sleepy monitor??

[Dan Lund]

Very nice breakdown of runlevels.  Further analysis can be done in
your /etc/inittab.

On 11/4/06, Mark Jarvis <mark.jarvis at pvmail.maricopa.edu> wrote:
>
>  All *nix systems have six run levels.  Red Hat uses:
>      0    Shut down all services and halt.
>      1    Single-user mode.  Only the console is
>           enabled.  The console user is
>           automatically logged in as root.  No other
>           connections are permitted.
>      2    Multi-user without networking. Rarely used.
>      3    Standard multi-user text mode operation.
>      4    Not used.
>      5    Standard multi-user operation with
>          graphical login.
>      6    Shut down all services and reboot.
>  Note:  Different Linux Distros switch run levels 3, 4, & 5 around.
>
>  -mj-
>  Eric "Shubes" wrote:
>
> Run levels 2 and 3 vary by distro in their interpretation.
>
> I'm not positive, but I think that RH based distros might consider 3 to be
> undefined (as is 4). What is considered as multi-user on RH is 2, while on
> debian it's 3. Or something like that.
>
> Can someone please explain in an understandable way what's what on which?
>
> keith smith wrote:
>
>
> I would have thought so too.  They were not set to run on runlevel 3.
>
>
> */Craig White <craigwhite at azapple.com>/* wrote:
>
>     httpd/mysqld/smb should all run whether runlevel 3 or 5
>
>     You aren't likely to see that much of a difference between the two
>     runlevels until someone logs in - at which point, on runlevel 5, a whole
>     lot more processes are started.
>
>     until then, the major difference between the two will be found
>
>     ps aux|grep gdm
>
>     just to be sure though, I confirm...
>
>     chkconfig --list [service]
>
>     chkconfig --levels 2345 httpd on
>     chkconfig --levels 2345 mysqld on
>     chkconfig --levels 2345 smb on
>
>     Craig
>
>     On Sat, 2006-11-04 at 07:25 -0800, keith smith wrote:
>     > After adding:
>     >
>     > [root at dev bin]# /sbin/chkconfig --level 3 httpd on
>     > [root at dev bin]# /sbin/chkconfig --level 3 mysqld on
>     > [root at dev bin]# /sbin/chkconfig --level 3 smb on
>     > [root at dev bin]# /sbin/chkconfig --level 3 yum on
>     >
>     > - - - - - - - -
>     > [root at dev bin]# free
>     > total used free shared buffers
>     > cached
>     > Mem: 385772 311396 74376 0 71832
>     > 177692
>     > -/+ buffers/cache: 61872 323900
>     > Swap: 666688 88 666600
>     >
>     > Not a real big diff.
>     >
>     > RunLevel 5 : 312956
>     > RunLevel 3 : 311396
>     >
>     > It does seem more responsive......
>     >
>     > Keith
>     >
>     >
>     >
>     > "Eric \"Shubes\"" wrote:
>     > keith smith wrote:
>     > > When I execute runlevel it returns "3 5" - could it be
>     > possible I'm
>     > > running both?
>     >
>     > man runlevel
>     >
>     > > free:
>     > > total used free shared buffers cached
>     > > Mem: 385772 312696 73076 0 70856 176448
>     > > -/+ buffers/cache: 65392 320380
>     > > Swap: 666688 88 666600
>     > >
>     > > - - - - -
>     > > [root at dev bin]# /sbin/telinit 3
>     > > [root at dev bin]# free
>     > >
>     > > total used free shared buffers cached
>     > > Mem: 385772 298428 87344 0 70896 175780
>     > > -/+ buffers/cache: 51752 334020
>     > > Swap: 666688 88 666600
>     > >
>     > > [root at dev bin]# /sbin/runlevel
>     > > 5 3
>     > >
>     > > ------
>     > >
>     > > [root at dev bin]# /sbin/telinit 5
>     > > [root at dev bin]# /sbin/runlevel
>     > > 3 5
>     > > [root at dev bin]# free
>     > > total used free shared buffers cached
>     > > Mem: 385772 312956 72816 0 71024 176468
>     > > -/+ buffers/cache: 65464 320308
>     > > Swap: 666688 88 666600
>     > > [root at dev bin]#
>     > >
>     > > - - - - - - - -
>     > >
>     > > Looks like only 14M diff.
>     > >
>     > > runlevel 3 kills samba, mysql and httpd also. I would think
>     > that would
>     > > be worth a little also.
>     > >
>     > > - - - - - - -
>     > >
>     > > I would be interested in changing runlevel 3 to start samba,
>     > mysql, and
>     > > httpd. These are the ones I use all day.
>     >
>     > If you're running a RH-based distro, you can use the chkconfig
>     > command to
>     > change this, e.g.:
>     > # chkconfig --level 235 samba on
>     >
>     > man chkconfig
>     >
>     > I'm not sure how to do this on debian boxen.
>     >
>     > > This has been most informative and interesting!
>     > >
>     > > Thnaks for your help,
>     > > Keith
>     > >
>     > >
>
>
>
>
>


-- 
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