[ic] PreForkSingleFork?

[Grant]

> >> 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.
> >
> > 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?
>
> You'll see a status of Z and something like '[interchange] <defunct>' as
> the command in top. But, I'll tell you now, there's almost no worry of
> that happening.

IC stopped responding after 15 minutes with PreForkSingleFork enabled.
 I didn't see that they were zombies.  I'm going to try again.

- Grant