>
> On 2008-03-12 at 15:46 +0100, Alexander Nagel wrote:
> > My problem is that i have quite a big number of exim4 process with
> > state ZOMBIE during mail delivery. Sometimes for any reason i dont
> > know it happens that the ZOMBIE processes are not getting killed and
> > they are getting more and more until NAGIOS is alerting.
>
> A zombie process is already dead. The only state which still exists is
> an entry in the process table (and some other kernel house-keeping
> structures) which records the state of the process, etc. A zombie
> process is, simply, a dead process which the parent hasn't reaped.
>
> There is one way, and only one way, for a zombie process to go away: its
> parent process reaps it. However, if you kill the parent process then
> the zombie, like all that process's children, gets re-parented to be a
> child of init (pid 1) which always reaps all its children. Thus, the
> parent process reaps it (but it's a different parent).
>
> Exim's model is to have a process handle each delivery, so if that
> process has zombie children then the parent is stuck waiting on
> something else. In your case, the spamc process is typically running.
> When the spamc process exits, Exim cleans up.
>
> The existence of the zombie processes is not your problem. The presence
> of other processes which are hanging and which Exim is waiting on is a
> possible problem and the zombie processes are a symptom of that, a
> side-effect.
I know what zombie processes are, but the problem is that the zombies are
not getting killed by init (pid 1). They are still there and i can kill them only with -9
I always try -15 to prevent data loss ;-)
>
> There is no need to kill the exim processes with -9 (SIGKILL), since
> then Exim doesn't have a chance to clean up after itself and you
> potentially risk leaving corrupted DB files around. If you really have
> to kill Exim, is it really true that SIGTERM (-15, the default) doesn't
> work for you?
>
> > Debian- 16817 0.0 0.0 3264 768 ? S 15:27 0:00 \_ /usr/bin/spamc -t 10 -u XXXXXXXXXX
>
> spamc should be timing out after 10 seconds (-t 10). If it's not then
> there's the problem. Figure out why spamassassin is hanging.
I check that.
Thx for your answer
Alex
>
> -Phil
>
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