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Date:      Wed, 16 Jan 2019 21:48:18 +0100
From:      ASV <asv@inhio.net>
To:        Luciano Mannucci <luciano@vespaperitivo.it>, freebsd-questions@freebsd.org
Subject:   Re: ZFS devouring RAM in less than 2 days on FBSD 11.2
Message-ID:  <0e45aca3145587de3b6d0b46a35ef2e7adea37b4.camel@inhio.net>
In-Reply-To: <43fHM11f4dz1ftYp@baobab.bilink.it>
References:  <84a3d2e071d6651e7e15afccdf29b9e0970fb056.camel@inhio.net> <43fHM11f4dz1ftYp@baobab.bilink.it>

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Thanks for the reply.
That's interesting. No I don't think either that the patch version
makes any difference at all.

So you have only 1 GB set to arc_max?
How many filesystems do you have in the pool (or per pool)?


On Tue, 2019-01-15 at 18:26 +0100, Luciano Mannucci wrote:
> On Tue, 15 Jan 2019 17:38:36 +0100
> ASV <asv@inhio.net> wrote:
>=20
> > my old server has 16GB of RAM and after less than 2 days 14GB are
> > already wired. It seems to me that ZFS ignores completely the
> > 'arc_max'
> > parameter.
> >=20
> > Anybody is experiencing the same?
>=20
> No. After lowering the zfs.arc everything appears fine. Here are my
> parameters:
>=20
> vfs.zfs.arc_min: 536870912
> vfs.zfs.arc_max: 1073741824
>=20
> root@hermes:~ # uptime
>  6:22PM  up 6 days,  3:51, 2 users, load averages: 0.10, 0.12, 0.11
> root@hermes:~ # top
> Mem: 108M Active, 9934M Inact, 7570M Wired, 1565M Buf, 14G Free
> ARC: 2214M Total, 838M MFU, 1099M MRU, 32K Anon, 6073K Header, 272M
> Other
>      873M Compressed, 1064M Uncompressed, 1.22:1 Ratio
> Swap: 8192M Total, 8192M Free
>=20
> My version is still 11.2-RELEASE-p7. I don't think it makes a big
> difference...
>=20
> Luciano.

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