本文章来给各位同学介绍判断apache的工作模式是prefork模式还是worker模式，测试方法我们只要使用http来操作。

apache常用的工作模式有prefork和worker模式。运行命令httpd -l 或者apache2 -l ，输出的结果中如果含有prefork.c，那就是prefork模式，如果结果中含有worker.c，那就是worker模式。

知道模式之后我们可以在apache的confextrahttpd-mpm.conf 进行编辑了

## Server-Pool Management (MPM specific)### PidFile: The file in which the server should record its process# identification number when it starts.## Note that this is the default PidFile for most MPMs.#<IfModule !mpm_netware_module> PidFile "logs/httpd.pid"</IfModule>## The accept serialization lock file MUST BE STORED ON A LOCAL DISK.#<IfModule !mpm_winnt_module><IfModule !mpm_netware_module>LockFile "logs/accept.lock"</IfModule></IfModule>## Only one of the below sections will be relevant on your# installed httpd. Use "apachectl -l" to find out the# active mpm.## prefork MPM# StartServers: number of server processes to start# MinSpareServers: minimum number of server processes which are kept spare# MaxSpareServers: maximum number of server processes which are kept spare# MaxClients: maximum number of server processes allowed to start# MaxRequestsPerChild: maximum number of requests a server process serves<IfModule mpm_prefork_module> StartServers 5 MinSpareServers 5 MaxSpareServers 10 MaxClients 150 MaxRequestsPerChild 0</IfModule># worker MPM# StartServers: initial number of server processes to start# MaxClients: maximum number of simultaneous client connections# MinSpareThreads: minimum number of worker threads which are kept spare# MaxSpareThreads: maximum number of worker threads which are kept spare# ThreadsPerChild: constant number of worker threads in each server process# MaxRequestsPerChild: maximum number of requests a server process serves<IfModule mpm_worker_module> StartServers 2 MaxClients 150 MinSpareThreads 25 MaxSpareThreads 75 ThreadsPerChild 25 MaxRequestsPerChild 0</IfModule># BeOS MPM# StartThreads: how many threads do we initially spawn?# MaxClients: max number of threads we can have (1 thread == 1 client)# MaxRequestsPerThread: maximum number of requests each thread will process<IfModule mpm_beos_module> StartThreads 10 MaxClients 50 MaxRequestsPerThread 10000</IfModule># NetWare MPM# ThreadStackSize: Stack size allocated for each worker thread# StartThreads: Number of worker threads launched at server startup# MinSpareThreads: Minimum number of idle threads, to handle request spikes# MaxSpareThreads: Maximum number of idle threads# MaxThreads: Maximum number of worker threads alive at the same time# MaxRequestsPerChild: Maximum number of requests a thread serves. It is# recommended that the default value of 0 be set for this# directive on NetWare. This will allow the thread to# continue to service requests indefinitely. <IfModule mpm_netware_module> ThreadStackSize 65536 StartThreads 250 MinSpareThreads 25 MaxSpareThreads 250 MaxThreads 1000 MaxRequestsPerChild 0 MaxMemFree 100</IfModule># OS/2 MPM# StartServers: Number of server processes to maintain# MinSpareThreads: Minimum number of idle threads per process,# to handle request spikes# MaxSpareThreads: Maximum number of idle threads per process# MaxRequestsPerChild: Maximum number of connections per server process<IfModule mpm_mpmt_os2_module> StartServers 2 MinSpareThreads 5 MaxSpareThreads 10 MaxRequestsPerChild 0</IfModule># WinNT MPM# ThreadsPerChild: constant number of worker threads in the server process# MaxRequestsPerChild: maximum number of requests a server process serves<IfModule mpm_winnt_module> ThreadsPerChild 150 MaxRequestsPerChild 0</IfModule>

我们如果是windows系统一般是使用最后面的winnt mpm来操作了。