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<title>FastCGI Process Manager (FPM)</title>
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<h1>FastCGI Process Manager (FPM)</h1>
<h2>Table of Contents</h2><ul class="chunklist chunklist_chapter"><li><a href="install.fpm.install.html">Installation</a></li><li><a href="install.fpm.configuration.html">Configuration</a></li></ul>
<p class="para">
FPM (FastCGI Process Manager) is an alternative PHP FastCGI implementation
with some additional features (mostly) useful for heavy-loaded sites.
</p>
<p class="para">
These features include:
<ul class="itemizedlist">
<li class="listitem">
<p class="para">
advanced process management with graceful stop/start;
</p>
</li>
<li class="listitem">
<p class="para">
ability to start workers with different uid/gid/chroot/environment,
listening on different ports and using different php.ini (replaces safe_mode);
</p>
</li>
<li class="listitem">
<p class="para">
stdout and stderr logging;
</p>
</li>
<li class="listitem">
<p class="para">
emergency restart in case of accidental opcode cache destruction;
</p>
</li>
<li class="listitem">
<p class="para">
accelerated upload support;
</p>
</li>
<li class="listitem">
<p class="para">
"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;
</p>
</li>
<li class="listitem">
<p class="para">
<span class="function"><a href="function.fastcgi-finish-request.html" class="function">fastcgi_finish_request()</a></span> - special function to finish request and flush all data while
continuing to do something time-consuming (video converting, stats processing etc.);
</p>
</li>
<li class="listitem">
<p class="para">
dynamic/static child spawning;
</p>
</li>
<li class="listitem">
<p class="para">
basic SAPI status info (similar to Apache mod_status);
</p>
</li>
<li class="listitem">
<p class="para">
php.ini-based config file.
</p>
</li>
</ul>
</p>
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