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PHP FastCGI Process Manager (PHP-FPM) is an alternative FastCGI daemon for PHP that allows a website to handle high loads. PHP-FPM maintains pools (workers that can respond to PHP requests) to accomplish this. PHP-FPM is faster than traditional CGI-based methods, such as SUPHP, for multi-user PHP environments. It does not overload a system's memory with PHP from Apache processes.


Warning:

We strongly recommend that you only activate Apache PHP-FPM if your server has at least 2 GB of RAM available, or at least 30 MB of RAM per domain. If you enable PHP-FPM on a server with less than the required RAM, your server may experience severe performance issues.


Note:

  • LiteSpeed Web Server uses the lsphp binary. LiteSpeed Web Server does not use the system's PHP-FPM implementation in WHM's MultiPHP Manager interface (WHM >> Home >> Software >> MultiPHP Manager).

  • To monitor applications that use PHP-FPM, select the Monitor checkbox for the PHP-FPM service for cPanel Daemons service in WHM’s Service Manager interface (WHM >> Home >> Service Configuration >> Service Manager).

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Additional documentation