[Bug 280846] Low memory freezes / OOM: a thread waited too long to allocate a page

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 23 Oct 2024 17:07:34 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280846

--- Comment #58 from Mark Johnston <markj@FreeBSD.org> ---
(In reply to Mark Millard from comment #57)
This is deliberate, more or less.  The vm.domain.* sysctls provide a detailed
breakdown of memory usage and are relatively new (added when NUMA support was
added to FreeBSD).  The vm.stat.* sysctls are much older and much more commonly
used as a data source for memory usage summaries.  For the latter, I think a
hack to hide the implementation detail of PQ_UNSWAPPABLE is ok.  In the longer
term I'd like to come up with a better solution for the problem that
PQ_UNSWAPPABLE solves, as it itself is a hack IMO.

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