[chef] About stopping the chef server instance (v0.7)

[Dikang Gu < >]

Hi guys,

When I run the "sudo chef-server -c2 -p 4002", I find that 4 processes are started:

 :~$ sudo chef-server -c2 -p 4002
 ~ In 8938
 :~$ ps -e | grep ruby
 3426 ?        00:00:07 ruby
 4031 ?        00:02:57 ruby
 4032 ?        00:00:00 ruby
 4033 ?        00:00:00 ruby
 8938 ?        00:00:00 ruby
 8940 ?        00:00:00 ruby
 8941 ?        00:00:00 ruby
 8942 ?        00:00:00 ruby

I know that the 8941 listens to the port 4002, and 8942 listens to 4003,  but what are the 8938 and 8940 used for?

If I'd like to stop this chef server instance, I have to stop the process 8940, right? why?

Thanks
Dikang