[Bug 257314] FBSD 13 crash after some KDE parts crash supposing out of swap space

From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 24 Jul 2021 00:55:01 UTC

--- Comment #26 from Mark Millard <marklmi26-fbsd@yahoo.com> ---
(In reply to Michael from comment #12)

I'll note that when the kernel kills a process, that process
might leave behind a *.core file as a consequence. But it is
not the *.core that caused the kill, it was the kill that lead
to the *.core : things were bad at the system level before the
*.core happened.

For a:

kernel: pid ??? (???), jid ???, uid ??, was killed: out of swap space

the *.core produced (if any) is likely not the thing of direct
interest for evidence about the overall system level status that
lead to the kill.

The kill sequence goes after bigger processes first, working
toward smaller processes later (not that the process sizes are
static during this). So the sequence:

chrome, gimp-2.10, chrome, chrome, plasmashell, chrome, chrome,

in the Description is suggestive of the relative sizes of the
processes around the time of each kill. That the chrome
subsequence had pids of (in order) 1551, 1546, 1574, 1548,
1786 shows that the (roughly decreasing?) size was not in the
order oldest (1546) to newest (1786).

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