CloudLinux - Mod_lsapi Feature

The fastest way to serve PHP with Apache, keeping servers lightning-fast




Mod_lsapi is the fastest and most reliable way to serve PHP pages. It is a drop-in replacement for SuPHP, FCGID, RUID2, and ITK. It has a low memory footprint and understands PHP directives from .htaccess files. Mod_Isapi:

  • Is faster than any other way to serve PHP with Apache.
  • Doesn't suffer from stability issues in process management like PHP FPM and mod_fcgid.
  • Includes the full benefits of opcode caching.
  • Is compatible with MPM Worker and Event.
  • Does not require tuning.
  • Includes support for PHP directives in .htaccess files.
  • Is a drop-in replacement for existing ways to serve PHP.
  • Is fully compatible with PHP Selector.


Additional information


Why choose Mod_lsapi ? (included with cPanel*)

  • The fastest way to serve PHP from Apache.
  • Avoid process management stability issues (as with PHP FPM or mod_fcgid).
  • Better performance through opcode caching.
  • Compatibility with MPM Worker and Event.
  • No tuning needed.
  • Supports PHP directives in .htaccess files.
  • Drop-in replacement for common PHP-serving modules.
  • Fully compatible with PHP Selector.


What does Mod_lsapi PRO give you? (included with CloudLinux OS)

Up to 10% better performance

mod_lsapi PRO connection pooling improves performance by up to 10% compared with the standard mod_lsapi shipped with cPanel. CloudLinux OS eliminates connection setup delay by reusing connections previously established between Apache web server and LSAPI.


Faster startup after Apache restarts

Opcode caches stay hot between Apache restarts, because mod_lsapi PRO doesn't flush them.


Fast Time To First Byte (TTFB), with low memory footprints in multi-user environments

mod_lsapi PRO uses process checkpointing (CRIU) to save the state of PHP processes. It avoids using slow, in-memory persistence, delivering extreme TTFB ratings and a minimal memory footprint.


*Note, that Mod_lsapi is included free with cPanel, but it does not include any other CloudLinux OS features.

Highly Compatible

Enjoy the increased stability of CloudLinux OS without sacrificing compatibility. It works with all
major control panels and is compatible with most software commonly used with CentOS and RHEL.

Easy to Get Started

A single script converts existing servers without any customer configs or data changes.
A CentOS-like interface makes you feel instantly at home. It is highly compatible and works
with all software commonly used with CentOS and RHEL.

If you have any questions, please email sales at [email protected]

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