Modify apache concurrency in windows

 

Modify the maximum number of connections of apache as follows:

 

Step 1

First modify the/path/apache/conf/httpd. conf file.

# Vi httpd. conf

Remove "#" before "# Include conf/extra/httpd-mpm.conf" and save it.

 

Step 2

Modify the/path/apache/conf/extra/httpd-mpm.conf file.

# Vi httpd-mpm.conf

Find this line

 

Original:

 

StartServers 5

MinSpareServers 5

MaxSpareServers 10

MaxClients 150

MaxRequestsPerChild 0

 

After modification

 

ServerLimit 1000 # maximum concurrency

StartServers 10 # default number of startup threads

MinSpareServers 5

MaxSpareServers 15

MaxClients 1000 # requests simultaneously processed by apache

ThreadsPerChild 250 # Number of threads for each process. After these threads are created at startup, a new thread is no longer created. The default value is 64 and the maximum value is 1920.

MaxRequestsPerChild 5000 # The default value 0 is not recommended in the official reference manual. It is mainly based on two considerations: (1) it can prevent (accidental) infinite Memory leakage and thus consume the memory; (2) give the process a limited life, # This helps reduce the number of active processes when the server load is reduced.

 

 

 

Note:

ServerLimit this command must be placed in the first line.

 

 

After modification, you must stop apachectl restart first and then start apachectl.

 

Certificate ---------------------------------------------------------------------------------------------------------------------------------------

 

If you follow the above steps, you will find that there is no effect (at least I do), because in win2003, mpm_prefork_module is not used, but mpm_winnt_module, serverLimit 1000 is invalid in mpm_winnt_module. After looking for an afternoon, I couldn't find a way to increase the apahce concurrency in the window. I guess the maximum number of concurrent connections may be the maximum number of connections on the server?

 

2011-8-27

 

Today I have pondered again, or modify conf/extra/httpd-mpm.conf file, since in windows is mpm_winnt_module, then modify this try

 

My default is

 

<IfModule mpm_winnt_module>

ThreadsPerChild 150

MaxRequestsPerChild 0

</IfModule>

 

The concurrency of the AB test is about 250.

 

Try to modify

 

ThreadsPerChild 250

MaxRequestsPerChild 5000

 

The AB test may not work in more than 300 cases. Modifications to ThreadsPerChild are still effective.

 

It seems that the maximum number of concurrent threads is about 1.5 times that of ThreadsPerChild (you can try it)

 

 

From leiyonglin's blog