> > Can anyone tell me what PreForkSingleFork does? The docs don't > > explain it and I can't follow the code. > > Standard PreFork uses the typical double-fork method in UNIX for > generating daemons so as to avoid zombies (or more specifically needing > to deal with them). However, forking IC daemons is relatively expensive. > > For most (if not all) sane, modern Unixen, you can avoid the relative > expense of double forking by setting SIGCHLD to IGNORE in the master, > which accomplishes roughly the same goal. It states, essentially, that > the parent is not interested in the result of the child's process, so > don't zombify my kids waiting for me to check on them. > > If you're running PreFork, you should always try PreForkSingleFork too > to start. Only turn off PreForkSingleFork if something pathological > happens (the most likely outcome being a slew of zombies piling up that > are never reaped). Using it successfully creates the absolute minimal > number of forks necessary. > > Mark Thanks Mark. I've enabled it with: PreForkSingleFork Yes So I should watch the process list for extra interchange processes? How can I tell if they're zombies? - Grant _______________________________________________ interchange-users mailing list suppressed http://www.icdevgroup.org/mailman/listinfo/interchange-users
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