disable ldconfig at boot?

rgiggs · 06-30-2004, 12:12 AM

hi,
is it necessary to run ldconfig at boot? i only had to run that a few times while building linux from scratch.
how can i prevent slack from running ldconfig at boot?
thanks.

carboncopy · 06-30-2004, 12:24 AM

man ldconfig

Code:

DESCRIPTION
       ldconfig creates the necessary links and cache to the most
       recent shared libraries found in the directories specified
       on  the  command line, in the file /etc/ld.so.conf, and in
       the trusted directories (/lib and /usr/lib).  The cache is
       used by the run-time linker, ld.so or ld-linux.so.  ldcon_
       fig checks the header and file names of the  libraries  it
       encounters  when  determining  which  versions should have
       their links updated.

Speculate: If you do not run ldconfig at boot time, I would think that the dynamicly link (compiled) program would not run (correctly).

However if you insist to disable it at boot time:

cd /etc/rc.d
emacs rc.M

and comment out

Code:

# Update all the shared library links:
if [ -x /sbin/ldconfig ]; then
  echo "Updating shared library links:  /sbin/ldconfig"
  /sbin/ldconfig
fi

save it (ctrlxs)
exit (ctrlxc)

rgiggs · 06-30-2004, 02:17 AM

hi,
i disable ldconfig at boot by commenting out the lines. so far so good.
thanks.

rotvogel · 06-30-2004, 02:33 AM

You can disable ildconfig at boot, the only thing you will have to remember is to run ldconfig after installing or uninstalling software which provides shared libraries. It isn't always necessary but it doesn't harm running ldconfig when it's not needed.

priller · 06-30-2004, 04:54 AM

I disabled ldconfig at boot without a problem, saved about 10 seconds on boot time.

equinox · 06-30-2004, 05:04 AM

u can do it via pkgtool, just go through ur setup scripts and disable it there :^)

320mb · 06-30-2004, 09:54 AM

Quote:

Originally posted by priller
I disabled ldconfig at boot without a problem, saved about 10 seconds on boot time.

LMAO, are you trying to set a world record on boot time..........

maybe we can make boot time a New Olympic event.........

rgiggs · 06-30-2004, 02:14 PM

hi,
reducing boot time is the only reason i want to disable ldconfig at boot. i also want to disable hotplug at boot, maybe saving another 10 seconds

. making /etc/rc.d/rc.hotplug non-executable is not as flexible as passing "nohotplug" to kernel, but for some reason, the "nohotplug" way fails and i still don't know how to fix it. see if you can help me here: http://www.linuxquestions.org/questi...readid=199149.
thanks.

priller · 07-01-2004, 03:47 AM

Quote:

Originally posted by 320mb
LMAO, are you trying to set a world record on boot time..........

maybe we can make boot time a New Olympic event.........

I'm just fed up of waiting 1 minute for the computer to boot.

snop · 07-01-2004, 05:19 AM

I posted about speeding up boot some time ago: http://www.linuxquestions.org/questi...ight=boot+snop

I indeed disabled hotplug as well as ldconfig but I put ldconfig at rc.0. This way the shutdown processes is slower but I don't care because I just leave my computer alone to do this job

It makes a huge difference disabling ldconfig + hotplug at boot up (and I still don't get what exactly hotplug does, my usb mass storage are detected without hotplug).

There's no need to set any "olympic record" but saving 15-20 secs. it's important if you use your computer as a desktop one.

Bye

SnOp

PD: my computer boots on about 40 secs until reaching xfce .

coffeedrinker · 07-01-2004, 09:46 AM

I also have disabled ldconfig at boot - doesn't produce problems and I run it after I install new software.

While you're at it you may want to disable fc-cache as well, since you probably aren't adding a lot of fonts every day.

Why save time on the boot? I use Slackware on my laptop and am turning it on and off and moving around with it frequently. So each boot is worth saving some time on.

rgiggs · 07-01-2004, 01:25 PM

Quote:

Originally posted by coffeedrinker
While you're at it you may want to disable fc-cache as well, since you probably aren't adding a lot of fonts every day.

i was gonna get to that, too. i haven't because fc-cache doesn't take as long as it used to (total boot time now is about 15 seconds with fc-cache). but in case it starts to slow again, how do i disable it?

Quote:

Why save time on the boot? I use Slackware on my laptop and am turning it on and off and moving around with it frequently. So each boot is worth saving some time on.

yeah. and i'm waiting for kexec to stablize to give it a try. it's supposed to make it possible to skip reboot altogether.
thanks.

equinox · 07-01-2004, 02:15 PM

u people amaze me, i gave u the correct option, instead of chmodding files and screwing around just run

Code:

pkgtool

as root

then choose the option to go through ur setup scripts, and u can choose to disable all those things at bootime lol

get it?

rgiggs · 07-01-2004, 02:50 PM

Quote:

Originally posted by equinox
u people amaze me, i gave u the correct option, instead of chmodding files and screwing around just run

Code:

pkgtool

i guess that's a more obvious way to do it, but that doesn't mean the other ways are wrong. in fact, i left mdk for slk because i wanted to force myself to skip the gui's and learn what really happens, at least once.

equinox · 07-01-2004, 08:48 PM

Quote:

i guess that's a more obvious way to do it, but that doesn't mean the other ways are wrong. in fact, i left mdk for slk because i wanted to force myself to skip the gui's and learn what really happens, at least once.

gentoo?