nginx + php 5.3.5 fpm result is high server load

[izrodix]

Hi Guys,
we try to migrate our apache 2.2 mod_fcgid with php-cgi configuration 
to nginx + php-fpm from ports on our freebsd 8.2 stable system.We hosted
round 200-300 sites.

The result is high load of the server, lots of system calls and
mysql-server 5.1.55 has doubling his threads.

Any suggestion ?

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,178667,178667#msg-178667