[ic] PIDcheck vs. ChildLife
Jon Jensen
jon at endpoint.com
Wed Dec 13 15:18:54 EST 2006
On Wed, 13 Dec 2006, Grant wrote:
> What is the difference between PIDcheck and ChildLife? It sounds like
> they do the same thing, unless a PID and child aren't the same thing.
>
> Will setting one or both of these directives interrupt a job's
> execution?
PIDcheck says that the housekeeping routine should look for out-of-control
or dead Interchange child processes and kill them if they've been running
more than that many seconds:
http://www.icdevgroup.org/docs/confs/PIDcheck.html
ChildLife limits how long a child is allowed to live, primarily for
PreFork mode persistent children. For example, you may want to say that a
child can only live for 10 minutes total, regardless of whether it's met
its MaxRequestsPerChild limit yet:
http://www.icdevgroup.org/docs/confs/ChildLife.html
Most likely you do not need ChildLife, but you should almost always have
PIDcheck set to a couple of minutes, so you don't have runaway child
processes going longer than that.
Jon
--
Jon Jensen
End Point Corporation
http://www.endpoint.com/
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