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litespeed_wiki:php_lsapi:environment_variables [2013/09/24 19:50] Michael |
litespeed_wiki:php_lsapi:environment_variables [2013/09/24 19:53] (current) Michael |
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| There are two ways to let PHP handle multiple requests concurrently, server managed mode and self managed mode. In server managed mode, LiteSpeed Web Server dynamically spawns/stops PHP processes. In this mode, an external application's "Instances" setting should match the "Max Connections" configuration. To start PHP in self managed mode, "Instances" should be set to "1", while the "LSAPI_CHILDREN" environment variable should be >1 and set to match the value of "Max Connections". In this mode the web server will start one PHP process, and this process will start/stop child PHP processes dynamically based on on demand. Self managed mode is preferred because all PHP processes can then share one memory block for opcode caching. | There are two ways to let PHP handle multiple requests concurrently, server managed mode and self managed mode. In server managed mode, LiteSpeed Web Server dynamically spawns/stops PHP processes. In this mode, an external application's "Instances" setting should match the "Max Connections" configuration. To start PHP in self managed mode, "Instances" should be set to "1", while the "LSAPI_CHILDREN" environment variable should be >1 and set to match the value of "Max Connections". In this mode the web server will start one PHP process, and this process will start/stop child PHP processes dynamically based on on demand. Self managed mode is preferred because all PHP processes can then share one memory block for opcode caching. | ||
| - | If "LSAPI_CHILDREN" <=1, PHP will be started in server managed mode. | + | If "LSAPI_CHILDREN" %%<=%%1, PHP will be started in server managed mode. |
| Usually, there is no need to set the value of "LSAPI_CHILDREN" over "100". | Usually, there is no need to set the value of "LSAPI_CHILDREN" over "100". | ||