nginx + php 5.3.5 fpm result is high server load

[Matthew Macdonald-Wallace]

On Sat, 2011-02-26 at 16:52 -0500, izrodix wrote:
> 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 ?

What's the filesystem format underneath? We've seen some issues recently
with NFS performance if the PHP include path is in the wrong order which
drove the load up to over 200 on a 24-core server with 16G RAM.

We also saw some issues with the maximum memory limits set
in /etc/sysctl.conf which created "false" load in a similar range on the
same box.

HTH,

M.