Slow shutdown in dependency-based boot system

Petter Reinholdtsen pere at
Tue Jul 15 08:46:47 UTC 2008

[Sven Joachim]
> Ten days ago I installed the insserv package and enabled dependency
> based booting.  While this works quite well, the shutdown of the system
> has slowed down noticeably, the main reason being that sendsigs now takes
> six seconds to terminate the remaining processes while it previously
> finished in one or two seconds.

Hm.  Can you add a call to 'ps -ef' in sendsigs, to report what
processes are being killed?  I see nothing obviously wrong with the
shutdown sequence.  Are you using network file systems?  Perhaps
wpa-ifupdown need to run next to networking and ifupdown, and register
its pid to the list of pids to survive sendsigs?  I talk about this
part of the sequence:

> | K04wpa-ifupdown
> | K05sendsigs
> |
> | K07nfs-common
> | K08portmap
> | K09networking
> | K10ifupdown

I do not know what the wpa-ifupdown script is doing, so I have no
better advice.

> Any idea who could be the culprit?  I see that K10ifupdown and
> K12mountoverflowtmp are new, while K07nfs-common and
> had been run before sendsigs in the old system.

I doubt the K12mountoverflowtmp script is the culprit.  nfs-common
might be related, but it seem unlikely.  ifupdown might be related,
but it seem likely as it only clean up /etc/network/run/ifstate.

Happy hacking,
Petter Reinholdtsen

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