&fpm.intro; These features include: advanced process management with graceful stop/start; pools that give ability to start workers with different uid/gid/chroot/environment, listening on different ports and using different php.ini (replaces safe_mode); configurable 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/ondemand/static child spawning; basic and extended status info (similar to Apache mod_status) with various formats like json, xml and openmetrics supported; php.ini-based config file. &install.fpm.install; &install.fpm.configuration;