[debian] processi

[lillop]

Salve

Sto cercando un pò di capire i processi attivi nativi di una distro minimal, in questo caso debian 5 (anche se non credo che cambia molto dalle altre distro)

Ho installato apt-get install apache2 e lanciato pstree:
r18811:/etc/apache2# pstree -p

init(1)-+-apache2(7253)-+-apache2(7255)
| |-apache2(7259)-+-{apache2}(7261)
| | |-{apache2}(7262)
| | |-{apache2}(7263)
| | |-{apache2}(7264)
| | |-{apache2}(7265)
| | |-{apache2}(7267)
| | |-{apache2}(7268)
| | |-{apache2}(7269)
| | |-{apache2}(7270)
| | |-{apache2}(7271)
| | |-{apache2}(7272)
| | |-{apache2}(7273)
| | |-{apache2}(7274)
| | |-{apache2}(7275)
| | |-{apache2}(7276)
| | |-{apache2}(7277)
| | |-{apache2}(7278)
| | |-{apache2}(7279)
| | |-{apache2}(7280)
| | |-{apache2}(7281)
| | |-{apache2}(7282)
| | |-{apache2}(7283)
| | |-{apache2}(7284)
| | |-{apache2}(7286)
| | |-{apache2}(7288)
| | `-{apache2}(7289)
| `-apache2(7266)-+-{apache2}(7290)
| |-{apache2}(7291)
| |-{apache2}(7292)
| |-{apache2}(7293)
| |-{apache2}(7294)
| |-{apache2}(7295)
| |-{apache2}(7296)
| |-{apache2}(7297)
| |-{apache2}(7298)
| |-{apache2}(7299)
| |-{apache2}(7300)
| |-{apache2}(7301)
| |-{apache2}(7302)
| |-{apache2}(7303)
| |-{apache2}(7304)
| |-{apache2}(7305)
| |-{apache2}(7306)
| |-{apache2}(7307)
| |-{apache2}(7308)
| |-{apache2}(7309)
| |-{apache2}(7310)
| |-{apache2}(7311)
| |-{apache2}(7312)
| |-{apache2}(7313)
| |-{apache2}(7314)
| `-{apache2}(7315)
|-getty(3166)
|-getty(3169)
|-getty(3170)
|-getty(3172)
|-getty(3173)
|-getty(3174)
|-getty(3176)
|-mdadm(3119)
|-named(3053)-+-{named}(3055)
| |-{named}(3056)
| |-{named}(3057)
| |-{named}(3058)
| |-{named}(3059)
| `-{named}(3060)
|-oco-tcpresponde(6704)
|-rsyslogd(3009)-+-{rsyslogd}(3011)
| `-{rsyslogd}(3012)
|-sshd(3071)---sshd(4845)---sshd(4848)---bash(4851)---su(4867)---bash(4868)---su(6855)---bash(6856)---su(6938)---bash(6939)---su(6985)---bash(6987)-+
`-udevd(1299)


Come mai ci sono tutti questi processi di apache?
Perchè non ce 1 solo?
E perchè se invece faccio ps mostra 4 processi?

root:/etc/apache2# ps -aux | grep apache2

root 7253 0.0 0.2 13240 2788 ? Ss 12:34 0:00 /usr/sbin/apache2 -k start
www-data 7255 0.0 0.1 13012 1988 ? S 12:34 0:00 /usr/sbin/apache2 -k start
www-data 7259 0.0 0.3 234892 3656 ? Sl 12:34 0:00 /usr/sbin/apache2 -k start
www-data 7266 0.0 0.3 234720 3352 ? Sl 12:34 0:00 /usr/sbin/apache2 -k start
root 7339 0.0 0.0 3604 700 pts/0 S+ 15:09 0:00 grep apache2

[sacarde]

dipende dalle transazioni attive nel momento
e dai valori di configurazione del server apache


p.s.

http://www.giorgiotave.it/forum/linu...di-numero.html

http://www.hwupgrade.it/forum/archiv.../t-669631.html