bug#33018: 26.1.50; thread starvation with async processes and accept-process-output

[Eli Zaretskii]

> From: "Basil L. Contovounesios" <contovob@tcd.ie>
> Cc: <33018@debbugs.gnu.org>
> Date: Sun, 14 Oct 2018 16:00:56 +0100
> 
> > When the hang happens, is there any wget process still alive, or did
> > they all exit?  Please use OS tools to find that out, don't rely on
> > what Emacs thinks.
> 
> When the hang happens, the wget process launched by the waiting thread
> is still alive but asleep (idle), as reported by ps and top.

Any idea why is that?

And if this is the situation, doesn't it explain why
accept-process-output times out?