I've just edit my PHP-FPM conf with :
[code]
<value name="emergency_restart_threshold">30</value>
<value name="emergency_restart_interval">0s</value>
<value name="process_control_timeout">5s</value>
[/code]
I hope it will correct my problem :)
Posted at Nginx Forum: http://forum.nginx.org/read.php?2,91854,92164#msg-92164