1.project NULL /4 22/ 1-0 13854 22/ W 5.87 2235 0 42.2 0.04 0.04 11.11.11.111 server2.project2 GET /ajax/period_stats/?object_id=16106&period_unit=month&perio 22 2-0 13855 0/9 _ 4.87 2211 460 0.0 0.00 0.00 11.11.11.111 server1.project NULL /9 3-0 13857 0/8 _ 4.54 2218 341 0.0 0.01 0.01 11.11.11.111 server1.project NULL /8 4-0 13858 6/6 W 4.61 2224 0 1.6 0.00 0.00 11.11.11.111 server2.project2 GET /ajax/period_stats/?object_id=16110&period_unit=month&perio /6 5-0 13878 3/3 W 4.28 2224 0 0.5 0.00 0.00 11.11.11.111 server2.project2 GET /ajax/period_stats/?object_id=16104&period_unit=hour&period /3 6-0 13881 0/0 W 0.00 2203 0 0.0 0.00 0.00 11.11.11.111 server2.project2 GET /ajax/period_stats/?object_id=16104&period_unit=hour&period /0 7-0 13882 0/2 _ 5.27 2193 12446 0.0 0.00 0.00 11.11.11.111 server1.project NULL /2 8-0 13885 0/1 _ 0.01 1086 1 0.0 0.00 0.00 localhost server1.project GET /server-status HTTP/1.0 /1 9-0 13886 0/0 W 0.00 0 0 0.0 0.00 0.00 ::1 server1.project GET /server-status HTTP/1.0 /0 10-0 13887 0/1 _ 5.92 1317 14928 0.0 0.00 0.00 11.11.11.111 server2.project2 POST /core/user/exits/ HTTP/1.1 /1 11-0 13888 0/1 _ 0.00 62 1 0.0 0.00 0.00 localhost server1.project GET /server-status HTTP/1.0 /1

当你使用prefork模块和服务器只是为了testing你可以改变的值：看到你有2GB的RAM我会把它稍微小一点的值：

 <IfModule mpm_prefork_module> StartServers 2 MinSpareServers 2 MaxSpareServers 4 MaxClients 16 MaxRequestsPerChild 50 </IfModule>

那些是“随机”数字，因为我不知道您的应用程序或您正在pipe理的数据，但是应该足够以较小的影响进行testing。如果您要上线并期望更多用户，则需要调整该configuration。

您可以在Apache文档中看到这些值的解释，但简短的版本是使用prefork MPM Apache将创build一个进程池来为请求提供服务，build议configuration的池将会更小。