/etc/php5/fpm/pool.d/www.conf

www.conf

; pool name ('www' here)
[www]

; Unix user/group of processes
user = www-data
group = www-data

; The address on which to accept FastCGI requests.
listen = 127.0.0.1:9000

; Choose how the process manager will control the number of child processes.
pm = dynamic

; The number of child processes to be created when pm is set to 'static' and the
; maximum number of child processes when pm is set to 'dynamic' or 'ondemand'.
pm.max_children = 10

; The number of child processes created on startup.
pm.start_servers = 4

; The desired minimum number of idle server processes.
pm.min_spare_servers = 2

; The desired maximum number of idle server processes.
pm.max_spare_servers = 6

; Chdir to this directory at the start.
chdir = /