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FastCGI Process Manager (FPM)

Table of Contents

• Installation
• Configuration

FPM (FastCGI Process Manager) is an alternative PHP FastCGI implementation with some additional features (mostly) useful for heavy-loaded sites.

These features include:

• advanced process management with graceful stop/start;

• ability to start workers with different uid/gid/chroot/environment, listening on different ports and using different php.ini (replaces safe_mode);

• stdout and stderr logging;

• emergency restart in case of accidental opcode cache destruction;

• accelerated upload support;

• "slowlog" - logging scripts (not just their names, but their PHP backtraces too, using ptrace and similar things to read remote process' execute_data) that are executed unusually slow;

• fastcgi_finish_request() - special function to finish request and flush all data while continuing to do something time-consuming (video converting, stats processing etc.);

• dynamic/static child spawning;

• basic SAPI status info (similar to Apache mod_status);

• php.ini-based config file.