From: "Ted Unangst" Subject: Re: Use a FIFO for the reaper To: "Martin Pieuchot" Cc: tech@openbsd.org Date: Thu, 15 May 2025 14:06:39 -0400 On 2025-05-14, Martin Pieuchot wrote: > Instead of adding dead threads at the head of the deadproc list insert > them at the tail. > > This improve latency and reduce variance when building with 24 CPUs. Any theories why? I would think, if it mattered, a LIFO would be more cache friendly.