opcache.huge_code_pages
INI • Added in PHP 7.0
opcache: opcache.huge_code_pages — Enables or disables copying of PHP code (text segment) into HUGE PAGES. Under certain circumstances (if only a single global PHP process is started from which all others fork), this can increase performance by a tiny amount because TLB misses are reduced. On the other hand, this delays PHP startup, increases memory usage and degrades performance under memory pressure - use with care. Requires appropriate OS configuration.
| Default value | 0 |
| Development value | 0 |
| Production value | 0 |
Modifiability: INI_SYSTEM - The opcache.huge_code_pages INI directive directive is a system-directive, and can only be configured in php.ini files or Server-API configuration files such as Apache httpd.conf. It cannot be configured with ini_set calls.
[opcache]
opcache.huge_code_pages = 0Changes to the opcache.huge_code_pages INI
PHP 7.0
- INI directive added
opcache.huge_code_pages INI Availability
opcache.huge_code_pages INI Availability| PHP Version | Availability |
|---|---|
| PHP 8.5Future Release | Yes |
| PHP 8.4Upcoming Release | Yes |
| PHP 8.3Supported (Latest) | Yes |
| PHP 8.2Supported | Yes |
| PHP 8.1Security-Fixes Only | Yes |
| PHP 8.0Unsupported | Yes |
| PHP 7.4Unsupported | Yes |
| PHP 7.3Unsupported | Yes |
| PHP 7.2Unsupported | Yes |
| PHP 7.1Unsupported | Yes |
| PHP 7.0Unsupported | Yes |
| PHP 5.6Unsupported | No |
| PHP 5.5Unsupported | No |
| PHP 5.4Unsupported | No |
| PHP 5.3Unsupported | No |