Summary of PHP-FPM optimization

PHP-FPM Optimization Summary

Environment: php5.6.1

1. How do I enable it?
Add--ENABLE-FPM when compiling the installation
2. How to optimize?
Before optimization according to business requirements planning, then must do stress testing;
The main document for optimization is php-fpm.conf

(1) Number of processes set

PM = dynamic

Pm.max_children = 15

Pm.start_servers = 5

Pm.min_spare_servers = 5

Pm.max_spare_servers = 15

(2) Maximum number of processing requests

The maximum number of processing requests is when a PHP-FPM worker process terminates after processing the number of requests, and the master process re-respawn the new one.

This configuration avoids memory leaks caused by the PHP interpreter itself or the program.

The default value is 500,

Pm.max_requests = 1024

Such a plan, 1 seconds

Maximum number of requests: 15*1024=15360

Minimum number of requests: 5*1024=7120

3. How to avoid the program hang dead?
Periodically reload PHP-FPM on a server with high load
Reload can smooth restart without affecting the production system PHP script run
Reload once every 15 minutes
0-59/15 * * * */USR/LOCAL/PHP/SBIN/PHP-FPM Reload

This article only discusses the optimization of PHP-FPM

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