Timeout when max-childrens reached.

Description

Referring to:
https://bz.apache.org/bugzilla/show_bug.cgi?id=66603

It will be nice to set a timeout limit when connection will be terminated after trying to get free childrens of php-fpm. These limit should be smaller then max_execution_time or apache's timeouts because it will help with durability durring ddos attacks or with bugged apps. It specially important for shared servers, while one of app will reached max-childrens and there will be still incomming connections, so with waiting for childrens in infinity time or 300 seconds like apaches do it's to long and another limit's of server can be reached. These connections must be terminated alot faster, and timeout of http server cannot be smaller because of max_execution_time.

Commencez par lire le rapport Bugzilla lié concernant l’attente de PHP-FPM après l’atteinte de max_children, puis localisez les points d’entrée des connexions PHP-FPM et de la gestion des processus enfants. Définissez le comportement du délai d’expiration configurable et ses cas d’échec avant d’identifier les tests pertinents ; le travail est terminé lorsque les connexions surchargées se terminent dans cette limite sans modifier le comportement existant des délais d’expiration d’exécution ou HTTP.