How to set the concurrency number of Apache _php tutorial

How to set the number of concurrent Apache

Website slow response is not necessarily a problem with the program or database, Apache concurrent number setting problem will also lead to when the site traffic is too large when the request is particularly slow or failure problem, then how to set the concurrency of Apache?

1. Modify in the httpd.conf file

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

Remove the # comment from the above sentence

2, determine the current Apache is what MPM mode (winnt mode, perfork mode, worker mode)

Go to the Apache/bin directory

CMD command: httpd.exe-1

Description: See mpm_xxx.c if XXX is winnt description is Winnt, also may be perfork 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

Threadsperchild 150//modify this value to
Maxrequestsperchild 0

4. Restart Apache, test to see

Under Linux, the generally used MPM is the perfork mode

Startservers 5//Pre-start 5 processes
Minspareservers 5//Minimum Idle Process
Maxspareservers 10//MAX Idle Process
MaxClients 150//Number of concurrent connections
Maxrequestsperchild 0//refers to how many threads can be played in a process, better for the worker, 0 for unrestricted

Give everyone a reasonable suggestion to configure, on the partial site, medium website, configuration:

Startservers 5//Pre-start 5 processes
Minspareservers 5//Minimum Idle Process
Maxspareservers 10//MAX Idle Process
Serverlimit 1500//For modifying Apache programming parameters
MaxClients 1000//number of concurrent connections
Maxrequestsperchild 0//refers to how many threads can be played in a process, better for the worker, 0 for unrestricted

If your site has a PV value of millions, you can set this up:

Serverlimit 2500//For modifying Apache programming parameters
MaxClients 2000//Number of concurrent connections

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