Re: FYI; 14.3: A discord report of Wired Memory growing to 17 GiBytes over something like 60 days; ARC shrinks to, say, 1942 MiBytes

On Mon, 11 Aug 2025 13:18:47 -0700
Mark Millard <marklmi@yahoo.com> wrote:

> Context reported by notafet :
> 
> 14.3-RELEASE-p2 GENERIC on amd64 with ZFS in use
> 
> RAM:  looks to be 24 GiBytes, not explicitly mentioned
> SWAP: 8192 MiBytes
> (From using the image of top's figures.)
> 
> Wired:       17 GiBytes 
> ARC Total: 1942 MiBytes
> 
> SWAP used: 1102 MiBytes
> 
> The link to the storage channel's message is:
> 
> https://discord.com/channels/727023752348434432/757305697527398481/1404367777904463914

As of a couple of weeks ago update to latest -CURRENT at the time
(from previous build of a couple of months ago) I've been experiencing a
similar but worse case of this. 64G ram on the machine, given 2 days it
will run out of memory and start killing off process, with Wired Memory
growing the whole time (at the rate of about 1G every 5s at some
points). ZFS ARC never passes more then 20G the whole time. 

For example right now top reports:

Mem: 1031M Active, 14G Inact, 241M Laundry, 45G Wired, 404M Buf, 2157M
Free ARC: 17G Total, 2883M MFU, 11G MRU, 256K Anon, 167M Header, 3025M

(Time for another reboot or it'll have killed things off when I get
home from work in 8 hours)

I'm still trying to pin down what exactly it's related too hence. I've
pretty much elimiated ZFS being the issue and a large poudriere ports
build or a full build world doesn't seem to push it up. It seems to be
more closely related to how many graphical things are open at once.
I've tried drm-61-kmod and drm-66-kmod for my amdgpu polaris 10 video
card but that seems to make no difference. Next thing I was planning on
trying was switch to the vesa driver and see if that reduces things,
but these things take time to fit in around everything else.

Darrin