[Bug 280671] Memory leak on FreeBSD 13.3 and 14.1

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280671

--- Comment #5 from sre@truespeed.com ---
Hi Mark

Thanks for looking into this issue! I'll try and provide all the detail I can.

Today is the 3rd day the Server's been running so it was likely to run into
that state, and it has!

I've captured the requested stats in two scenarios:
- At the point of "minimum" available memory (just prior to when I would expect
it to start thrashing)
- After I've killed most of the running processes and jails (to see what's
still hogging it)

sysctl_vmstats_thrashing.txt and vmstat_thrashing.txt show the stats before I
intervene. stopped_sysctl_vmstats_thrashing.txt and
stopped_vmstat_thrashing.txt show the stats after I've killed most of the
running processes.

I've attached two more charts showing the last 12 hours before intervention for
Total Memory and Memory Types.

To answer your question about Memory loss, we "lost" 1.5GB of Total Memory over
a ~9 hour period before I intervened and rebooted the box. (93.6GB usually, and
slowly dropped to 92.1GB) The total memory didn't return to usual after I
killed processes, only after a reboot, and looking at the charts it reduced
further after I killed processes.

This was the top memory profile after I killed everything.
Mem: 1691M Active, 859M Inact, 64G Laundry, 4495M Wired, 22G Free
ARC: 2470M Total, 1530M MFU, 720M MRU, 7936K Anon, 20M Header, 192M Other
     2021M Compressed, 5712M Uncompressed, 2.83:1 Ratio

Thanks again, if there's anything else I can provide please let me know.

SRE

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