Apache2

cam34 · 07-26-2007, 08:09 PM

Hi!
I have a apache2, PHP and mysql server running on the same machine.
when i type 'ps aux'
I have 11x

/usr/sbin/apache2 -k start -DSSL.

Listed.
Of which root owns one and www-data owns 10.

I then type '/etc/init.d/apache2 stop'
All processes die, I then restart with: '/etc/init.d/apache2 start'

Code:

root      3974  1.6  3.2  51216  6212 ?        Ss   21:37   0:00 /usr/sbin/apache2 -k start -DSSL
www-data  3978  0.0  1.6  51216  3220 ?        S    21:37   0:00 /usr/sbin/apache2 -k start -DSSL
www-data  3979  0.0  1.6  51216  3220 ?        S    21:37   0:00 /usr/sbin/apache2 -k start -DSSL
www-data  3980  0.0  1.6  51216  3220 ?        S    21:37   0:00 /usr/sbin/apache2 -k start -DSSL
www-data  3981  0.0  1.6  51216  3220 ?        S    21:37   0:00 /usr/sbin/apache2 -k start -DSSL
www-data  3982  0.0  1.6  51216  3220 ?        S    21:37   0:00 /usr/sbin/apache2 -k start -DSSL

And i now have 6 processes - of which root owns 1x

My questions are:
Should this many processes be running on an idle (but used) machine.
How do i stop root from running one of them (process) - Is this normal?
How can i stop 11x processes starting when rebooted? (Eats all the memory)

Thanks
--cAm

bathory · 07-27-2007, 09:13 AM

The first process (the one owned by root) is used to spawn the others that are actually used for connections. The number of these processes is defined by the "StartServers" option in httpd.conf.

cam34 · 07-28-2007, 04:26 AM

would you have 1 process per connection or can a process handle more than connection?

bathory · 07-28-2007, 10:01 AM

From apache documentation:

Quote:

The StartServers directive sets the number of child server processes created on startup. As the number of processes is dynamically controlled depending on the load, there is usually little reason to adjust this parameter.
The default value differs from MPM to MPM. For worker the default is StartServers 3. For prefork defaults to 5 and for mpmt_os2 to 2.
top

Every child process created can serve one request.

cam34 · 07-28-2007, 05:19 PM

Dynmamic you say. Ok well great that answer my questions I suppose.

Thanks