On Tue, May 09, 2006 at 12:48:59AM +0200, Erich Schubert wrote: > IIRC one of the big benefits of having pid 1 do the monitoring is that > pid 1 will also receive SIGCHLD for "detached" processes. Like apache. > So when apache terminates, pid 1 will immedeately know, whereas a > separate monitoring process has to poll.
For the record, both apache 1.x and apache 2.x can be persuaded not to detach. And there is fghack (daemontools) for daemons which are incorrigible.
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