[olug] Spawning processes

[Chad S. Lauritsen]

okay, well, httpd will spawn a certain number of "child" servers to be
ready to handle requests based on a configuration file entry. i think
apache uses "StartServers" or something. check the files.

smb works in a similar way. i believe it may spawn a separate process to
handle each peer connecting to it.

"Williams, John W." wrote:
> 
> Actually by looking at the parent ID I see that the processes are spawning
> themselves.  For instance httpd initiated by init has spawned 6 other httpd
> processes.  I have also seen it with smb, inetd, and a couple others.
> 
>   F S   UID   PID  PPID  C PRI  NI ADDR    SZ WCHAN  TTY          TIME CMD
> 140 S     0  5198     1  0  61   0    -  1256 do_sel ?        00:00:03 httpd
> 100 S     0 19681     1  0  60   0    -   318 read_c tty1     00:00:00
> mingetty
> 140 S    99 21512  5198  0  60   0    -  1366 wait_f ?        00:00:00 httpd
> 140 S    99 21513  5198  0  60   0    -  1366 posix_ ?        00:00:00 httpd
> 140 S    99 21514  5198  0  60   0    -  1358 posix_ ?        00:00:00 httpd
> 140 S    99 21515  5198  0  60   0    -  1358 posix_ ?        00:00:00 httpd
> 140 S    99 21516  5198  0  60   0    -  1358 posix_ ?        00:00:00 httpd
> 140 S    99 21517  5198  0  60   0    -  1358 posix_ ?        00:00:00 httpd
> 140 S    99 21518  5198  0  60   0    -  1358 posix_ ?        00:00:00 httpd
> 140 S    99 21519  5198  0  60   0    -  1358 posix_ ?        00:00:00 httpd
> 140 S    99 21520  5198  0  60   0    -  1358 posix_ ?        00:00:00 httpd
> 140 S    99 21521  5198  0  60   0    -  1358 posix_ ?        00:00:00 httpd
> 
> Thanks for your help on this.
> 
> John
> 
> > -----Original Message-----
> > From: Chad S. Lauritsen [SMTP:csl at plconline.com]
> > Sent: Thursday, December 07, 2000 10:41 AM
> > To:   olug at bstc.net
> > Subject:      Re: [olug] Spawning processes
> >
> > that depends on what the processes are.
> >
> > Things get spawned by cron from time to time. Other things get spawned
> > by init at bootup. many of the things started by init are respawned by
> > init if they should die. check the following things:
> >
> >  /etc/inittab -- the config file for init. everything traces back to
> > here
> >  su to root and do a 'crontab -l' to see what things are being run by
> > root
> >  check your own crontab with 'crontab -l'
> >  check /etc/crontab
> >  check user crontab files in /var/spool/cron
> >
> >
> >
> > "Williams, John W." wrote:
> > >
> > > I have a couple questions I was hoping someone may be able to answer for
> > me.
> > > I am running Redhat 6.2 and am curious if it is common for my processes
> > to
> > > be spawning themselves?  What causes this?  Is there an easy solution to
> > > killing the spawned processes without having to actually suspend and
> > kill
> > > them individually?  Thanks for any help on this.
> > >
> > > John Williams
> > >
> > > ---------------------------------------------------------------------
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> >
> > --
> > Chad Lauritsen                          | 1000 N 2nd Ave
> > System Administrator                    | Logan, IA 51546
> > Perfection Learning Corporation         | 712-644-2831 Ext 223
> >
> > The half wit does not know that gold  Makes apes of many men:
> > One is rich, one is poor,  There is no blame in that. --The Hávamál
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: olug-unsubscribe at bstc.net
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> >
> 
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-- 
Chad Lauritsen                          | 1000 N 2nd Ave
System Administrator                    | Logan, IA 51546
Perfection Learning Corporation         | 712-644-2831 Ext 223

The half wit does not know that gold  Makes apes of many men:
One is rich, one is poor,  There is no blame in that. --The Hávamál

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