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Issue #24: Document new PHP OpCache configuration variables.

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Jeff Geerling 2015-04-30 16:01:04 -05:00
parent c1cf287346
commit da59049bc8
1 changed files with 21 additions and 1 deletions
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README.md
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@ -60,6 +60,26 @@ By default, all the extra defaults below are applied through the php.ini include
Various defaults for PHP. Only used if `php_use_managed_ini` is set to `true`.
### OpCache-related Variables
The OpCache is included in PHP starting in version 5.5, and the following variables will only take effect if the version of PHP you have installed is 5.5 or greater.
php_opcache_enabled_in_ini: false
When installing APC, depending on the system and whether running PHP as a webserver module or standalone via `php-fpm`, you might need the line `extension=apc.so` in `apc.ini`. If you need that line added (e.g. you're running `php-fpm`), set this variable to true.
php_opcache_enable: "1"
php_opcache_enable_cli: "0"
php_opcache_memory_consumption: "96"
php_opcache_interned_strings_buffer: "16"
php_opcache_max_accelerated_files: "4096"
php_opcache_max_wasted_percentage: "5"
php_opcache_validate_timestamps: "1"
php_opcache_revalidate_freq: "2"
php_opcache_max_file_size: "0"
OpCache ini directives that are often customized on a system. Make sure you have enough memory and file slots allocated in the OpCache (`php_opcache_memory_consumption`, in MB, and `php_opcache_max_accelerated_files`) to contain all the PHP code you are running. If not, you may get less-than-optimal performance!
### APC-related Variables
php_enable_apc: true
@ -75,7 +95,7 @@ When installing APC, depending on the system and whether running PHP as a webser
php_apc_stat: "1"
php_apc_enable_cli: "0"
APC ini directives that are often customized on a system. Set `php_apc_cache_by_default` to 0 to disable APC by default (so you could enable it on a host-by-host basis). Set the `php_apc_shm_size` so it will hold all your application code in memory with a little overhead (fragmentation or APC running out of memory will slow down PHP *dramatically*).
APC ini directives that are often customized on a system. Set `php_apc_cache_by_default` to 0 to disable APC by default (so you could just enable it for one codebase if you have a *lot* of code on a server). Set the `php_apc_shm_size` so it will hold all your application code in memory with a little overhead (fragmentation or APC running out of memory will slow down PHP *dramatically*).
#### Ensuring APC is installed