[Bug 256507] Apparent kernel memory leak in 12-STABLE r368820

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 10 Jun 2021 06:15:07 UTC

--- Comment #1 from Andriy Gapon <avg@FreeBSD.org> ---
Just want to note that I noticed a very similar problem with stable/13.
So far I haven't been able to find any clues.
In the original report the number of unaccounted pages seem to grow smoothly
and linearly.  In my case I see it growing in steps.  That is, the number would
stay pretty constant (with some jitter) and then would jump over a short period
of time.

I see some correlation between the jumps and certain activity, but I cannot
pinpoint what exactly causes it.

Some possibilities:
- the activity involves some db style updates via mmap
- the activity involves "spawning" of processes
- the activity involves a daemon built on Mono / .NET

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