Centos setup httpd-2.2 or httpd-2.4 mpm mode

MPM multi-Process Processing module

MPM is divided into three modes:

1,prefork

Process model, each process processes a request, pattern: Parent Process —————— > multiple child Processes —————— > One child process processing a request

2,worker

Threading model, each process derives multiple threads, each thread processes a request, pattern: Parent Process —————— > multiple child processes —————— > Multiple threads are derived from each child process-------> One thread processes a request task

3,event

Event-driven model, a process that processes multiple tasks, patterns: Parent process ———————— > multiple child processes--------> One child process processing multiple requests

CENTOS6 httpd-2.2 MPM Setup

Modify a file

/etc/sysconfig/httpd

Httpd=/usr/sbin/httpd.worker

Httpd=/usr/sbin/httpd.event

Default to Prefork mode

Restart HTTPD server after configuration is in effect

CENTOS7 httpd-2.4 MPM Setup

Modify File/etc/httpd/conf.modules.d/00-mpm.conf

LoadModule Mpm_prefork_module modules/mod_mpm_prefork.so

LoadModule Mpm_worker_module modules/mod_mpm_worker.so

LoadModule Mpm_event_module modules/mod_mpm_event.so

Mode parameter Configuration detailed

<ifmodule prefork.c>//If the module is loaded, implement the configuration, a conditional module load

Startservers 8//service starts several sub-processes by default at startup

Minspareservers 5//Minimum number of idle processes

Maxspareservers 20//maximum number of idle processes

Serverlimit 256//Limit maxclients

MaxClients 256//MAX concurrency, which means simultaneous access to quantity

Maxrequestsperchild 4000//per child process maximum number of requests to process, kill and then restart after processing sufficient quantity

</IfModule>

This article is from the "Notes" blog, so be sure to keep this source http://snowbamboo1.blog.51cto.com/9291858/1860145

Centos setup httpd-2.2 or httpd-2.4 mpm mode