How to set the number of apache concurrent jobs

How to set the number of apache concurrent jobs

Slow website response is not necessarily a problem with programs or databases. If there is a problem with the apache concurrency setting, the request may be particularly slow or fail when the website traffic is too large, how can I set the number of apache concurrent jobs?

1. modify it in the httpd. conf file.

# Server-pool management (MPM specific)
# Include conf/extra/httpd-mpm.conf

Remove the # comment in the above sentence

2. determine the current MPM mode of apache (winnt mode, worker K mode, and worker mode)

Go to the apache/bin directory

Cmd command: httpd.exe-1

Note: mpm_xxx.c. If xxx is winnt, it indicates winnt. It may also be a worker K or worker.

3. Modify the httpd-mpm.conf File

# 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 // modify the value.
MaxRequestsPerChild 0
</IfModule>

4. Restart apache and test it.

In Linux, the MPM mode is generally used.
<IfModule mpm_prefork_module>
StartServers 5 // start five processes in advance
MinSpareServers 5 // minimum idle Process
MaxSpareServers 10 // maximum number of idle Processes
MaxClients 150 // number of concurrent connections
MaxRequestsPerChild 0 // specifies the number of threads in a process, which is better for worker. 0 is not limited.
</IfModule>

Provide you with reasonable suggestions for some websites and medium-sized websites:

<IfModule mpm_prefork_module>
StartServers 5 // start five processes in advance
MinSpareServers 5 // minimum idle Process
MaxSpareServers 10 // maximum number of idle Processes
ServerLimit 1500 // used to modify apache programming parameters
MaxClients 1000 // number of concurrent connections
MaxRequestsPerChild 0 // specifies the number of threads in a process, which is better for worker. 0 is not limited.
</IfModule>

If your website has a pv of 1 million, you can set it as follows:

ServerLimit 2500 // used to modify apache programming parameters
MaxClients 2000 // number of concurrent connections

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