Re: zombies

[Oswald Buddenhagen <ob6@inf.tu-dresden.de>]

> > > Today I noticed the following:
> > > 
> > > 15444  ?  Z    0:00 (cron <zombie>)
> > > 
> > > Under which circumstances does a process turn into a zombie? I assume
> > > this applies to UNIX in general.
> > 
> > zombies are what is left from child processes when the parents thereof
> > do not wait() for them, but exit() instead.
> >
> that's wrong ...
> if the parent process would exit, then it's children would be inherited by
> init, which would make a wait() upon the sigchld it will receive, when the
> child exits.
> long-time zombies typically indicate a locked up parent process.
> 
btw: for cron this is normal. it does not collect it's zombies very often.

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