Question

我们正在使用apache版本4。我们的服务器正在获得8000个并发连接。以下是我们的工作程序模块配置

<IfModule mpm_worker_module>
    ServerLimit             16
    StartServers             20
    MaxClients                 8000
    MinSpareThreads         512
    MaxSpareThreads        1024
    ThreadsPerChild         64
    MaxRequestWorkers      1024
    MaxConnectionsPerChild 10000
</IfModule>

使用上述配置，我们在apache服务器error.log中遇到以下错误

[Mon Nov 12 12:38:58.838952 2018] [mpm_winnt:notice] [pid 3304:tid 480] AH00418: Parent: Created child process 6416
[Mon Nov 12 12:38:59.745235 2018] [jk:warn] [pid 6416:tid 364] No JkLogFile defined in httpd.conf. Using default C:/Apache/logs/mod_jk.log
[Mon Nov 12 12:38:59.917109 2018] [jk:warn] [pid 6416:tid 364] No JkLogFile defined in httpd.conf. Using default C:/Apache/logs/mod_jk.log
[Mon Nov 12 12:38:59.932736 2018] [mpm_winnt:notice] Child: Starting 250 worker threads.
[Mon Nov 12 12:39:06.471238 2018] [mpm_winnt:error]  Server ran out of threads to serve requests. Consider raising the ThreadsPerChild setting

在那之后，我们将ThreadsPerChild更改为100，在那之后，我们得到了以下错误

[Mon Nov 12 12:47:35.837220 2018] [core:notice] [pid 3304:tid 480] AH00094: Command line: 'C:\\Apache\\bin\\httpd.exe -d C:/ApacheWeb'
[Mon Nov 12 12:47:35.837220 2018] [mpm_winnt:notice] [pid 3304:tid 480] AH00418: Parent: Created child process 9188
[Mon Nov 12 12:47:36.821579 2018] [jk:warn] [pid 9188:tid 368] No JkLogFile defined in httpd.conf. Using default C:/ApacheWeb/logs/mod_jk.log
[Mon Nov 12 12:47:37.102834 2018] [jk:warn] [pid 9188:tid 368] No JkLogFile defined in httpd.conf. Using default C:/ApacheWeb/logs/mod_jk.log
[Mon Nov 12 12:47:37.118481 2018] [mpm_winnt:notice] [pid 9188:tid 368] AH00354: Child: Starting 250 worker threads.
[Mon Nov 12 12:48:02.464408 2018] [mpm_winnt:error] [pid 9188:tid 6488] AH00326: Server ran out of threads to serve requests. Consider raising the ThreadsPerChild setting
[Mon Nov 12 12:48:10.216397 2018] [mpm_winnt:notice] [pid 7888:tid 364] AH00362: Child: Waiting 30 more seconds for 29 worker threads to finish.
[Mon Nov 12 12:48:43.069214 2018] [mpm_winnt:notice] [pid 7888:tid 364] AH00362: Child: Waiting 0 more seconds for 7 worker threads to finish.
[Mon Nov 12 12:48:43.178567 2018] [mpm_winnt:notice] [pid 7888:tid 364] AH00363: Child: Terminating 7 threads that failed to exit.
[Mon Nov 12 12:48:43.178567 2018] [mpm_winnt:notice] [pid 7888:tid 364] AH00364: Child: All worker threads have exited.
[Mon Nov 12 12:49:37.253636 2018] [mpm_winnt:notice] [pid 9188:tid 368] AH00363: Child: Terminating 243 threads that failed to exit.
[Mon Nov 12 12:49:37.253636 2018] [mpm_winnt:notice] [pid 9188:tid 368] AH00364: Child: All worker threads have exited.

之后，我们使用以下配置

<IfModule mpm_worker_module>
    ServerLimit             125
    StartServers            20
    MinSpareThreads         512
    MaxSpareThreads         1024
    ThreadsPerChild         64
    MaxRequestWorkers       8000
    MaxConnectionsPerChild  10000
</IfModule>

现在我们低于日志

[Mon Nov 12 14:29:08.996704 2018] [core:notice] [pid 7124:tid 476] AH00094: Command line: 'C:\\Apache\\bin\\httpd.exe -d C:/Apache'
[Mon Nov 12 14:29:08.996704 2018] [mpm_winnt:notice] [pid 7124:tid 476] AH00418: Parent: Created child process 8708
[Mon Nov 12 14:29:09.981085 2018] [jk:warn] [pid 8708:tid 372] No JkLogFile defined in httpd.conf. Using default C:/Apache/logs/mod_jk.log
[Mon Nov 12 14:29:10.184213 2018] [jk:warn] [pid 8708:tid 372] No JkLogFile defined in httpd.conf. Using default C:/Apache/logs/mod_jk.log
[Mon Nov 12 14:29:10.199837 2018] [mpm_winnt:notice] [pid 8708:tid 372] AH00354: Child: Starting 250 worker threads.
[Mon Nov 12 14:29:43.361221 2018] [mpm_winnt:notice] [pid 5988:tid 372] AH00362: Child: Waiting 30 more seconds for 11 worker threads to finish.
[Mon Nov 12 14:30:00.549960 2018] [mpm_winnt:notice] [pid 5988:tid 372] AH00364: Child: All worker threads have exited.
[Mon Nov 12 14:31:33.959999 2018] [mpm_winnt:notice] [pid 8708:tid 372] AH00358: Child: Process exiting because it reached MaxConnectionsPerChild. Signaling the parent to restart a new child process.
[Mon Nov 12 14:31:33.959999 2018] [mpm_winnt:notice] [pid 7124:tid 476] AH00424: Parent: Received restart signal -- Restarting the server.

我们经常得到

Child: Process exiting because it reached MaxConnectionsPerChild. Signaling the parent to restart a new child process.

如何解决此错误，将不胜感激！

Answer 1

您正在使用Windows实现模块（mpm_winnt）而不是mpm_worker_module。尝试找到以下部分：

<IfModule mpm_winnt_module>
    ThreadsPerChild        1000
    MaxConnectionsPerChild   20000
	AcceptFilter http None    
    AcceptFilter https None  
</IfModule>

并修改ThreadsPerChild参数。

进程退出，因为它已到达apache服务器中的MaxConnectionsPerChild

1 个答案: