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Apache的fork模式和worker模式判断方法

2019年04月30日  | 移动技术网网络运营  | 我要评论

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。

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