Comment by mst

I think some stuff will be happier in the "director" process and some happier in its own "worker" process - and fd passing is the magic trick that lets you accept() in the former and still do the bulk of the work in an appropriate instance of the latter.

I 100% get the 'overhead' part - but at some point hopefully you'll have enough other stuff already running that the 'fun' factor of enabling that will win out :D