Felipe Sateler <firstname.lastname@example.org> writes: > Petter Reinholdtsen wrote: > >> >> Did you ever curse that Debian took so long to shut down, waiting for >> all the shutdown scripts to complete before the machine was ready to >> move? Here is a simple recipe to help making sure your package do not >> slow down the shutdown. >> >> Most of the init.d scripts are simple scripts that during shutdown >> kill the process they started during boot. But the default halt >> (0) and reboot (6) shutdown sequences will kill all processes on >> their own (in the sendsigs script), so there is normally no need >> for individual packages and init.d scripts to run at shutdown if >> all they need to do is to kill a daemon. There might be >> exceptions, for example if the daemons need to stop in a given >> order, but that do not seem to be the case for most packages. > > Are the five seconds that sendsigs waits between TERM and KILL > enough to cleanly shutdown *all* running services at the same time? On a heavily loaded or slow system, I suspect it would be highly likely some would get SIGKILL before they could shut down properly. I can't say I'm a big fan of the proposal for this reason. With a better init, like upstart, or a dependency-based init, there's no reason why scripts can't be run in parallel. But, simply sending everything a TERM and KILL doesn't seem do be very clean in my understanding. Regards, Roger -- .''`. Roger Leigh : :' : Debian GNU/Linux http://people.debian.org/~rleigh/ `. `' Printing on GNU/Linux? http://gutenprint.sourceforge.net/ `- GPG Public Key: 0x25BFB848 Please GPG sign your mail.
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