Your project is fundamentally about instantiating processes?
Yes, that and spawning other subprocesses depending on the outcome of the previous one, sometimes concurrently per-host but mostly sequentially, and clearly most of the time will be spent waiting for suprocesses because all my commands.
Then any overhead you'd see from threading rather than asyncio is going to be completely lost in the noise.
Absolutely, and if I were to use this to orchestrate a bunch of subprocess on thousands of servers, it'd probably happen on a blade with hundreds of gigs of RAM anyway and many cores, so I don't think hardware is really going to be a problem here.
That said, I'm also considering a rewrite of my asyncio code in gevent with stdlib patching, I was already happy with eventlet back when doing OpenStack code, and gevent seems even better, might be the opportunity to get the best of both worlds.
Sorry I think this discussion got out of the scope of this list, I'll be back with more thoughts on python-list in a few weeks after I gather() more insight
Have a great weekend ;)