> Date: Sat, 3 May 2025 14:06:45 +0200
> From: Claudio Jeker <claudio@openbsd.org>
> 
> On Sat, May 03, 2025 at 02:08:35AM -0400, Ted Unangst wrote:
> > On 2025-05-03, Claudio Jeker wrote:
> > 
> > > I mentioned this to mpi@, his diff does not free threads until
> > > the process exits and runs out of proc on any workload that uses
> > > many threads.  This just does not work, his diff is over
> > > agressive by removing the reaper even for that one case..
> > 
> > I think that chunk can be pulled up a little in exit1, so that when one
> > thread exits, it will delete any dead siblings. Need a P_ZOMBIE, or a
> > pr_deadproc list. This seems like an old idea? Did I forgot why we
> > rejected it?
> 
> I do not understand why we can't keep the reaper just for this. The work
> needed for releasing struct proc and its uarea is minimal. Why delay it
> until the next thread exits?
> 
> There is no need to remove the reaper but we need to move the heavy uvm
> teardown out of it.

Right.  I think the process should be to move stuff step by step.  If
at some point we have little left in the reaper we can think consider
if there is a better way to handle those bits.