php -v (with APC enabled)
PHP 5.4.9-4ubuntu2.4 (cli) (built: Dec 12 2013 04:29:20)
Copyright (c) 1997-2012 The PHP Group
Zend Engine v2.4.0, Copyright (c) 1998-2012 Zend Technologies
apache2 -v
Server version: Apache/2.2.22 (Ubuntu)
Server built: Jul 12 2013 13:18:14
CPU
16 Core
Extended brand string: "Intel(R) Xeon(R) CPU E5620 @ 2.40GHz"
CLFLUSH instruction cache line size: 8
Initial APIC ID: 3
Hyper threading siblings: 32
RAM
8GB
Apache prefork
<IfModule mpm_prefork_module>
StartServers 10
MinSpareServers 10
MaxSpareServers 30
MaxClients 150
MaxRequestsPerChild 0
</IfModule>