Сервер на Debian 6, nginx, php-fpm
В логах php-fpm периодически лезет ошибка (жирным выделил):
root@debian:/var/www# tail -50 /var/log/php5-fpm.log
[08-Aug-2012 19:23:09] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[08-Aug-2012 19:59:19] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[08-Aug-2012 20:11:52] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[08-Aug-2012 20:13:37] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[08-Aug-2012 20:55:34] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[08-Aug-2012 21:09:04] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[08-Aug-2012 21:24:17] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[08-Aug-2012 21:27:55] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[08-Aug-2012 21:45:04] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[08-Aug-2012 23:33:39] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 01:25:01] WARNING: [pool www] child 9282 exited with code 1 after 212.182571 seconds from start
[09-Aug-2012 01:25:01] NOTICE: [pool www] child 9288 started
[09-Aug-2012 01:30:23] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 01:34:59] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 01:38:19] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 01:56:23] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 02:03:54] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 02:28:08] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 02:50:34] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 02:51:40] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 03:04:43] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 03:30:55] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 03:41:19] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 03:44:19] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 03:48:22] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 03:49:10] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 04:07:27] WARNING: [pool www] child 12043 exited on signal 11 (SIGSEGV) after 35.646667 seconds from start
[09-Aug-2012 04:07:27] NOTICE: [pool www] child 12063 started
[09-Aug-2012 04:32:46] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 06:26:23] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 08:17:44] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 08:51:59] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 09:04:46] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 09:17:01] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 09:19:55] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 09:48:37] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[09-Aug-2012 10:23:50] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
[10-Aug-2012 01:21:55] NOTICE: Terminating ...
[10-Aug-2012 01:21:55] NOTICE: exiting, bye-bye!
[10-Aug-2012 01:21:59] NOTICE: configuration file /etc/php5/fpm/php-fpm.conf test is successful
[10-Aug-2012 01:21:59] NOTICE: fpm is running, pid 25077
[10-Aug-2012 01:21:59] NOTICE: ready to handle connections
[10-Aug-2012 01:46:33] NOTICE: Terminating ...
[10-Aug-2012 01:46:33] NOTICE: exiting, bye-bye!
[10-Aug-2012 01:46:37] NOTICE: configuration file /etc/php5/fpm/php-fpm.conf test is successful
[10-Aug-2012 01:46:37] NOTICE: fpm is running, pid 25727
[10-Aug-2012 01:46:37] NOTICE: ready to handle connections
[10-Aug-2012 02:44:23] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
Приходится рестартовать php5-fpm, но это же не дело.
Было выяснено, что проблема начала возникать после установки на сервере php-скрипта, который довольно медленно работает, но это же все равно не должно ложить сервер.
php -v
PHP 5.3.10-1~dotdeb.1 with Suhosin-Patch (cli) (built: Feb 2 2012 23:28:08)
Copyright (c) 1997-2012 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2012 Zend Technologies
with Suhosin v0.9.33, Copyright (c) 2007-2012, by SektionEins GmbH
П.С. Читал аналогичную тему на форуме, но там как я понимаю вопрос так и не был решен.

, просто чтобы не нарушалась структура решил именно так подключать.