Profiling Processes while shutdown Post: 302982145

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Operating Systems Linux Debian Profiling Processes while shutdown Post 302982145 by jim mcnamara on Sunday 25th of September 2016 07:44:50 AM

09-25-2016

Registered User

I think you have to work "backwards".
Change startup to be more minimal, do not start any your own daemons.

If the problem goes away, keep adding them back into the mix one by one. If it is resource contention, like waiting on some kind of lock, it may be hard to track down. Any daemons that work cooperatively with others may deserve first attention.

If the problem still exists, you may have to start looking at your configuration by changing to single user boot, then changing startup/shutdown script to boot and shutdown at each runlevel to eliminate process groups and processes as a problem.

I vote for your hand-rolled daemons as a great place to start. Sorry I cannot be more specific.

jim mcnamara

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LEARN ABOUT LINUX

startup

startup(7)						 Miscellaneous Information Manual						startup(7)

NAME

       startup - event signalling system startup

SYNOPSIS

       startup [ENV]...

DESCRIPTION

       The  startup event is generated by the Upstart init(8) daemon after it has completed its own initialisation and is the signal that the rest
       of the system may be started.

       Typically this will involve checking and mounting the partitions and drives that form the filesystem, loading drivers for connected devices
       and starting the X windowing system or other login environment.

       In the default Upstart configuration, the primary task run on the startup event is the /etc/init/rc-sysinit.conf job responsible for gener-
       ating the System V compatible runlevel(7) event.  See that page for a more detailed explanation of this process.

       Paradoxically there is currently no corresponding Upstart-native event signifying that the system is to be shutdown, only the System V com-
       patible runlevel 0 and runlevel 6 events provide this functionality.

EXAMPLE

       A service with no other dependencies run on startup might use:

	      start on startup

SEE ALSO

       runlevel(7) init(8)

Upstart 							    2009-07-09								startup(7)